University of Tehran
Journal of Range and Watershed Managment
5044-2008
2423-7795
70
4
2017
12
22
Simulation of spatio-temporal pattern of Land use changes (emphasis on area under orchard) using Satellite Image and Integrating Marcov Chain Analyse and Geomod Model: A case study: Sofi Chai Basin of Maragheh
822
835
FA
Soghra
Andaryani
0000-0002-3806-7513
PhD student in Environmental Management, Faculty of Planning and Environmental Sciences, University of Tabriz, Iran
s.andaryani@gmail.com
Mohammad Hosein
Rezaei Moghadam
0000-0003-2626-4656
Professor, Faculty of Planning and Environmental Sciences, University of Tabriz, Iran
rezmogh@yahoo.com
khalil
Valizadeh Kamran
Associate Professor, Faculty of Planning and Environmental Sciences, University of Tabriz, Iran
valizadeh@tabrizu.ac.ir
Farhad
Almaspour
Regional Water Authority of East Azarbaijan, Iran
farhadalmaspour@gmail.com
10.22059/jrwm.2017.137059.937
Forecasting models of Land Use/ Cover changes are the main resources for managers and policy-makers in order to develop a sustainable land management plan. Changes of Orchard-lands have an effect on water resources as well as soil permeability. Thus simulation of this land use changes, in areas where there is a shortage of water resources, can provide more information about the occurred changes during a specified time scales along current management. The present study was carried out to simulate and predict the spatial-temporal changes of the orchard by 2026. For this purpose, Geomod method was used to simulate spatial changes of the orchard. Due to the lack of ability of this model in temporal simulation, Markov chain analysis method was used to solve the mentioned problem with the error proportional of 0.012. Orchard was extracted using Landsat 5, 7, and 8 satellite data after necessary corrections as well as SVM in 1987, 2000, and 2013. Then, to understand the impact of each of the criteria used to change this type of land use, instead of Delphi methods, logistic regression, Fuzzy standardization and, after all, WLC were used. The ROC index was used to validate the model. The results showed, this model has a good performance to simulate spatial changes because of area under Curve 0.91 for both of the 2000 and 2013. In the 26-years period, there are 294 hectares of orchard development, and the hybrid model showed that this land use will increase to 304 hectares till 2026
Support vector Machine,Logistic regression,Weighted Linear Combination,Sofi Chai Basin
https://jrwm.ut.ac.ir/article_65319.html
https://jrwm.ut.ac.ir/article_65319_fbfa1ab5b21cc0d2480522bfbdcdced7.pdf
University of Tehran
Journal of Range and Watershed Managment
5044-2008
2423-7795
70
4
2017
12
22
Investigate the vegetative properties and chemical composition of Ferula hausskenechtii
837
849
FA
Hossein
Azarnivand
university of tehran
ut@ut.ac.ir
Sedigh
MOhammadi
فارغ التحصیل کارشناسی ارشد مرتعداری، دانشکده منابع طبیعی، دانشگاه تهران، ایران.
Sadegh
Hossein niyaee
دانشجوی دکترای مرتعداری، دانشکده منابع طبیعی، دانشگاه تهران، ایران.
sadeghbijar71@yahoo.com
Pouyan
Dehghan
دانشجوی دکترای بیابان زدایی، دانشکده منابع طبیعی، دانشگاه تهران، ایران.
pouyandehghan@gmail.com
10.22059/jrwm.2017.201316.975
One of the best methods to prevent or reduce soil erosion, it is preserving and restoring vegetation. So knowledge about the characteristics of the vegetation, including ecological features as the first and most important biological tool for soil conservation is essential. Coma (Ferula hausskenechtii) Plant of Apiaceae family, which is abundant in the mountainous regions of Kurdistan. Regarding the importance this species to protect and prevent soil erosion that the proper species is to reform the mountainous rangelands. Therefore, Autecology studies is necessary. For this study, the main habitat of this species were determined by using vegetation maps with a scale of 1: 25,000 in Kurdistan province. Finally, five sites (Saral Divandarreh, Sarshiv Marivan, Buin-e Baneh, North West Dam Qshlagh, and Sarshiv Saqqez) were selected as sample. Then studies of vegetation, soil analysis, chemical analysis, root system and phenology of species was performed. The results showed that this species grows well at the altitude of 3000-1600 mask with 700-400 mm rainfall as well as its density decreases with increasing altitude. Its habitat soil has a neutral pH to slightly alkaline (7-8), is shallow or deep and medium texture. Vegetative growth starts of the first week of April and the plant is seeding in mid- June. This plant has multiple roots system, which average root length and the number of rootlet are 102 cm and 11 respectively. The highest amount of crude protein in the growth and the lowest is in seeding stage.
