Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《China Environmental Science》 2018-03
Add to Favorite Get Latest Update

Ecological security assessment of agricultural development watershed considering non-point source pollution

OUYANG Wei;JU Xin-yan;GAO Xiang;HAO Fang-hua;GAO Bing;State Key Laboratory of Water Environment Simulation,School of Environment,Beijing Normal University;  
In anagricultural development watershed,the ecological security will change with the development.After taking NPS(non-point source pollution) into account,this research focuses on Naoli River.Recently,the material balance of the basin has been broken,and the ecological environment has been destroyed,because ofthe agricultural development,and the changes of land use.Then on account of the excessive application of fertilizer and pesticide,the nutrients nitrogen(N) and phosphorus(P) are getting into the water in quantity,which brings serious environmental problems.In order to get the security assessment considering NPS,we need know the detailed N、P loads and habit quality.Based on the SWAT model and In VEST(integrated valuation of ecosystem services and tradeoffs) model,we quantitatively estimated the nutrient delivery ratio and the habit quality of Naoli River in 2000,2006 and 2014.With the results,we get the response of N and P loads and habit quality to spatial and temporal variation.Thenconsidering it,we make the ecological security assessment of Naoli River Basin,and then effective policies and recommendations are discussed.
【Fund】: 国家重点研发计划项目(2016YFD0800500);; 国家自然科学基金优秀青年科学项目(41622110)
【CateGory Index】: X826
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved