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陕西省安塞县水土保持实验区地处黄土丘陵区的中部,位于延河中上游。全实验区包括茶坊——县南沟8个行政村,32个自然村,总土地面积78.4llkm~2(其中可利用面积66.613km~2),海拔1013.3～1431.3m,人口密度46.6人/km~2,区内沟壑纵横,丘陵起伏,水土流失严重。 水土流失面积70.795km~2,占总土地面积的90.3％,其中严重水土流失面积占总土地面积的46.9％。多年平均降雨量为549.1
Ansai County, Shaanxi Province Soil and Water Conservation Experimental Zone is located in the middle of the loess hilly region, located in the upper reaches of Yan River. The experimental area includes 8 administrative villages and 32 natural villages in Nanfang County of Chafang County, with a total land area of 78.411km 2 (66.613km 2 of usable area), an elevation of 1013.3-1431.3m and a population density of 46.6 persons / km ~ 2, ravines in the region aspect, hilly, serious soil erosion. The area of soil erosion is 70.795km ~ 2, accounting for 90.3% of the total land area, of which 46.9% of the total land area is seriously affected by soil erosion. The average annual rainfall is 549.1