Autecology,Coma,chemical analysis,Phenology
https://jrwm.ut.ac.ir/article_65373.html
https://jrwm.ut.ac.ir/article_65373_7727777e68ccefb7ef0aae028a7f84ce.pdf
University of Tehran
Journal of Range and Watershed Managment
5044-2008
2423-7795
70
4
2017
12
22
Net primary production variations under the effect of topographic factors in mountain rangelands of Namin county
851
867
FA
Elnaz
Hassanzadeh Kuhsareh
null
Department of Range and Watershed management, Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil, Iran
lnaz.hassanzadeh@gmail.com
ardavan
ghorbani
0000-0001-7201-1225
mohaghegh ardabili university
ardavanica@yahoo.com
Mehdi
Moameri
Mohaghegh University
mmoameri@alumni.ut.ac.ir
kazem
hashemi majd
null
mohaghegh ardabili university
hashemimajd@yahoo.com
Ardeshir
pounemati
Gorgani university
a.pournemati@gmail.com
10.22059/jrwm.2018.244026.1176
The purpose of this study was to determine the effects of altitude, slope, aspect and topographic index on life forms and total net primary production (NPP) in mountains meadows in Fandoghlou in Namin county in Ardabil province. NPP in three altitude, slope, topographic index classes and four aspect classes was estimated using one m2 plots (totally 180 plots) by harvesting and weighting method. Correlation between life forms and total NPP with topographic factors were analyzed using stepwise multivariate regression method and using derived regression equations, the maps of NPP were derived. Results show that different topographic factors has significant effects on forbs (p<0.01) and grasses (p<0.01), however on total NPP have no significant effects. The highest NPP of forbs (1584/1 Kg/ha) and total NPP (2339/3 Kg/ha) were observed in the second altitude (1525-1564 m) but has no significant effect on grasses. The NPP of grasses show direct relationship with slope, however the NPP of forbs were decreased with the increase of slope and has no significant effect on total NPP. The highest amount of grasses (894/3 kg/ha) and forbs (1875/5 Kg/ha) were observed in the south and northwest aspect, respectively. According to the various classes of topographic index, the maximum amount of grasses (853/4 Kg/ha) were observed in the first classes and the highest NPP of forbs (1568/6 Kg/ha) on the third classes. The results of this study can be used to balance the amount of biomass, carbon, the supply and demand of and to plan for proper rangeland management.
NPP modeling,Biomass,life form,Ecological factors,Meadow rangeland,Fandoghlou region
https://jrwm.ut.ac.ir/article_65321.html
https://jrwm.ut.ac.ir/article_65321_67a0f47f3ed6679dc9b6ee839649c9a0.pdf
University of Tehran
Journal of Range and Watershed Managment
5044-2008
2423-7795
70
4
2017
12
22
Assessing the effectiveness of the analytic hierarchy process as a groundwater predicting tool (Case study: Ghorve-Dehgolan plain)
869
879
FA
Omid
Rahmati
lorestan university
omid_rahmati@ut.ac.ir
Aliakbar
Nazari Samani
0000-0001-6517-2013
Assistant Professor of University of Tehran, Faculty of Natural Resources
aknazari@ut.ac.ir
Mohammad
Mahdavi
Professor, University of Tehran
mahdavy@ut.ac.ir
10.22059/jrwm.2018.31578.569
Determination of groundwater potential in respect to increasing trend of water demand in Iran, is found to be an unavoidable and vital subject. The present research was aimed to assess the efficiency analytical hierarchical process (AHP) to identify potential groundwater zones. Initially, five parameters (viz., lithology, annual rainfall, drainage density, lineament density and land slope) were used in Ghorveh-Dehgalan plain. Influencing groundwater potential were selected. A questionnaire was prepared to collect ten experts attitudes to paired comparison of such parameters. The normalized weights of criteria/parameters were determined based on Saaty’s 9 point scale and its importance in specifying groundwater potential zones using analytical hierarchy process (AHP) and eigenvector method. To prepare lineament distribution maps, ETM+ Landsat images and PCI Geomatica were applied. Finally, the set of criteria were integrated by weighted linear combination method using ArcGIS 9.3 software to generate groundwater potential prediction map. The pumping test results collected and overlaid with groundwater potential prediction map. The validation of the groundwater potential prediction map was conducted based on frequency ratio and results of pumping 20 wells in study area. Results from comparing predicted potential of groundwater and by the groundwater specific capacity (SPC) showed 85% accuracy. It was established in the study that the AHP technique is promising of make accurate and reliable prediction, specifically in no-data aquifers.
Analytic Hierarchy Process,Groundwater,potential,specific capacity,Gorve-Dehgolan plain
https://jrwm.ut.ac.ir/article_65322.html
https://jrwm.ut.ac.ir/article_65322_c774e975ddb288035de590ab11ed0f25.pdf
University of Tehran
Journal of Range and Watershed Managment
5044-2008
2423-7795
70
4
2017
12
22
Assessing the efficiency of SWAT model for runoff simulation in Gamasiyab basin
881
893
FA
Shahab oddin
Zarezade Mehrizi
Ph.D. candidate in Watershed management, Hormozgan University
shahabazar13@gmail.com
Asadollah
Khoorani
Associate Professor of Geography Department, Hormozgan University
agroclimatologist@gmail.com
Javad
Bazrafshan
Associate Professor of Agricultural and Irrigation Department, University of Tehran
jbazr@ut.ac.ir
Ommolbanin
Bazrafshan
0000-0003-2524-3992
Assistant Professor of Agriculture Department, Hormozgan University
bazrafshan1361@gmail.com
10.22059/jrwm.2018.243898.1174
Gamasiab River is one of the five main branches of the Karkheh River and plays a basic role in preserving the life and ecosystem of the region. The first step in the adoption of proper and sustainable methods for managing the water resources of the Gamasiyab river is to gain continuous knowledge of the quantitative and qualitative status of the water as well as its variations. The use of hydrological models is common to simulate quantitative and qualitative processes associated with the water cycle. One of the models that is widely used in the international level is the SWAT model. In this research, we evaluated the efficiency of SWAT model in simulation of Gamasiyab river flow. For running this model requires a DEM, soil map, land use map and slope classification. Initially, discharge data in daily step at Polchehr Hydrometric Station was calibration (1977-1995 AD) and then validation (1996-2005 AD) by using precipitation data of two synoptic stations and three weather stations and minimum and maximum temperature of two synoptic stations. Statistical coefficients including Nash-Sutcliff coefficient, R2, P-factor and R-factor for calibration period were 0.71, 0.73, 0.79, 1.36 respectively and for validation period were 0.57, 0.61, 0.71 and 1.34 respectively. These results indicate that the SWAT model has the ability to simulate the Gamasiyab River discharge and researchers can use this model to apply management scenarios in short time and low cost for better decision making.
