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Study on the Neutron Activate Analysis Method for Soil Erosion
Authors
刘普灵
田均良
石辉
Publication date
1 January 2000
Publisher
Abstract
利用中子活化示踪法研究坡面土壤的侵蚀过程 ,发现坡面的相对侵蚀量从坡脚到坡顶随坡长的变化符合 Weibull分布 ,其形状参数主要受降雨量、降雨历时和径流深度的影响 ,尺度参数主要与平均雨强、I3 0 相关。坡面在侵蚀的同时也发生沉积 ,一般来说短历时高强度的降雨沉积量较小 ,而长历时低强度的降雨沉积量较大 ,某一部位侵蚀产沙的沉积量与其距离之间有 y=axb的关系。坡面径流直接影响着坡面的输移比 ,当径流深和径流系数较高时 ,输移比接近于 1,否则输移比降
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Full text
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Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources
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Last time updated on 21/09/2018