水土保持通报2012，Vol.32Issue(5)：136-140,5.
天然降雨下红壤坡地氮磷流失过程与特征分析
Processes and Characteristics of Nitrogen and Phosphorus Losses on Red-soil Sloping Land Under Natural Rainfall
摘要
Abstract
In order to study nitrogen and phosphorus losses on red-soil sloping land,field experiments under three typical natural rain events were performed to investigate the N and P transferring processes and their characteristics in the SWC Ecological Science and Technology Demonstration Park of Jiangxi Province.Results showed that under the condition of natural rainfall,the processes of runoff and sediment on natural slope were not stable and continuous and had one or more peak values,because rainfall intensity was not stable and continuous.The processes of runoff and sediment on natural slope were basically the same for the same rainfall event.The cumulative sediment yield and cumulative runoff with time showed a slight growth and then a rapid growth,and tend to change smoothly.The concentration of phosphorus was lower than that of nitrogen,and changes in P concentration were more stable than those in N concentration.There were nutrition enrichments in eroded sediment,and the N enrichment ratio was lower than the P enrichment ratio under the three rain events.关键词
土壤侵蚀/氮磷流失/天然降雨/红壤坡地Key words
soil erosion/N and P loss/natural rainfall/red-soil sloping land分类
农业科技引用本文复制引用
奚同行,左长清,王伟,王昭艳..天然降雨下红壤坡地氮磷流失过程与特征分析[J].水土保持通报,2012,32(5):136-140,5.基金项目
水利部公益性行业科研专项“水蚀地区坡面水土流失阻控技术研究” （）
国家“十一五”科技支撑项目“闽西中高丘陵区红壤侵蚀快速治理与生态农业技术集成和示范” （）