Hydrologic Model,Polcher,calibration,validation
https://jrwm.ut.ac.ir/article_65323.html
https://jrwm.ut.ac.ir/article_65323_5a1b0433de1fd041023ddcfa029fe11b.pdf
University of Tehran
Journal of Range and Watershed Managment
5044-2008
2423-7795
70
4
2017
12
22
Carbon and nitrogen allocation in aerial and underground organ of Artemisia austriaca Jacq. in different grazing intensities (Case study: Sabalan Darvishchae Rangelands)
895
908
FA
مهدی
معمری
دانشگاه محقق اردبیلی
mmoameri2005@gmail.com
Maryam
Asadi
دانشگاه محقق اردبیلی
maryamasadi392@gmail.com
کیومرث
سفیدی
دانشگاه محقق اردبیلی
kiomarssefidi@gmail.com
10.22059/jrwm.2017.222052.1075
In this research, was investigated the effect of grazing intensities on carbon and nitrogen allocation in aerial and belowground biomass of Artemisia austriaca in summer rangelands of Darvishchae (including Alvares, Aldeshin and Asbmarz villages) at southern slope of Sabalan. The study areas based on grazing rate, rangeland condition, previous researches and department of Natural Resources and field survey in three grazing intensity low, medium and heavy was selected. Sampled in each grazing intensity, from vegetation and soil with randomized-systematic method on 3 transects parallel with the length of 200 meters and plot 1×1 m2 was carried out at intervals of 50 meters. Biomass was determined using cut and weighting method. After digging profiles at the base of the plant, roots were harvested. Then, allocation in aerial and underground plant was determined. The comparisonof allocation in plant was conducted using analysis of variance (ANOVA) and Tukey's test was performed to examine the differences between means. Results showed the effect of different grazing intensities (mostly sheep of Moghani breed) on biomass of A. austriaca was significant. Results of compare mean showed that the greatest amount of nitrogen allocation in the aerial biomass of A. austriaca (2.2 mg/kg) was observed in the moderate grazing intensity. Moreover, the greatest amount of carbon allocation in the roots of A. austriaca (22 mg/kg) was occurred in the moderate grazing intensity. In general, attention to effects of grazing different intensities on vegetation factors such as carbon and nitrogen allocation, is essential for rangelands correct management and protection.
grazing intensity,carbon and nitrogen allocation,Artemisia austriaca,Biomass
https://jrwm.ut.ac.ir/article_65324.html
https://jrwm.ut.ac.ir/article_65324_ac2f18dd1c3e257c5fe109588af55be6.pdf
University of Tehran
Journal of Range and Watershed Managment
5044-2008
2423-7795
70
4
2017
12
22
The effect of osmopriming and hormopriyming on germination and early growth of
Festuca ovina under drought stress (in vitro)
909
919
FA
Masoomeh
Abbasi Khalaki
University of Mohaghegh Ardabili
mabbasi6@ut.ac.ir
Ardavan
Ghorbani
0000-0001-7201-1225
University of Mohaghegh Ardabili
ardavanica@yahoo.com
Sahar
Samadi Khanghah
University of Mohaghegh Ardabili
m_abasi6@yahoo.com
10.22059/jrwm.2018.208553.1017
Seed priming is a technique by which the seeds of the conditions before getting on their bed and ecological environment in terms of physiological and biochemical readiness to receive germination. Experiment was conducted using a completely randomized design in summer 2015 in rangeland laboratory– University of Mohaghegh Ardebili. Treatments include: osmopriming (primed with KNO3 with the Concentration of 0.3 and 0.2 %), hormopriming (primed with GA3 with the concentration of 500 and 1000 ppm) and control (distilled water). Drought stress was applied by using solution of PEG-6000 with three levels of 0, -6 and -12 bar. Analysis of variance showed that the osmopriming and hormopriming treatments and levels of drought stress had significant difference (p<0.01) on germination and early seedling growth of F. ovina in germination percentage, germination rate, root and shoot length, vigor index, allometric coefficient and mean germination time. In general, osmopriming had more desirable performance compared with hormopriming and control. Except allometric coefficient in other Indicators, NO3 0.2 % in drought 0, has had the most impact on germination and early growth of these species.
