水土保持学报2017，Vol.31Issue(6)：39-45,7.DOI:10.13870/j.cnki.stbcxb.2017.06.007
等高反坡阶对昆明市松华坝水源区坡耕地氮、磷流失的影响
Effects of Contour Reverse-slope Terrace on Nitrogen and Phosphorus Loss in Sloping Farmland in the Water Resource Area of Songhua Dam in Kunming City
摘要
Abstract
To study the influence of contour reverse-slope terrace on runoff and sediment production,nitrogen and phosphorus loss in sloping farmland,the loss of runoff,sediment,nitrogen and phosphorus of sloping farmland were monitored from 2009 to 2015 through conducting the standard runoff plots in a typical Yizhe small watershed in Water Source Area of Songhua Dam in Kunming City.The results showed that the reduction effect of contour reverse-slope terrace on runoff and sediment was significant,the annual average reduction rate of runoff was 50.64％ and the annual average reduction rate of sediment was 74.99％,the latter was significantly greater than the former.The reduction effect of contour reverse slope terrace on nitrogen,phosphorus in runoff and sediment was significant,it reduced 68.75％ of nitrogen loss and 82.16％ of phosphorus loss every year,the annual reduction rates of total nitrogen in runoff and in sediment were 59.51％ and 76.43％ respectively,and the values for total phosphorus were 64.22％ and 83.73％,respectively.关键词
等高反坡阶/坡耕地/产流产沙/氮、磷流失/削减率Key words
contour reverse-slope terrace/sloping farmland/runoff and sediment production/nitrogen and phosphorus loss/reduction effectiveness分类
农业科技引用本文复制引用
王帅兵,王克勤,宋娅丽,陈雪,王震..等高反坡阶对昆明市松华坝水源区坡耕地氮、磷流失的影响[J].水土保持学报,2017,31(6):39-45,7.基金项目
国家自然科学基金项目(30660037) （30660037）
