一、基本概况祁连山东端——青海省天祝县地处青藏、黄土、内蒙古三大高原交汇地带,是一个多高山、广流域、少平川的山区,海拔高,气温低、生长期短、降水量小,蒸发量大,自然灾害频繁,农民收入不稳定。全县辖22个乡镇,188个行政村,22.67万人,86.8%的是农村人口,且有13万人就居住在森林、流域内。试验地点选择祁连山东端典型的三级流域—— First, the basic profile Qilian east end - Tianzhu Qinghai Province is located in Qinghai-Tibet, Loess, Inner Mongolia convergence of the three major plateaus, is a mountainous, wide basin, less Hirakawa mountains, high altitude, low temperature, short growth period, Precipitation is small, large evaporation, frequent natural disasters, income instability of farmers. The county administer 22 townships, 188 administrative villages, 226,700 people, 86.8% of the rural population, and 130,000 people live in forests, watersheds. Test site selection Qilian Shandong typical three-tier watershed -