利用塘坝测淤量确定土壤侵蚀模数方法的探讨——以四川省西充县惯垭乡土壤侵蚀模数推算为例

Determination of Soil Erosion Modulus by Sedimentation Survey in Check Dams and Pools

本文应用沙量平衡原理,介绍了利用塘坝淤积量确定集水区内年土壤侵蚀模数的方法与步骤,并以计算实例证实了这种计算方法的科学性和可行性。此法计算结果与用径流小区观测资料推算的结果基本一致,值得在适宜地区大力推广应用。

According to the theory of sediment balance, this paper introduces the method and procedure of determining annual soil erosion modulus in a drainage area by measuring the siltation in check dams and pools. By calculation of actual examples, the paper also verifies the feasibility and scientific value of this calculation method. The results calculated by this method are basically in accordance with the results measured by survey data in runoff spots, so this method can be used in suitable areas.