长江流域资源与环境 >> 2007, Vol. 16 >> Issue (1): 26-30.

• 自然资源 • 上一篇    下一篇

三峡库区非点源氮磷负荷研究

梁常德|龙天渝|李继承|刘腊美   

  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-01-20

IMPORTATION LOADS OF NON POINT SOURCE NITROGEN AND PHOSPHORUS

LIANG Changde, LONG Tianyu, LI Jicheng, LIU Lamei   

  • Received:1900-01-01 Revised:1900-01-01 Online:2007-01-20

摘要:

掌握非点源污染形成的机理和变化规律是控制和治理非点源污染的关键。三峡水库非点源污染物来源范围广,每年随上游来水输入库区的非点源污染物成为三峡入库非点源负荷的主要部分。为研究三峡入库非点源污染物负荷变化规律,以SLURP水文模型和输出系数法为基础,建立了长江重庆寸滩断面以上流域的非点源污染负荷模型,模型在模拟计算1996~2002年寸滩断面入库非点源TN年负荷和非点源TP年负荷时,除1998年非点源TP负荷计算误差高于50%外,其它各年非点源TN负荷和TP负荷计算误差基本上小于30%,具有较好的模拟计算效果。该模型的建立和应用将为流域的有关管理部门提供该流域非点源污染控制和治理的决策依据。

关键词: 非点源污染负荷, SLURP水文模型, 输出系数法

Abstract:

To understand the formation and change of non point source pollution is the first important step to controll and manage non point source pollution. There is a wide range of non point source pollutants in the Three Gorges Reservoir. Every year, nonpoint source pollutants discharged into rivers from the upper reaches contribute the major part of non point source pollutants in the Three Gorges Reservoir. In order to study the pattern of change in non point source pollutants in the Three Gorges Reservoir, the model of non point source pollution load from the upper basin of Chongqing Cuntan section of the Yangtze River was established on the basis of the SLURP model and the Export Coefficient Approach. At last, using the established model, nonpoint source TN and TP annual load from upper basin of Cuntan section were calculated and simulated for the period from 1996 to 2002. Except the more than 50% calculation error for non point source TP load in 1998, all other calculation errors were less than 30%. It is considered that the model can provide a good fit to the observed data, and that the established model for non point source pollution and its application in the Yangtze Basin will be valuable for the management and control of nonpoint source pollution, and may form a base for making policies on pollution control.

Key words: non point source pollution load, SLURP hydrological model, the Export Coefficient Approach

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