摘要
以黄土高原南部 3～ 15°缓坡耕地为对象 ,以彬县、永寿、西峰、黄龙、耀县、淳化 149场侵蚀性降雨和 530组径流产沙资料为样本 ,在侵蚀能量特征及能量分级研究的基础上 ,着重阐述了侵蚀能量对产沙、产流的作用及降雨、径流能量的交互作用。指出降雨动能对侵蚀产沙、产流的直接作用均表现为线性增函数关系 ;径流能量对侵蚀产沙的直接作用表现为幂函数关系 ,其侵蚀程度更为剧烈。运用通径分析方法研究得出 :直接作用下 ,降雨动能作用大 ,然而经过相互作用后的总效应则是径流能量作用显著。
Experimental plots were selected in the gentle slope lands (3～15°) of six counties,including Bingxian,Yongshou, Xifeng,Huanglong,Yaoxian and Chunhua where are in the south loess plateau.In there plots 149 data of rainfall and 530 data of runoff were recorded. On the basis of characterstic and classification of erosive energy, effects of the erosive energy producing runoff and sediment, and interaction between rainfall and runoff energy were discussed. The Results showed that a linear ralations between the kinetic energy of rainfall and sediment or runoff was obtained. Relation between runoff enery and sediment was expressed as power function.The effect of runoff ecergy on sediment or runoff was more than that of rainfall energy.
出处
《水土保持学报》
CSCD
北大核心
2000年第z1期83-86,共4页
Journal of Soil and Water Conservation
关键词
侵蚀能量
产沙特征
缓坡耕地
黄土高原南部
erosive energy； sediment produced characteristics； gentle slope land； south loess plateau