Priming,Germination indices,Seedling growth,Stress,Sheep Fescue
https://jrwm.ut.ac.ir/article_65325.html
https://jrwm.ut.ac.ir/article_65325_b4e1b840ce4c3e3dc7008ea2c9d17d10.pdf
University of Tehran
Journal of Range and Watershed Managment
5044-2008
2423-7795
70
4
2017
12
22
Modelling and Assessment of Landslide Susceptibility Zonation (Case Study: Semirom Basin)
921
939
FA
ALIREZA
Arabameri
دانشجوی دکتری دانشگاه تربیت مدرس تهران
alireza.ameri91@yahoo.com
kourosh
shirani
esfahan
shirani@yahoo.com
khalil
rezai
kharazmi university
k-razai@yahoo.com
mojtaba
yamani
tehran university
myamani@yahoo.com
10.22059/jrwm.2017.238368.1152
landslides situation recognized using interpreting the aerial photos and extensive field measurements. Among total number of 200 identified landslides, %70 (140 landslides) of them have been utilized for model executing and %30 (60 landslides) of them for verification randomly. This research criteria including geomorphological parameters, hydrological parameters , geological parameters and environmental parameters . The Shannon’s entropy model have been used for defining the criteria weight and Area density model for defining classes weight, then the regionalization map obtained by combining the criteria and classes weight in ArcGIS 10.2 software environment and classified to 5 classes very little, little , moderate, high and very high according to natural fractures. The Roc curve have been used for model verification. The clerical accuracy results indicated that the compound model have the high accuracy 0.877 (87.7%) for identifying the regions susceptible to landslide. According to the results, slope length, slope and topography wetness index have had the most effect in occurring the landslide. Among total area of region (168547 hectar), 27.39% (46165.02 hectar) have been placed in high and very high sensitive. The prepared regionalization map can be useful for planning land use and building the infrastructure installations such as road.
landslide,Regionalization,compound method,Verification,ROC Curve
https://jrwm.ut.ac.ir/article_65326.html
https://jrwm.ut.ac.ir/article_65326_0178ca688ff2b4a4e6328ca150147695.pdf
University of Tehran
Journal of Range and Watershed Managment
5044-2008
2423-7795
70
4
2017
12
22
The effect of different intensities of grazing on soil chemical properties
941
951
FA
Bakhtiar
Fattahi
0000-0001-6187-2601
Assistant Professor, Department of Watershed and Rangeland, Faculty of Natural Resources and Environment, Malayer University, Hamedan-Iran.
fattahi_b@yahoo.com
Mohammad
Jafari
0000-0002-3484-7723
استاد گروه احیاء مناطق خشک و کوهستانی، دانشگاه تهران
jafary@ut.ac.ir
Soheila
Aghabeigi Amin
Assistant Professor, Department of Natural Resources, Faculty of Agriculture, Razi University, Kermanshah-Iran
saghabeigi@yahoo.com
mahdieh
salehi
6. Former M.Sc. Student of Range management, Faculty of Natural Resources, Tehran University, Tehran-Iran.
salehi_ma23@yahoo.com
ayoub
karimi
Former M.Sc. Student of Range management, Faculty of Natural Resources and Environment, Malayer University, Malayer-Iran.
karimi_a@yahoo.com
Azad
Karami
Former M.Sc. Student of Range management, Faculty of Natural Resources, Tehran University, Tehran-Iran.
karami_az@yahoo.com
10.22059/jrwm.2017.22922.
Abstract<br /> This study aimed to investigate the effect of different intensities of grazing on soil chemical properties on Gonbad paired basins-Hamadan. The objective of this research was to characterize the impact of sheep grazing intensity on soil chemical behavior on mountainous in Hamadan rangelands (Gonbad paired basins). Grazing intensity was classified as light, moderate and heavy, then the soil samples from the three depths of 0-10, 10-20 and 20-30 cm were collected. The soil data was analyzed via SPSS (ANOVA). Results showed that the soil OC, total N content and organic matter decreased significantly with grazing intensity and they were greatest at the surface and decreased with depth. The amount of Calcium and Magnesium won't be affected by grazing intensity. The decreases in soil OC suggest Carbon storage in the soil of grassland declined as grazing intensity increased. Combined with the decreases in soil TN content, this also means heavy grazing could lead to decreases in soil quality and fertility. Uneven grazing intensity is an inherent feature of a season long-grazing system and there are risks to avoid quality and environmental health.
Rangeland,Grazing,soil,Carbon,Nitrogen
https://jrwm.ut.ac.ir/article_65328.html
https://jrwm.ut.ac.ir/article_65328_b0182ae9d5fba3c87c5418e61a65f1a3.pdf
University of Tehran
Journal of Range and Watershed Managment
5044-2008
2423-7795
70
4
2017
12
22
Chronology of small dams sediments based on depth changes in sediment characteristics
(case study: Hasan Abdal watershed, Zanjan province)
953
963
FA
sadat
feiznia
university of tehran
sfeiz@ut.ac.ir
Meisam
Samadi
Ph.D. Student of Watershed Management, Gorgan University of Agricultural Science and Natural Resources
samadi.hojjat@ut.ac.ir
Teimur
Teimurian
Ph.D. Student of Watershed Management, University of Tehran
t.teimurian@ut.ac.ir
10.22059/jrwm.2018.36696.615
The age determination of sediments is usually performed by different methods, all of them need a lot of cost, effort and research facilities. The goal of this research is to compare the results of sediment granulometery with precipitation data to perform chronology of sediments. In this study four check dams were selected and profiles were drilled in their sediments. Then sediment sampling was performed in different horizons based on texture and color of the sediments. Granolumetric analyses were performned on samples and the results were analyzed by Gradistat Software. Long-term (45 years) rainfall statistics of Zanjan Station was obtained from Zanjan Meteorological Office for determination of low-water and high-water periods using PNPI (Percent of Normal Precipitation Index). The results of granolumeteric analyses were compared with the results of rainfall analyses which showed that sandy texture relates to high-water and silty texture to low-water periods. The results showed that in thirteen samples from seventeen samples, there is complete conformity between granolumetric and climatic results and that accurate recognition of high-water and low-water periods can be reached using granolumetric characteristics.The age of sediments in four small dams is as follow: Sediments of profile one were deposited between 2005 to 2011, profile 2 between 2006 to 2011, profile 3 between 2008 to 2011 and profile 4 between 2008 to 2011 years. Using sediment chronology of each horizon in sediment profiles, sediment yield potential of upland drainage basin of each small dam in different temporal phases can be estimated.
