坡地土壤侵蚀与氮素迁移转化规律研究  

Research on soil erosion and migration-transformation rule of nitrogen in sloping lands

作　　者：钱峰[1] 丁文峰[1] 刘静君[1] 

机构地区：[1]长江科学院水土保持研究所,湖北武汉430010

出　　处：《人民长江》2013年第24期69-71,90,共4页Yangtze River

基　　金：国家科技重大专项专题"水库型流域水质安全面源污染特征分析"(2012ZX07503-002-03);国家自然科学基金资助项目"紫色土坡耕地壤中流养分输出机制及模型研究"(40901135)

摘　　要：研究坡地土壤氮素迁移转化的过程具有重要的科学理论意义和工程应用价值。结合目前国内外研究现状,论述了坡地土壤侵蚀与氮素迁移转化的过程,以及降雨、土壤特性、地表状况、土地利用方式等因素对坡地土壤氮素迁移转化规律的影响。分析得出,坡面地表径流、壤中流和侵蚀泥沙为坡地土壤氮素迁移转化的主要途径。最后围绕坡地土壤氮素迁移转化模型展开了探讨。It is of theoretical significance and engineering application value to study the migration and transformation of soil ni- trogen in the sloping lands. By comprehensively analyzing the current research advance at home and abroad, the paper presents mechanism of soil erosion as well as the migration and transformation of soil nitrogen, also discusses the several factors that can exert influences on the rule of migration and transformation of soil nitrogen, including rainfall, soil properties, surface condition and the way of land use. It is found that surface runoff, interflow and sedimentation are the main ways of nitrogen migration and transformation. Finally, different models for nitrogen migration and transformation in the sloping lands arc discussed.

关 键 词：土壤侵蚀 氮素迁移转化 模型模拟 坡地 

分 类 号：S157[农业科学—土壤学]