Pouyan Dehghan; Hossein Azarnivand; Hassan Khosravi; Gholamreza Zehtabian; Alireza Moghaddam Nia
Abstract
The excessive reducing capacity of natural resources is one of the most important challenges that human beings have faced it in the last century. Proper land use and land use management based on its ecological potential play an important role in achieving sustainable development. Hence, in order to achieve ...
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The excessive reducing capacity of natural resources is one of the most important challenges that human beings have faced it in the last century. Proper land use and land use management based on its ecological potential play an important role in achieving sustainable development. Hence, in order to achieve sustainable development and in order to use land appropriately, tendencies should be directed towards the planning and utilization of resources on the basis of their resources. Therefore, since agriculture has a great deal of environmental impact on urban areas, the evaluation of agricultural lands is necessary. The aim of this study is evaluation of ecological potential of land in Eshtehard in terms of agriculture and rangelands. For this purpose, the ecological potential of the lands of Eshtehard was evaluated using ecological criteria and using Fuzzy, Fuzzy AHP methods and Geographic Information System (GIS). The Fuzzy method was used to standardize the layers and also to assign weight to each of the indices used by Fuzzy AHP method. The results of this study showed that class 1 lands with 1.50% is the lowest and the class 4 lands with 25.36% of the total area of the study area has the biggest area. The results of the analysis in this study indicate the high efficiency of Fuzzy AHP method in assessing the ecological potential of the area and can be used with changes necessary for other areas and also other location actives.
Hossein Azarnivand; Sedigh MOhammadi; Sadegh Hossein niyaee; Pouyan Dehghan
Abstract
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) ...
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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.
Fatemeh Azariyan; Sara Valizadeh; Pouyan Dehghan; Hassan Khosravi
Abstract
Iran is mostly consisted of arid and semi-arid areas. Rudab region, Sabzevar, is indicative of an areaexposed to and affected by the risk of desertification. This study accordingly is aimed at assessingthe risk of desertification using ESAs model, through mapping the risk of desertification. Initially,work ...
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Iran is mostly consisted of arid and semi-arid areas. Rudab region, Sabzevar, is indicative of an areaexposed to and affected by the risk of desertification. This study accordingly is aimed at assessingthe risk of desertification using ESAs model, through mapping the risk of desertification. Initially,work units’ map was prepared based on which relevant indicators were valued. Then, relevantindices were prepared based on ESAs model using GIS. Finally, ESAI index was calculated foreach work unit. After mapping the risk of desertification, desertification damages were evaluated. Itwas found out that the risk of desertification in Rudab can be classified at three classes i.e. class I,II, and III; and subclass III1 covered the biggest surface of the study area i.e. 44.48%. Based ondesertification damage map, Rudab region is divided into five classes so that class III covering35.20 percent of the area is the biggest area. Active sandy dune faces are prone to the highest risk ofdesertification since they entail significant risk factors and need to be paid due attention for desertgreening programs.