水土保持学报2011，Vol.25Issue(1)：30-33,4.
三峡库区紫色土旱坡地不同坡度土壤磷素流失特征研究
Study on Phosphorus Loss Characteristics from Different Slopes in Purple Soil Sloping Upland of Three Gorges Reservoir Region
摘要
Abstract
Purple soil sloping upland of Three Gorges reservoir region was selected in a case study and using field runoff observation method to study the P loss characteristics from different slopes. The results indicate that surface runoff and erosion increase with slope add to, and the amount of runoff and sediment is the first increase and then decrease, and finally stabilized. Surface runoff and soil erosion and sedimentation in the loss of P showed the trend of 17°＞9°＞4°. In surface runoff, the loss amount of particulate P was 1.50～1.51 times than water-soluble P. Total P adsorbed in the sediment is the main way of loss, the loss amount of P takes up of 85.0％～94. l％ in total loss amount of P. The results of the Three Gorges reservoir area provide theoretical basis for the management of P.关键词
地表径流/侵蚀泥沙/坡度/磷Key words
surface runoff/ erosion and sedimentation/ slope/ phosphorus分类
农业科技引用本文复制引用
黄利玲,王子芳,高明,季轶群..三峡库区紫色土旱坡地不同坡度土壤磷素流失特征研究[J].水土保持学报,2011,25(1):30-33,4.基金项目
国家科技支撑计划"沿三峡水库(重大工程区)农业面源污染防控与综合治理技术研究"(编号:2007BAD87B10 2008BABA7B09) （重大工程区）
西南大学生态学重点学科"211工程"建设项目资助的部分内容 （）
