Volume 77 (2024)
Volume 76 (2023)
Volume 75 (2022)
Volume 74 (2021)
Volume 73 (2020)
Volume 71 (2018)
Volume 70 (2017)
Volume 69 (2016)
Volume 68 (2015)
Volume 67 (2014)
Volume 66 (2013)
Volume 65 (2012)
Volume 63 (2010)
Volume 62 (2009)
Development of near infrared reflectance spectroscopy (NIRS) calibration model to estimate the forage quality of shrub species

Hossein Arzani; vahideh Abdollahi; Javad Motamedi; Majid Akhshi

Volume 72, Issue 2 , September 2019, Pages 311-327


  Nowadays, most attention is focused on physical and non-destructive methods, such as NIRS, to measure the chemical composition of rangeland species. Therefore, the purpose of this study is to provide calibration models for Infrared NIRS to estimate the forage quality of shrub species, so that in addition ...  Read More

Investigation of Hydrological Drought Process Using Time Series Analysis and SDI index (Case Study of Marian River Basin of Lorestan Province)

leila abdollahi; Mohammad Faraji; ali haghizadh; Somayeh Dehdari

Volume 72, Issue 2 , September 2019, Pages 477-487


  Abstract The effects of droughts on surface water and groundwater resources reduce the amount of water available to different sectors. Hydrological drought initially begins with decreasing rainfall and is usually associated with lower levels of lakes and reservoirs. To this end, in order to ma ke appropriate ...  Read More

Investigation of vegetative characteristics of Allium hirtifolium in Isfahan province using logistic regression

Massoud Borhani; rahele sadeghzade

Volume 72, Issue 2 , September 2019, Pages 329-341


  . This bulb root plant has essential oil with medicinal property. The great need for this product has led to a large harvest of its bulbs from the rangelands, which has significantly reduced its stands in recent years. The aim of this research is to determine the vegetative characteristics of Allium ...  Read More

Dust Source Prioritization with using Statistical models (Case Study: Khorasan Razavi Provience)

Sima Pourhashemi; mehdi boroghani; abolghasem Amirahmadi; MohamadAli Zanganeh Asadi; Mahdi Salhi

Volume 72, Issue 2 , September 2019, Pages 343-358


  Due to the drought and land use changes in recent years, dust storm phenomenon in Iran has increased. The purpose of this research is to identify and prioritize dust source areas using bivariate models (probability model of event weight and frequency ratio model) in R software environment and determine ...  Read More

Evaluation and Mapping the vulnerability of groundwater to the contamination (Case study: Azhvan- Bisotun carbonate aquifers in Kermanshah)

ali dastranj; ahmad nohegar; Arash Malekian; Hamid gholami

Volume 72, Issue 2 , September 2019, Pages 375-390


  Abstract Vulnerability assessment and vulnerability mapping, is an important strategy to management of karst water resources. Due to the geomorphology of karst developed in karst aquifers and other natural conditions Azhvan-Bisotun area, Emissions are rapidly and widely. The aim of this study is mapping ...  Read More

Delineating changes in climatic variables and its impact on the Astragalus verus Olivier habitats in Isfahan Province

Morteza Khodagholi; Razieh Saboohi

Volume 72, Issue 2 , September 2019, Pages 359-374


  The genus of Astragalus accounts for 31.4 percent of area of Isfahan Province with Astragalus verus Olivier as a foremost species. This study aimed to investigate the contributing climatic variables to distribution of this species. Moreover, the trends of climatic variables and their influence on the ...  Read More

Effect of conversion of rangeland to Forest cultivation on carbon emission changing in soil (case study: Sanandaj Rangeland)

Farnoosh zareii; Hamed Joneidi; Parviz karami

Volume 72, Issue 2 , September 2019, Pages 391-408


  This research was carried out to evaluate the effect of rangeland conversion to afforestation with Cupressuss arizonica and Celtic caucasica on soil carbon emission. In order to determine the rate of carbon and carbon dioxide emission by tele-alkaline method with a stacking chamber, monthly was performed ...  Read More

Determining the threshold of the most effective factors on increasing the length of gullies using data-mining algorithms and CART Decision Tree (Case study: Ghazian Watershed in Fars Province)

Seyed Masoud Soleimanpour; Bahram Hedayati; Majid Soufi; Mohammad Javad Rousta; Samad Shadfar

Volume 72, Issue 2 , September 2019, Pages 409-426


  One of the important relations in the erosion of gullies is to study the threshold of erosion creation and expansion. In recent decade, creation of new knowledge in determination of relation between variables was led to develop prediction methods in different science and therefore, investigating the ...  Read More

Association between North Atlantic oscillation and precipitation in Iran with weekly time scale

Nafiseh Seyyed Nezhad Golkhatmi; Javad Bazrafshan; Arezo Nazi Ghameshlou; Parviz Irannejad

Volume 72, Issue 2 , September 2019, Pages 427-442


  North Atlantic Oscillation (NAO) is one of large-scale signal that affects the north hemisphere. Various studies have investigated the correlations between Iran’s precipitations and North Atlantic Oscillation from monthly to yearly scales. This study has considered weekly time scale. The daily ...  Read More

Sediment fingerprinting and estimation uncertainty in Toulbane watershed, Golestan province

Meisam Samadi; Abdolreza Bahremand; Ali Salajegheh; Majid Ownegh; Mohsen Hoseializade; Abolhasan Fathabadi