Chronology,profile sampling,Sediment,small dam,Hasan Abdal
https://jrwm.ut.ac.ir/article_65329.html
https://jrwm.ut.ac.ir/article_65329_d351f4e4edcc4970f5436e08d99e693d.pdf
University of Tehran
Journal of Range and Watershed Managment
5044-2008
2423-7795
70
4
2017
12
22
Performance of HEC-HMS and IHACRES Hydrological Models in Simulation of Flood Hydrograph
965
976
FA
Mohammad
Golshan
PhD Student, Watershed in University of Agricultural Sciences and Natural Resources, Sari
golshan.mohammad@yahoo.com
Abazar
Esmaili
mohaghegh ardabili university
esmaliouri@uma.ac.ir
ali
afzali
0000-0001-6747-2836
university of tehran
aliafzali61@ut.ac.ir
Afshin
Jahanshahi
university of sari
afshin.jahanshahi@yahoo.com
10.22059/jrwm.2017.229901.1106
Simulation with using of computer models are developing very fast and these models are essential tools for understanding of man from the watershed and hydrological processes. In this study IHACRES and HEC-HMS rainfall runoff models was used for simulation of four flood hydrographs in Kasilian watershed with area 67.8 square kilometers in Mazandaran province. To prepare the Requirements maps for running HEC-HMS model was used HEC-GeoHMS extension. Hyetograph data with 15 minutes time step and its related hydrograph was entered to two models based on 1 hour time step. Then simulation of the flood hydrograph was done based on 15 minutes time step. CP and RE% statistical coefficients was used for evaluation of models performance. Values of this coefficients using the HEC-HMS model for flood 26 November 1994 was calculated 0.72 and 118.26 respectively and for flood 6 October 1996, 0.89 and -24.63 respectively and using the implementation of IHACRES model these coefficients in the first flood was calculated 0.63 and 152.4 respectively and in the second flood 0.79 and -35.6 respectively. The results showed that both use models have acceptable performance for simulation of flood hydrograph in this area and HEC-HMS model has better performance in compared with IHACRES model.
Flood,simulation,Hydrograph,Kasilian,hydrological model
https://jrwm.ut.ac.ir/article_65332.html
https://jrwm.ut.ac.ir/article_65332_a9ea0ab0ea640f54270603969fdd9725.pdf
University of Tehran
Journal of Range and Watershed Managment
5044-2008
2423-7795
70
4
2017
12
22
Performance evaluation of different estimation methods of suspended sediment load by sediment rating curve in Sefidrood watershed
977
990
FA
sedigeh
mohamadi
university of tehran
mohamadisedigeh@ut.ac.ir
Ali
Salajegheh
0000-0000-0000-0000
university of tehran
salajegh@ut.ac.ir
Hassan
Ahmadi
0000-0001-7375-3108
university of tehran
ahmadi@ut.ac.ir
Jamal
Ghoddousi
z
jamal_go@yahoo.com
Ali
Kianirad
assistant professor
akianirad@gmail.com
10.22059/jrwm.2018.22911.
Suspended sediment load is the biggest non-point pollution source and a major factor of degradation of surface water quality. Because of hydraulic models of sediment transport can not predict the suspended sediment load, sediment rating curves as usual hydrological methods are utilized spread for this goal. Cause of regression equations of rating curve have a lot of bias due to logarithmic convert, correction factors in optimization of sediment rating curve were used for eliminating of logarithmic conversion effect and bias of extrapolation in 20 hydrometric stations in up streams and major rivers of Sefidrood watershed. Comparing of 9 rating curve methods as one-linear, one-linear with correction factors as CF1, CF2, FAO, two-linear, mean loads within discharge classes, mean loads within discharge classes with correction factors as CF1, CF2 and <br /> FAO was conducted by RMSE and NASH criteria. Results showed that mean loads within discharge classes, mean loads within discharge classes with CF1 and CF2 correction factors have the most fitting to Sefidrood watershed stations. Our findings illustrated that CF1 and CF2 correction factors in majority of stations have compensated underestimation of rating curves and increased efficiency of models. Power of equation between sediment load and area was more than of one. According to results 30 million ton suspended sediment load enter to reservior of Sefidrood dam annually.<br /> Key words: sediment rating curve, Sefidrood, model efficiency, logarithmic conversion, NASH criteria.
Sediment Rating Curve,Sefidrood,model efficiency,logarithmic conversion,correction factor
https://jrwm.ut.ac.ir/article_65340.html
https://jrwm.ut.ac.ir/article_65340_51adc308d2c360998dba583e26f7b3c0.pdf
University of Tehran
Journal of Range and Watershed Managment
5044-2008
2423-7795
70
4
2017
12
22
Establishing the appropriate model of height-weight relationship of two key species of Dactylis glomerata and Bromus tomentosus to estimate utilization of
Javaherdehs’ rangeland of Ramsar
991
1003
FA
mahdie
mahmoodi
msc grajuated
mahmoodi.mahdie@gmail.com
Ataollah
Ebrahimi
univrsity of sharekord
ataollah.ebrahimi@nres.sku.ac.ir
Mohammad Hasan
Jouri
islamic azad university of noor
mjouri@gmail.com
pejman
tahmasebi
university of shahrekord
pejman.tahmssebi@nres.sku.ac.ir
10.22059/jrwm.2018.22835.
