ABSTRACT
ABSTRACT: Nonpoint source (NPS) pollution has produced persistent ecological problems for water resources around the world. Lake Dianchi is a typical eutrophic freshwater lake in China. As there has become better control of point site pollution in recent years, NPS pollution is now increasingly associated with worse water quality. Here, we develop an integrated watershed management framework to address water pollution in this region based on a recent NPS pollution survey, systematic analysis, and land use change trends in the basin. The watershed was divided into three zones in term of NPS pollution occurrences and features, as well as into three arenas that integrated land use management and practical instruments of NPS pollution control. In addition, prophylactic zonal eco-designs were outlined to reduce NPS pollution. In general, this holistic approach will help reduce NPS pollution at the watershed scale in highland lakes of similar characteristics.
