Nutrient loss is sensitive to land cover changes and slope gradients of agricultural hillsides: Evidence from four contrasting pond systems in a hilly catchment
Agricultural Water Management(2020)
摘要
•Long-term water quality dynamics in four contrasting pond systems were revealed.•N levels showed an increase by a factor of five once the land cover was changed.•N & P loss is sensitive to the slope gradients of the cultivated hillsides.•Forests and grasslands are crucial in reducing N & P loss from the hillsides.•An integrated management strategy is needed to reduce N & P loss in hilly regions.
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关键词
Pond,Water quality trends,Taihu lake,Trend decomposition,Agricultural expansion,Hillslopes
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