【作者】 张根锁； 张治国；

【Author】 ZHANG Gen-suo, ZHANG Zhi-guo(institute of soil and water conservation of Shanxi Province, 033001)

【机构】 山西省水土保持科学研究所；

【摘要】 王家沟流域是黄土高原开展水土流失综合治理较早的流域之一。本文根据王家沟流域多年径流泥沙观测资料。分析了在现阶段治理水平下,该流域水土流失的特点是:平水年和偏早年份,水土流失轻微,水土保持效益显著。而在丰水年或遇暴雨时,土壤侵蚀仍十分严重。坡耕地、沟头“V”型沟、村庄道路、红土沟坡和沟道小流域等五种侵蚀地类,面积占流域总面积的26.6%,其侵蚀量却占流域治理前年平均侵蚀量的50.56%,目前都尚未进行治理,是现阶段流域泥沙的主要来源,应加快加强治理。更多还原

【Abstract】 Wangjiago Watershed was one of the watershed on the Loess Plateau with earliest comprehensive controlling. According to the historical observation data in sediment and runoff on this watershed, soil and water loss conditions under current controlling measures were analyzed, and following conclusions related to soil and water loss characters can be reached: soil and water loss was light in the year with low rainfall, and the effect of soil and water conservation measures was remarkable; while in the year with large rainfall, especially with much storm, soil erosion still much serious. Areas of slope farming lands, gully head and gully in "V" shape, village roads, old loess slope and channel catchment accounted for 26.6% of the watershed area, but the soil loss on them accounted for 50.56% of the total in the watershed. There were no controlling measures on all these five types areas mentioned above, and were the main sources of sediment in the watershed. Thus effective measures should be carried out on these five types areas.更多还原