城边流域的管理通常采用综合模拟的方案来评估土地利用活动对水体污染负荷的影响。
Urban fringe watershed management often requires the use of integrated modeling procedure to evaluate the effects of land use and practices on pollutants loading to water bodies.
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。
The load composition of water pollution has been changed obviously with the effectively control on point source pollution in recent years.
在控制污染负荷排放的同时，也要保证河流基本流量，提高水体自净能力，改善渭河水体的污染现状。
To improve the self-purification ability and pollution situation of river water, control the pollution load and ensure the river basic flow are two important ways.
生物填料具有不受河道水体透明度，悬浮杂质及不可预见污染负荷冲击等因子限制的特点。
Bio-filling has its characteristic of impregnable by water transparency, suspended materials and unpredictability pollution impact.
现代沉积物是湖泊营养盐和污染物的重要储藏库，在一定条件下，这些内源污染负荷可能成为水体富营养化的主导因子。
The modern sediment is an important storehouse of the nutrient salt and pollutant in lakes. Under proper conditions, these internal contamination load sources can cause the eutrophication of lakes.
水体污染加剧，水环境质量日益恶化，迫切要求建立一个能够反映区域总体状况的污染负荷模型，这对流域水资源规划及调度具有重大意义。
With the deterioration of water environment increasingly, it is urgent to found a pollution load model which can image the whole status in a district.
研究结果表明，当前各类农业非点源污染对水体的污染负荷贡献率为：畜禽粪尿43.81%，生活污染29.91%，农田径流和渗漏22.43%精养鱼塘3.85%。
Results indicated that the contribution of brute manure, domestic pollution source, runoff and food-supplied fishpond to water pollution load was 43.81%, 29. 91%, 22. 43%and 3. 85%, respectively.
研究结果表明，当前各类农业非点源污染对水体的污染负荷贡献率为：畜禽粪尿43.81%，生活污染29.91%，农田径流和渗漏22.43%精养鱼塘3.85%。
Results indicated that the contribution of brute manure, domestic pollution source, runoff and food-supplied fishpond to water pollution load was 43.81%, 29. 91%, 22. 43%and 3. 85%, respectively.
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