【摘要】 为研究黄土区切沟治理效益 ,在山西吉县进行大量的调查研究 .研究表明 :治理切沟的防洪减沙效益十分明显 ,降雨量为 70 .4mm ,30min最大雨强 0 .92mm min .未治理切沟土壤侵蚀量达 2 389t km2 ,而治理切沟水沙尚未出沟 .同时对治理切沟不同部位的不同林分土壤含水量、土壤理化性质等进行了研究 ,发现切沟内塌积土上林木生长、理化性质均优于其它地形部位更多还原

【Abstract】 What impressed people most are the gullies in the loess region are deep,steep,corroded acutely and hard to utilize.The benefit research of controlling gullies has not been reported.By means of fieldwork the authors found that local people have lots of feasible measures in controlling gullies in Jixian County ,Shanxi Province, and some controlled gullies and uncontrolled gullies for constructing the gage weirs were selected.The observation shows that erosion modulus of mixed\|forested gullies can be reduced by over 2?000 t/km 2.The soil physical properties of the forest growth on breakdown\|deposit soil are better than that in other location.更多还原