But the main contributor of BOD was point source pollution.
而BOD的主要贡献者则是点源污染。
And agricultural non-point source pollution is the top priority.
而农业面源污染又是重中之重。
Soil erosion and non point source pollution are two serious environmental issues.
土壤侵蚀与非点源污染是两大重要的环境问题。
Many studies show that wetlands can control the non-point source pollution effectively.
国内外许多研究表明，自然湿地能有效地控制非点源污染。
With the effective control of source pollution, non-point source pollution becomes more outstanding.
随着点源污染控制加强，非点源问题更加突出。
SWAT model was used to evaluate agricultural non - point source pollution of Daning River watershed.
以大宁河流域为研究区域，应用SWAT模型进行了流域农业非点源污染负荷的模拟计算。
Through the typical investigation in Honghu City, the cause of forming non-point source pollution was analyzed.
通过对洪湖市的典型调查，分析了农业非点源污染的形成原因，探讨了防治非点源污染的措施。
So the agricultural non-point source pollution has been considered as the main pollution source of eutrophication.
因此农业面源污染已被视为水体富营养化的主要污染源。
Soil phosphorus as agricultural non-point source pollution is one of the main factors which led to water pollution.
土壤磷素的农业非点源污染是导致水体污染的最主要原因之一。
Soil phosphorus as agricultural non-point source pollution is one of the main factors which lead to water pollution.
土壤磷素的农业非点源污染是导致水体污染的最主要的原因之一。
The result indicated that eutrophication would not be induced in Baiguishan Reservoir without point source pollution.
结果表明，流域内如果没有点源污染，水库不会发生富营养化。
Nutrient export coefficient of land use is an important parameter for constructing model of non-point source pollution.
各种土地利用类型营养盐输出系数是建立非点源污染模型的重要参数。
It may conclude that the drainage control plays a significant role in water saving and non-point source pollution reduction.
因此，控制排水措施具有节约灌溉用水和减少农业非点源污染的重要意义。
The study on watershed distribution of agricultural non - point source pollution is important to improve environmental quality.
农业非点源污染的流域分配研究对于提高环境质量具有重要的现实意义。
The control advices were put forward based on the economy and countermeasure analysis of agricultural non-point source pollution.
在简要地进行了农业面源污染的经济与对策分析的基础上，提出了控制农业面源污染的意见与建议。
The type, source and harm of pollutants of urban non-point source pollution and its influence on the receiving water are analyzed.
对城市面源污染物的种类、来源和危害，以及对受纳水体的影响两方面综合进行分析；
Agricultural non-point source pollution was take up 57%> 43% of total N&P pollution loading in Dasong river watershed respectively.
大嵩江流域非点源总氮、总磷污染负荷占整个流域污染负荷的57％、43％。
Nitrogen leaching from a sloping land is one of the important causes of soil degradation and agricultural non-point source pollution.
坡地氮素淋溶是导致坡地土壤质量退化和农业非点源污染的重要原因之一。
This model can provide scientific methods for urban water environment programming and non-point source pollution control and management.
该模型可为城市水环境规划、面源控制和管理研究提供科学手段。
The load composition of water pollution has been changed obviously with the effectively control on point source pollution in recent years.
随着对水体点源污染的有效控制，水体负荷结构发生了明显的变化。
So we should designate sanitary zone of water source, control soil and water loss and non - point source pollution to protect water source.
建议采取划定水源保护区、加大水土流失治理力度、控制面源污染等措施保护水源。
With the control progressively given to urban point source pollution in Shanghai, the non-point source pollution has been getting more attention.
随着上海城区点源污染逐步得到控制，面源污染已受到高度关注。
Agricultural non point source pollution is arising more and more attentions as one of the major causes leading to deterioration of water quality.
农业非点源污染作为引起水质恶化的主要原因之一，已越来越受到人们的重视。
The rainwater is one of carriers of pollutants in urban-environment, and the polluted rainwater has been important urban non-point source pollution.
雨水是城市环境中各种污染物的载体之一，受污染的雨水已经成为重要的城市非点源污染。
The research on non-point source pollution based on single event is comparatively mature, but there are few studies on continuously modeling in China.
基于单场洪水的非点源污染研究已相对成熟，而有关非点源污染连续模拟的研究在我国相对较少。
The model was applied to Hanyang District, Wuhan to study urban non-point source pollution control technology, and satisfactory results were achieved.
所建模型已成功地应用于武汉市汉阳地区城市面源污染控制技术研究，获得了满意的结果。
The overall schemes of research are introduced briefly and the research approaches of the non-point source pollution loads are discussed in this paper.
简要介绍本研究的总体方案，探讨城区地表径流污染、农业地表径流污染、畜禽养殖业污染和大气湿沉降污染的研究方法。
Under the circumstance that point source pollution is basically controlled, non point source pollution has already become an important pollutant source.
在点源污染得到初步控制的情况下，非点源污染已经成为水源地的重要污染源。
Agricultural drainage is one of important contributors of non-point source pollution, and it is difficult to treat in practice due to its dispersed nature.
农田排水是造成农业非点源污染的一个重要来源，由于其具有分散性而难以人为控制。
The water quality of Miyun reservoir is at medium-eutrophication situation, which is mainly caused by the non-point source pollution (NPS) in the watershed.
目前水质处于中等富营养化程度，非点源是主要污染来源，土地利用则是影响非点源的主要因素。
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