【作者】 何丙辉； 陈晓燕； 肖福彬； 张吉明；

【Author】 HE Bing-hui,CHEN Xiao-yan,XIAO Fu-bin,ZHANG Ji-ming(College of Resources and Environment, Southwest Agricultural University, Chongqing 400716,China;Water Conservancy Bureau of Bishan County, Chongqing 402760, China)

【机构】 西南农业大学资源环境学院； 璧山县水利局；

【摘要】 采用自然坡面水土流失监测方法,对璧山县水土保持生态修复过程中的土壤侵蚀与养分动态进行研究。结果表明:生态修复时间对土壤侵蚀有较大影响,生态修复时间长达15年的坡耕地,在暴雨条件下,径流系数和土壤侵蚀量分别为0.2和1.1 t/hm2;生态修复时间1年的坡耕地,同样条件下径流系数和土壤侵蚀量分别达到0.68和11.6 t/hm2;不同监测点侵蚀泥沙中养分含量无显著差异,但在降雨强度很大的情况下,侵蚀泥沙中养分含量有一定幅度的增加。更多还原

【Abstract】 A study on soil erosion and soil nutrient during the process of ecological restoration was made in Bishan county by using erosion monitoring method of natural sbpe. Results show that the period of ecological restoration has a great influence on soil erosion, the runoff coefficient and sediment amount are 0.2 and 1. It/hm2 under intensive rainfall on sloping land after 15 years natural restoration! Meanwhile the runoff coefficient and sediment amount are 0.68 and 11.6t/hm2 under intensive rainfall on sloping land after one year natural restoration. The nutrient content in sediment shows no significant difference in different erosion monitor plot, but the nutrient content has a increasing tendency while rainfall intensity increases.更多还原