黄土高原水土流失及其防治措施

据统计，黄土高原水土流失面积高达43万km²，年输入黄河泥沙量16亿t。严重的水土流失导致土壤肥力低下，土壤质地变粗，团粒结构遭到坡坏，加剧了土壤缺水，改变了土壤成立过程。根据黄土高原丘陵区水土流失特征，探讨了水土流失原因，并提出了相应的防治措施──水土保持耕作措施，集水深蓄耕作技术，被改梯及打坝淤地工程措施及人工林草生物措施。

Soil and Water Loss and Its Control Measures on Loess Plateau

According to statistics, the soil and water loss area of loess plateau is 43 × 104km²,the loess plateau discharges to Yellow River 16 × 10⁸tons of sediment per year. The serious soil and water loss lead that soil fertility reduce, soil texture become coarse, soil lack water seriously,soil particle structure has been destroyed,soil-forming process has been occured change. Based on the soil and water loss feature in the hilly region of loess plateau, probed the causes of soil and water loss, put forward controlling practices: soil and water conservation tillage measures, water collecting tillage technique,slope land changing terrace engineering practice,artificial forest-grass biological measure.