The evaluation of utilization of key species is cornerstone of decision-making in rangeland management. Measuring utilization is essential for regulating grazing intensity, grazing pressure and distribution of animals. utilization of two key grass species of Dactylis glomerata and Bromus tomentosus, as two important rangeland species is determined using height-weight relationship. The research is done in two vegetative periods of prior to flowering and flowering stages in two region of grazing land and exclosure by 32 transects of 100-meter length. To do so, the height of species was measured and cut at 1-cm above soil surface and weighted freshly. The samples are clumped and moved to the laboratory and oven dried at 65°c after separating litter divisions Then, the whole individual plants were weighted and cut in 5-cm intervals and each part was re-weighted and recorded separately for each species. Height-weight relationships were analyzed by different regression models in SPSS v.18 software. <br /> Result shows that sigmoid model significantly illustrate the height-weight relationship of both species of Dactylis glomerata and Bromus tomentosus with R2=0.994 and 0.997 at prior to flowering stage in the exclouser respectively. Similarly, sigmoid model also elucidate the height-weight relationship of both species of Dactylis glomerata and Bromus tomentosus with R2=0.975 and 0.998 at the flowering stage in the exclouser, respectively. The sigmoid model also best fitted for depicting height-weight relationship of both species at prior to flowering stage in grazing land for both species with R2=0.996, too.
Rangeland,Proper Use,Height-Weight profile,Dactylis glomerata,Bromus tomentosus
https://jrwm.ut.ac.ir/article_65344.html
https://jrwm.ut.ac.ir/article_65344_42d1ee3e80b5b9bbdeb9c8baaad33c80.pdf
University of Tehran
Journal of Range and Watershed Managment
5044-2008
2423-7795
70
4
2017
12
22
Comparison of the existing and RS geological maps (Case study: Vartavan catchment)
1005
1013
FA
jamal
mosaffaie
Assistant Professor, Soil Conservation and Watershed Management Research Institute (SCWMRI), Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran.
jamalmosaffaie@gmail.com
mohammad reza
ekhtesasi
professor; Faculty of natural resources, Yazd university (mr_ekhtesasi@Yazd.ac.ir )
mr_ekhtesasi@yahoo.com
Amin
Saleh pourjam
Assistant Professor, Soil Conservation and Watershed Management Research Institute (SCWMRI), Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran.
salehpourjam@scwmri.ac.ir
10.22059/jrwm.2017.40616.644
Study of geological units is one of the basic studies in many different sciences such as natural resources. The use of geological maps produced by geological survey is now the basic of geological studies in detailed-operating and investigative studies of natural resources. On the other hand, during the last years, remote sensing technology has been introduced as a new and efficient tool for geological studies that in addition to proper precision, it has other benefits such as accessibility to impassable or inaccessible mountainous regions. In this study, comparing the accuracy of existing geological and remote sensing maps of Vartavan catchment of Qazvin province has been the object of the study which was evaluated with the ground realities. So first, maps of geological survey were examined. Then, various image processing techniques including False Color Composite (FCC), Principal Component Analysis (PCA), Optimum Index Factor (OIF) and Band Ratio (BR) were used to enhance different lithological units and finally, RS lithology map of the catchment was prepared. Considering the variety of rocks and formations of the study area, the FCC and OIF techniques have respectively the most capabilities for differentiation of the rocks. Kappa coefficient of 0.39 between the two maps indicates low agreement between them. Checking the accuracy of maps based on the ground realities showed that photo-lithological map is more accurate (97.1%) compared to geological map (52.5%).
Geological & photo-lithological map,remote sensing,Landsat imagery,Vartavan catchment
https://jrwm.ut.ac.ir/article_65346.html
https://jrwm.ut.ac.ir/article_65346_53d53e9cc1d3b98c4c8d0c7369467fb8.pdf
University of Tehran
Journal of Range and Watershed Managment
5044-2008
2423-7795
70
4
2017
12
22
Comparing the performance of Artificial Neural Network (ANN) to predict the long term Meteorological Drought using Climatic Parameters and teleconnection (case study: South of Qazvin Province)
1015
1030
FA
Fatemeh
Maghsoud
tarbiat modarres university
f.maghsoud@modares.ac.ir
Mohammad Reza
Yazdani
Associate Professor
moreya1@yahoo.com
Mohammad
Rahimi
دانشیار گروه بیابانزدایی دانشکدۀ کویرشناسی، دانشگاه سمنان
mrahimi1972@googlemail.com
Arash
Malekian
استادیار دانشکدۀ منابع طبیعی، دانشگاه تهران
malekian@ut.ac.ir
ali asghar
zolfaghari
assistant professor
azolfaghari@semnan.ac.ir
10.22059/jrwm.2018.122721.862
Overview, drought is effected an unusual dry period which is enough continued and causes imbalance in the hydrologic status, as depletion of surface water and groundwater resources. The purpose of this research is modeling meteorological drought prediction using Neural Network- Multi layer Perceptron, parameters and climatic signals in three time scales include short, middle and long term in a rain-gauge station located at south plain of Qazvin Province. Three different scenarios were tested as inputs model. Optimal combination of variables was determinate by Gamma-Test after identification of input variables using cross-correlation. Results showed, influence of climatic signals increased and against the influence of meteorological parameters decreased when time scale were increased from short-term to long-term. MEI (Multivariate ENSO Index) and rainfall were introduced as the most effective climatic signals and meteorological parameter for each scale, respectively. Neural Network modeling which has hidden layer with enough neurons, Sigmoid Function in middle layer and linear function at output layer was used. The most appropriate of the number neurons was determined in each scenario and wasn’t observed significant correlation between increasing or decreasing the error and number of neurons. Finally, the most appropriate network structure was determined based on evaluation indexes in three scenarios and each time scale.