Volume 72, Issue 2 , September 2019, Pages 443-461


  In order to develop management plans for water and soil conservation, it is necessary to determine the sources of sediment production in watersheds. During the past three decades fingerprinting technique has been used extensively in determining the contribution of different sources of sediment. In this ...  Read More

Comparison of effective ecological factors in the distribution of Trifolium species in Fandoghlou rangelands of Namin county

Sahar Samadi Khangah; Mehdi Moameri; Masoome Abbasi Khalaki

Volume 72, Issue 2 , September 2019, Pages 463-476


  The aim of this study was to investigate the ecological factors affecting the distribution of four Trifolium repense, T. pratense, T. micranthum and T. compestre species in Fandoghlou rangelands of Namin county in Ardabil province. Sampling was conducted in six sites with the presence and absence of ...  Read More

Indentification flora and protective categorization of plants in rangelands of Sadrabad of Nodushan, Yazd province, Iran

elham fakhimi; Hossein Naderi

Volume 72, Issue 2 , September 2019, Pages 489-504


  Floristic studies are fundamental for the applied sciences such as rangeland management and conservation. Rangelands of Sadrabad with an area of 40000 hectares is jocated in South West of Yazd province that it remarkable habitat for the floristic studies. In this study the floristic list of the region ...  Read More

Investigation of biological effects on vegetation change and soil sequestration in rangelands of the southern hills of central Alborz

hamed farzi; reza tamartash; zeinab jafarian; Mohammad reza Tatian

Volume 72, Issue 2 , September 2019, Pages 505-515


  Restoring vegetation can change the structure and dynamics of vegetation, as well as the change in other parts of the ecosystem such as soil. The success of recovery efforts will be achieved when assessing the characteristics of ecosystems over time and comparing with the control areas. Therefore, the ...  Read More

Investigation on lead dispersion and it's environmental indices in soils near Kushk Pb-Zn mine - Bafgh

sadat Feiznia; ahmad reza mokhtari; mohammad jaaferi; mohammad javad ghanei bafghi; ziba khodayian

Volume 72, Issue 2 , September 2019, Pages 517-526


  Mining and its various stages is one of the important factors in spreading pollution in natural environments. Contaminations may affect soil and water resources and actually enter the food chain due to absorption by plants. Among mineral elements, lead is more important because of its toxic effects. ...  Read More

Uncertainty Analysis of Hydrological Drought Characteristics Using Latin Hypercube Sampling (Case Study: Minab Dam Watershed)

faeze Ghasem Nezhad; Fazeli Mehdi; Omolbanin Bazrafshan; Mohammad Parvinnia

Volume 72, Issue 2 , September 2019, Pages 527-542


  Drought monitoring by the Standardized Runoff Index (SRI) presents some uncertainties, mainly dependent on the choice of the probability distribution used to describe the cumulative precipitation and on the characteristics of the dataset. In this study, uncertainty analysis for estimation of the hydrologic ...  Read More

Measuring and Prioritizing the Dimensions of Stakeholder's Adaptive Capacity Against Climate Change – Case Study: East of Gonabad City , Khorasan Razavi Province

S.Mahdi Taghipour; Shahram Khalighi Sigaroodi; Amir Alambaigi

Volume 72, Issue 2 , September 2019, Pages 543-556


  All rural and nomadic communities reside in natural watershed areas and, based on the specific climatic and geological conditions that each catchment area has, they are useful for living. Today, there is a danger to the livelihoods of non-residents as well as climate change caused by human activities, ...  Read More

Predicting the soil fragmentation caused by grazing using adaptive neuro-fuzzy inference system (ANFIS)

Zhila Ghorbani; Kiomars Sefidi; Farshad Keivan Behjou; Mehdi Moameri; Ali Ashraf Soltani Tolarod

Volume 72, Issue 2 , September 2019, Pages 557-568


  The most current way for measuring the soil fragmentation is determination of mean weight diameter (MWD). In this study, the adaptive neuro-fuzzy inference system (ANFIS) was used to predict of range soil fragmentation affected by different grazing intensities, distance from village and sampling depth. ...  Read More

Variations in CSR strategies in satlands of Kavir-e-Meyghan, Arak

Hamidreza Mirdavoodi; Adele Jalili; Ziba Jamzad; Ali Famaheini

Volume 72, Issue 2 , September 2019, Pages 569-585


  Classification of species in plant functional types (PFTs) according to Grime’s CSR theory has been found useful in understanding ecosystem functioning and processes and in quantifying variation along environmental gradients. The aim of this study was to assess variations in CSR strategies along ...  Read More

Presence of rangeland plant species in the seed bank of coal waste and surrounding rangelands in Karmozd-Savad kouh and Kiasar-Sari coal mines in Mazandaran province

Reza Namjooyan; Jamshid Ghorbani; Ghodrat alah heydari; Ghorban Vahab Zade

Volume 72, Issue 2 , September 2019, Pages 587-596


  Activities related to the extraction of minerals are one of the factors causing a disturbance in rangelands. Vegetation succession in mining areas depends on the soil seed bank. For this purpose, the soil seed bank was studied in two important coal extraction sites in Mazandaran province to identify ...  Read More

Investigation the effects of additives on the chemical properties of aeolian sand

Ali Yazdanpanahi; Khaled Ahmadaali; Salman Zare

Volume 72, Issue 2 , September 2019, Pages 597-608


  Biochar, as a soil reclamation material, has received attention by researchers during recent decades. In this study, a greenhouse experiment was conducted in a randomized complete block design (RCBD) in factorial arrangement in order to investigate the effect of natural and municipal waste compost biochars ...  Read More