Dongjiang River is one of the important drinking water source areas in Guangdong province,and the nitrogen and phosphorus losses from the Dongjiang upstream have achieved much concern in recent years. A small catchment of the Shangwan River basin,located in upstream of Dongjiang River,was selected in our study. Using the monitoring dataset in 2011,the parameters of runoff and land use types were derived from SCS model and land use maps,and the runoff-land use typebased non-point source load equations were c...
1引言(Introduction)非点源污染是污染物以广域、分散、微量的形式进入地表及地下水体(Lane et al.,1989),从而导致水体污染.按其来源主要分为农业非点源污染和城市非点源污染,且以农业非点源污染危害最大(Corwin et al.,1997;Thorburn et al.,2003),其中,氮、磷是农业非点源污
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