农业非点源污染物在排水沟渠中的迁移机理及输出模型研究

项目名称： 农业非点源污染物在排水沟渠中的迁移机理及输出模型研究

项目编号： No.50879027

项目类型： 面上项目

立项/批准年度： 2009

项目学科： 无线电电子学、电信技术

项目作者： 李强坤

作者单位： 黄河水利委员会黄河水利科学研究院

项目金额： 30万元

中文摘要： 针对我国农业非点源污染日益严重且研究基础薄弱、监测资料少、控制管理等缺乏科学依据的实际情况，本项目以农业非点源污染物在排水沟渠中的迁移作用机理和区域农业非点源污染模型构建为研究对象，着重研究了不同土地利用方式以及排水条件下的农业非点源污染负荷贡献、控制排水条件下减少农业非点源污染物输出负荷、排水沟渠系统中农业非点源污染物的纵向迁移特征、沟渠湿地对农业非点源污染物作用机理等，分析了农业非点源污染物在水体－沉积物－水生植物－岸边植被系统内的相互作用机理以及水体、底泥沉积物的酸碱度pH、溶解氧DO、排水沟渠中的水深、流速、温度等对此作用的影响，同时结合我国现状条件下农业非点源污染物产移特征，将农业非点源污染模型划分为"源"、"汇"模块分别构建，形成了完整的区域农业非点源污染计算模型，并以黄河上游青铜峡灌区为例进行了模型验证和应用。项目研究成果可为我国进一步的农业非点源污染负荷定量化研究以及农业非点源污染的控制和管理提供科学依据。

中文关键词： 农业非点源污染；排水沟渠；迁移机理；数学模型；负荷

英文摘要： According to the agricultural non-point source pollution is increasingly serious and the research base is weak, less monitoring data, such as lack of management control of the scientific basis of the actual situation, agricultural non-point source pollutants of the transfer-effect mechanism and regional agricultural non-point source pollution modeling l in the drainage ditches is used as the study in the project, Here, focusing on agricultural non-point source pollution contribution load under the different land use and drainage conditions; under the conditions of controlled drainage to reduce agricultural non-point source pollutant load of quantitative analysis, drainage ditch system in agricultural non-point source pollutants in the vertical migration of , ditches, wetlands, agricultural non-point source pollutants such mechanism, Analysis of the agricultural non-point source pollutants in the water - sediment - aquatic plants - the shore vegetation interaction mechanism within the system and Water, sediment deposits acidity ph, dissolved oxygen, drainage ditches in depth, velocity and temperature of the impact of this role. Simultaneously，conditions combined with the status quo of China's，the union agriculture nonpoint source pollution's production and the migration characteristic, divide the agricultural nonpoint source pollution overall model into "the fountainhead" and "the collection" module, constituted the complete agricultural nonpoint source pollution load model. The Qingtongxia Irrigation District in the upper reaches of the Yellow River as an example for model validation and application. A result of the project provides a scientific basis of further agricultural non-point source pollution load of quantitative research and agricultural non-point source pollution control and management for China's.

英文关键词： agricultural non-point source pollution; draining canal ;migration mechanism；mathematic model; pollution load;