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黄土高原位于中国北方地区与西北地区的交界处,它东起太行山,西至乌鞘岭,南连秦岭,北抵长城,总面积40万平方公里,是世界最大的黄土堆积区。这里气候较干旱,年均降水量一般在200～700毫米之间;土质松软,黄土颗粒细,含有丰富的矿物质养分,利于耕作,但平坦耕地不到10%,绝大部分耕地分布在10°～35°的斜坡上。由于夏季雨水集中,且多暴雨,缺乏植被保护,黄土高原水土流失严重。在流水的长期侵蚀
The Loess Plateau is located at the junction of North China and Northwest China. It runs from Taihang Mountain to the east, Wushaoling to the west, Qinling Mountain to the south and the Great Wall to the north with a total area of 400,000 square kilometers. It is the largest loess accumulation area in the world. The climate here is arid and the average annual precipitation is generally between 200 and 700 mm. Soft soil with fine loess particles is rich in mineral nutrients and conducive to tillage, but less than 10% of the cultivated land is flat. Most of the arable land is distributed in 10 ° ~ 35 ° on the slope. Due to the concentrated rainfall in summer and heavy rains and lack of vegetation protection, soil erosion in the Loess Plateau is serious. Long-term erosion in the water