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一、基本情况黄土高原溝壑區的水土保持試驗研究工作是选在具有代表性的董志原南小河溝流域進行的。董志原介于涇河上游馬連河与蒲河之間,面積約2,200平方公里,在比較完整的高原中,是最大的一个;可是由于歷年的嚴重水土流失,使原面溝壑縱横,破碎不堪,現在在2,200平方公里的面積中,原面面積不及40%,而溝壑面積已達60%以上。南小河溝是董志原較大溝壑之一,为蒲河
First, the basic situation Soil and water conservation in the gully area of the Loess Plateau Experimental study is selected in the representative Dongzhiyuan South Xiahegou watershed. Dongzhi was originally located between the upper reaches of the Jinghe River and the Mahe River, covering an area of about 2,200 square kilometers. It is the largest one in the relatively complete plateau. However, due to the serious soil erosion over the years, the ravines of the original surface have been crushed and crushed. Now, Of 2,200 square kilometers of area, the original area of less than 40%, while the gully area has reached more than 60%. South Creek ditch Dongzhi is one of the larger gully, Puhe