Drought,Gamma-Test,prediction,Artificial Network,Climatic Signal
https://jrwm.ut.ac.ir/article_65356.html
https://jrwm.ut.ac.ir/article_65356_036fec7151cb1978b7ec2d3537936fcc.pdf
University of Tehran
Journal of Range and Watershed Managment
5044-2008
2423-7795
70
4
2017
12
22
Determination of appropriate regions for groundwater artificial recharge of Ravansar County
1031
1043
FA
kazem
Nosrati
shahid beheshti university
k_nosrati@sbu.ac.ir
mohammad mehdi
hossein zadeh
shahid beheshti university
m_hoseinzadeh@sbu.ac.ir
نگار
بهرامی
انشجوی کارشناسی ارشد، دانشکده علوم زمین، دانشگاه شهید بهشتی
bahramynegar@gmail.com
10.22059/jrwm.2018.211564.1032
Growing population and increasing water resources demand have caused to slump groundwater level in many plains. Therefore there is a necessary to improve the quantity and quality of the aquifers. One of the most important methods to increase water table in recent decade is groundwater artificial recharge. The main objective of this study is to select sites more suitable for groundwater artificial recharge in Ravansar plain. In view of this, the raster map layers of criteria including geology, slope, alluvial thickness, infiltration rate, permeability, erodibility, land use, percent of silt and clay were prepared. Then each of these criteria was ranked using analytic hierarchy process (AHP) and weighting liner component (WLC) methods for two artificial recharge methods including flood spreading and spreading basin. The results showed that based on the selected indicators and the zonation map in two methods, the best sites located in northern, northeastern and southwestern of the study area and fluvial fans adapted with the best sites for groundwater artificial recharge.
Geomorphological factors,Artificial recharge,WLC model,fluvial fan,Ravansar County
https://jrwm.ut.ac.ir/article_65358.html
https://jrwm.ut.ac.ir/article_65358_1b41028a992377f9db458216b9fc30a1.pdf
University of Tehran
Journal of Range and Watershed Managment
5044-2008
2423-7795
70
4
2017
12
22
Effect of various structures and input on the estimation of daily discharge of Amameh watershed
1045
1066
FA
mahboobeh
moatamednia
Ph.D. of Watershed Management Science and Engineering
mmoatamednia@yahoo.com
ahmad
nohegar
university of tehran
nohegar@ut.ac.ir
arash
malekian
university of tehran
malekian@ut.ac.ir
maryam
saberi anari
IT,Technical and Vocational University,yazd,iran
maryam.saberi@gmail.com
10.22059/jrwm.2018.135478.930
One of the most important of hydrological computing in ecosystem is estimation of the relationship between rainfall and runoff. So that investigation occurred processes in it and the estimate of important outputs such as flood and sediment is considered one the most important mission of a watershed project. Because of variable spatial and temporal characteristics of incident in the water cycle and the nonlinear relationship and uncertainties, none of the statistical and conceptual models are able to be a better and capable model for that. But today using nonlinear networks as intelligent system for forecasting such complicated event can be efficient and effective in many problems of ecology. For this aim it is used variables such as precipitation, temperature, evartanspiration, relative humidity and discharges in daily scale over 42 years period and assessment 62 different suggested structures for surveying river flow in Amame representative watershed. For comparison it used Multi Layer Perceptoron (MLP) and Radial Basis Function (RBF).The results show that out of 6000 available models for estimation river flow model number 54 with 8-9-8-1 network structure and 8 types of input variable such as precipitation (Pt), precipitation with two lags (Pt-1 and Pt-2), temperature (Tt), evartanspiration (ETt), relative humidity (Rht), and discharge with two lags (Qt-1 and Qt-2) with Multi Layer Perceptoron method has the best function. The error of model was 0.03, 0.18 and 0.04 in training and 0.02, 0.14 and 0.02 for testing stage for MSE, RMSE and MAE, respectively.
