水土保持研究2013，Vol.20Issue(4)：91-94,98,5.
云蒙湖流域非点源磷污染时空变化研究
Spatio-temporal Change of Non-point Source Phosphorous Pollution in Yunmeng Lake Watershed
摘要
Abstract
Export coefficient mode was used to analyze the spatio-temporal changes of the non-point source (NPS) phosphorous pollution based on GIS & RS.The result indicates that the TP load caused by land use increased from 100.98 t in 1986,to 123.57 t in 1995,to 144.36 t in 2010; as far as spatial distribution of the TP load is concerned,the high phosphorous load mainly distributes in the flat River Valley,because there are many farm lands distributed in that region.As for land-use type,different land uses have different contributions to the total non point source pollution load,the TP from farm-land increased year by year,the contribution rate,is 89.5％ in 1986,91.35％ in 1995 and 92.02％ in 2010,the load of the forest-land and the grass-land had a little change,but the contribution rate decreases gradually,the residential load increases by a large margin,however,the contribution rate is very little.In the term of the sub-basin,the higher the proportion of the farm-land is,the more the TP load increases,the high TP load of the sub-basin expands from the eastern and central region to the whole watershed.关键词
输出系数模型/云蒙湖流域/非点源污染/土地利用结构/地理信息系统Key words
export coefficient model/ Yunmeng Lake watershed/ non-point source pollution/ land-use structure / GIS分类
资源环境引用本文复制引用
孟晓云,于兴修,泮雪芹..云蒙湖流域非点源磷污染时空变化研究[J].水土保持研究,2013,20(4):91-94,98,5.基金项目
国家自然科学基金(41101263) （41101263）
山东省科技攻关项目(2011GGH21704) （2011GGH21704）
临沂市重大科技创新项目(201211027) （201211027）
