RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2005, Vol. 14 >> Issue (5): 574-578.

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AN OVERVIEW: DEVELOPMENT OF NUTRIENT TRANSPORT MODELS AT CATCHMENT SCALE

LAI Ge-ying1,2,3, YU Ge1   

  • Received:2004-08-06 Revised:2004-12-29 Online:2005-09-20
  • Contact: LAI Ge-ying

Abstract: Eutrophication is a problem which become widely recognized by scientific community over last a few decades. This has resulted in increased research effort and expenditure on management. Most studies have demonstrated that there is a relative importance of nonpoint source pollution ( NPSP ) in catchments for eutrophication. There are a lot of NPSP models simulating nutrient transport and transformation processes. This paper accounted for watershed interaction processes in general and structure of typical NPSP models, reviewed the research status of the nonpoint source pollution models on watershed scale, analyzed some representative models such as LTHIA, AGNPS, ANSWERS, SWAT, BASINS. Their structures, basic components, functions, and integrated means with GIS were compared. The future development trend of nonpoint source pollution watershed models was analyzed.

Key words: watershed, nonpoint source pollution, nutrients, transport modeling, overview

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