Amame representative watershed,Artificial Neuron Network,Error Back Prapagation,Rainfall-runoff relationship
https://jrwm.ut.ac.ir/article_65372.html
https://jrwm.ut.ac.ir/article_65372_de4141b5c64803ede7d57433df3c18f2.pdf
University of Tehran
Journal of Range and Watershed Managment
5044-2008
2423-7795
70
4
2017
12
22
Effect of Cushion Plant Canopy of Onobrychis cornuta on Distribution of Soil Seed Bank in Alpine Rangelands of Vaz Watershed
1067
1078
FA
parisa
niknam
tarbiat modarres university
niknam.parisa1990@gmail.com
Reza
Erfanzadeh
tarbiat modares university
erfanzadeh@yahoo.com
حسن
قلیچ نیا
مرکز تحقیقات کشاورزی و منابع طبیعی ساری
ms_ghelichh@yahoo.com
10.22059/jrwm.2017.212519.1035
In this study, the effect of cushion plants on spatial distribution of soil seed bank was studied in mountainous and hilly rangelands in Vaz watershed, Mazandaran province. Therefore, we selected randomly 20 Onobrychis cornuta individuals and sampled from soil at four positions around each individual (upslope, downslope, center and, outside as control). Soil samples spread out under natural conditions in greenhouse to germinate the seeds. Germinated seeds were identified then, the seed density per square meter and species richness were calculated and both of them were compared between the four sampling positions. Two and one-way ANOVA, T-test and Duncan test were used to compare the effect of location, depth and their interaction on soil seed bank characteristics. The results showed that the effect of the location and depth of the density and species richness at level of 0.01% were significant. The results of Duncan test showed that seed density in the upslope and center positions (average 5473 and 4099.5 seed/m2, respectively) was significantly higher than seed density in the downslope and outside positions (average 2685.5 and 2413.8 seed/m2, respectively). Similarly, species richness in the upslope and center positions (the average 9.7 and 9.5, respectively) was significantly higher than species richness in the downslope and outside positions (average 7 and 6.4, respectively). Density and species richness of soil seed bank at depth of 0-5cm was significantly greater than the depth of 5-10cm. This study clarified the positive significant effect of canopy of cushion plants on seed density and richness.
Cushion plant,Onobrychis cornuta,Soil seed bank density,Species richness,Vaz watershed
https://jrwm.ut.ac.ir/article_65361.html
https://jrwm.ut.ac.ir/article_65361_ae8d00bedf6b7cb8300cc6de81519d89.pdf
University of Tehran
Journal of Range and Watershed Managment
5044-2008
2423-7795
70
4
2017
12
22
Evaluation of Effects of Density of Atriplex cultivation on Soil Organic Matter and Particles
(Case Study: Incheborun, Golestan province)
1079
1087
FA
roya
vazirian
PhD student. Arid Zone Management, Yazd University,Iran
royavazirian@yahoo.com
hamid reza
asgari
assistant professor
hras2010@gmail.com
10.22059/jrwm.2017.99371.701
Abstract:<br /> Soil particles are one of the most effective characteristics related to erodibility and main hydrological and physical aspects of soil. This is important to understand soil characteristics which control soil stability in the case of conservation of soil structure. Also, recognizing critical soil properties such as organic matters in the regions, where soil erosion is resulted from natural patterns of aggregates will be fundamental key in conservation strategies. In this paper, organic matter measurement, discovery of particles stability and interactions between these two factors have been aimed. Sampling was done in three different densities (<200, 200-400 and >200 stand per hectare) and 30 replications. The results revealed that Atriplex spp. Increased soil organic matter and also soil stability. Different planting distances were not effective in level of 5%. Therefore; improvement of soil particles stability and controlling soil erosion in the study area depend on soil management and implication of soil conservation projects.
Key Words: Soil particles stability,organic matter,Atriplex,Incheborun
https://jrwm.ut.ac.ir/article_65368.html
https://jrwm.ut.ac.ir/article_65368_c00c3b1079084c6e441f200878c4f590.pdf
University of Tehran
Journal of Range and Watershed Managment
5044-2008
2423-7795
70
4
2017
12
22
Investigation of effect of parent material and plant species on profile distribution of nutritional elements in soils of Kuhrang mountain rangelands
1089
1102
FA
pooya
hoshyar
Former MSc student, Department of Soil Science, Faculty of Agricultural Engineering, Isfahan University of Technology, Iran.
poya1329@yahoo.com
Hossein
Khademi
assistant professor of Department of Soil Science/ Isfahan University of Technology
hkhademi@cc.iut.ac.ir
Shamsollah
Ayoubi
Department of soil science, Isfahan university of technology
ayoubi@cc.iut.ac.ir
Mehdi
Norouzi
Department of Soil science and engineering, Faculty of agriculture, University of Tabriz
mehdi_uni2000@yahoo.com
10.22059/jrwm.2017.230018.1107
Parent material and vegetation are two important and influential factors in the formation of soil. Type of elements in the soil and their availability to plants depends deeply on soil parent material. However, type and density of vegetation change with amount of organic matter and mechanism of element cycle overshadowed the availability of element in rangeland ecosystem. This study were conducted to investigate profile distribution of nutritional elements affected by rangeland species and different parent material as a factorial trial and completely randomized design with three replications in rangelands around Kuhrang city. Therefore, in the study area, three different parent matter such as fossiliferous marl limestone, fossiliferous dolomitic limestone and red conglomerate and sandstone were selected. In each parent material, three places under Astragalus spp and Daphne and the bare part as a control profile to depth of 100 cm were dug. Then the soil physical and chemical properties and concentrations of nutritional elements in profiles were measured. The results of this study showed that type of parent material have significant effect on amount of soil element while the vegetation in some cases could not make a significant difference in concentration of elements. Red conglomerate parent material because of coarser texture, release fewer element compared to marl and dolomite limestone in soil. Soils in study area except soils derived from red conglomerate parent material, there is no shortage of potassium and phosphorous. Furthermore, concentration of elements in different depths of the profiles obeyed a similar pattern
potassium,Daphne,Astragalus spp,Parent material,Total nitrogen,Humous
https://jrwm.ut.ac.ir/article_65369.html
https://jrwm.ut.ac.ir/article_65369_58c24c16ae2f098dc7959164e46fc564.pdf