Journal
ENVIRONMENTAL MONITORING AND ASSESSMENT
Volume 147, Issue 1-3, Pages 57-64Publisher
SPRINGER
DOI: 10.1007/s10661-007-0097-1
Keywords
Landscape characteristic; Chiachiawan stream; Formosan landlocked salmon; Modeling; Non-point source pollution; Watershed simulation
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Funding
- ShaiPa National Park of Taiwan, Republic of China
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The effects of landscape characteristics on surface water quality were evaluated in terms of land-use condition, soil type and slope. The case area, the Chichiawan stream in the Wulin catchment in Taiwan, is Formosan landlocked salmon's natural habitat. Due to the agriculture behavior and mankind's activities, the water and environmental quality has gradually worsened. This study applied WinVAST model to predict hydrological responses and non-point source pollution (NPSP) exports in the Wulin catchment. The land-use condition and the slope of land surface in a catchment are major effect factors for watershed responses, including flows and pollutant exports. This work discussed the possible variation of watershed responses induced by the change of land-use condition, soil type and slope, etc. The results show that hydrological responses are highly relative to the value of Curve Number (CN); Pollutant exports have large relation to the average slope of the land surface in the Wulin catchment.
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