Experimental Study on Non-point Source Pollution of Main Farmlands in the Chaihe Reservoir Watershed
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Abstract:
In order to investigate the characteristics of non-point source pollution from three kinds of farmlands, including rice field, corn field, and seedlings field, a series of rainfall-runoff experiments were conducted in the three experimental fields of the Chaihe Reservoir Watershed with close location and similar soil type. The yield characteristics and impact factors of non-point source pollution from these fields were analyzed using the rainfall and runoff data from the monitoring rainfall events. The results showed that the event mean concentrations (EMCs) of different land use fields vary under the same rainfall conditions, and the EMCs of the same land use field can also be quite different under different rainfall conditions. Land use type, precipitation characteristics, and fertilizer application play important roles in affecting the non-point source pollution.
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