【摘 要】
：
Rangeland ecosystems have an important role in supplying various products and services including livestock products, wildlife, refuges, biodiversity and water quality.Iran-Touranian region as one of a
【机 构】
：
Gorgan University of Agricultural Sciences and Natural Resources
【出 处】
：
第九届CTWF(CAS-TWAS-WMO)国际研讨会
论文部分内容阅读
Rangeland ecosystems have an important role in supplying various products and services including livestock products, wildlife, refuges, biodiversity and water quality.Iran-Touranian region as one of arid and semi-arid rangelands attributes with low rainfall and rather long dry season period and high temperature amplitude.The 50-year period (1955-2005) of climatic parameters i.e.the annual average temperature, the average of the minimum temperature, the average of the maximum temperature, number of days with the maximum temperature above 30 0C, number of days with the minimum temperature below 0 0C, the lowest record of temperature and the highest record of temperature were analyzed for these stations.
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