Abstract
Taihu Lake is located at the center of Changjiang delta region, the Lake and its effluent rivers are important water sources for 40 million around inhabitants and rapidly increasing industrial factories in Shanghai, Ji-angsu and Zhejiang. The pollutants originate mainly from acidy rain, home sewage of the vast number of inhabitants, livestock manure, agricultural fertilizers & pesticides applied over fields in the drainage basin, and the industrial sewage. Due to the kinds of pollutants, the Lake water is getting highly eutrophic, with frequent blooms of blue-green algae. Compared with point-source pollutants, diffuse pollution is much com-plicated and difficult to control. Thus combating non-point pollution (NPP) is paid much great attention. Based on analysis on source-sink of NPP in Taihu Lake basin, it is concluded that the function of forests on NPP control is multiple and important by both source reduction and sink expansion. The primary objective of planting trees through constructing forested wetlands and establishing riparian forest buffers is to control soil & water erosion, decrease agrochemicals application, and improve farming conditions in the region of Taihu Lake basin. Moreover forests help to intercept acidy rain, protect streambanks, uptake nutrients, hold up pollutants and provide habitat for wildlife.
Highlights
The Taihu Lake basin has an area of 36 500 km2, located in three provinces and one municipality
Taihu Lake is located at the center of Changjiang delta region, the Lake and its effluent rivers are important water sources for 40 million around inhabitants and rapidly increasing industrial factories in Shanghai, Jiangsu and Zhejiang
The pollutants originate mainly from acidy rain, home sewage of the vast number of inhabitants, livestock manure, agricultural fertilizers & pesticides applied over fields in the drainage basin, and the industrial sewage
Summary
The Taihu Lake basin has an area of 36 500 km, located in three provinces and one municipality. The Lake has the multifunction of floodwater storage, irrigation, navigation, water supply, aquaculture, and tourism. It is the main drinking water source for 40 million residents for areas such as Wuxi and Suzhou and people in neighboring Shanghai and Zhejiang. The region along Taihu basin was developed very earlier owing to the kind natural conditions (Table 1), which was called “Kingdom of fishing & farming”. The function of forests was significant in controlling non-point source agricultural pollution (NPP) in Taihu Lake basin
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