Volume 10, Issue 1 (spring 2006)
jwss 2006, 10(1): 273-290 |
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H. Arzani, M. Jangjo, H. Shams, S. Mohtashamnia, M. A. Fashami, H. Ahmadi, et al . A Model for Classification of Range Suitability for Sheep Grazing in Central Alborz,Ardestan and Zagros Regions. jwss 2006; 10 (1) :273-290
URL: http://jstnar.iut.ac.ir/article-1-539-en.html
URL: http://jstnar.iut.ac.ir/article-1-539-en.html
H. Arzani * 
, M. Jangjo , H. Shams , S. Mohtashamnia , M. A. Fashami , H. Ahmadi , M. Jafari , A. A. Darvishsefat , E. Shahriary
, M. Jangjo , H. Shams , S. Mohtashamnia , M. A. Fashami , H. Ahmadi , M. Jafari , A. A. Darvishsefat , E. Shahriary
Abstract: (30512 Views)
Range suitability and its grazing capability are the most important criteria in rangeland analysis and monitoring. Determination and monitoring of factors affecting on range suitability and diagnosis of them are important .All range ecosystem components affect range suitability. Which among them physical and vegetational factors, forage production, water resources and sensitivity to erosion were considered. The objective of this research was to determine range suitability of Lar, Dasht bakan, Ardestan, Siahrood rangelands to design a model for sheep grazing. This study was carried out in four regions, two of them (Siahrood and Lar) located in Alborz mountain chain, Ardestan in center of Iran and Dashtbakan in Zagros mountain chain. According to the results among physical factors, slope remoteness of watering points and sensitivity to erosion had more effect on grazing capability than vegetation factors. In Siahrood watershed aboundancy of poisonous plants, high slope, transient watering points and non resistant formations were limiting factors. High slope, sensitivity of soils and stones to erosion, kind of exploitation in Lar watershed affected range suitability. In Ardestan watershed, low range productivity, presence of invader plants, erosion, remoteness of watering points are major limitation of range suitability. In Dasht Bakan factors including slope, elevation, dispersion of water resources and transient water resources were limited grazing capability. In land evaluation each land utilization type has certain land use requirement and each land unit has certain land qualities. Utilization of rangeland based on grazing capacity, range readiness and recreation of degraded rangeland can improve suitability of rangelands in the studied areas.
Keywords: Grazing capability, Range suitability, Siahrood, Lar, Dashtbakan, Ardestan, Central Alborz, Zagros, Iran.
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