生态与农村环境学报2016，Vol.32Issue(3)：458-465,8.DOI:10.11934/j.issn.1673-4831.2016.03.019
太湖流域跨界区农业面源污染特征
Characteristics of Transboundary Non-Point Source Agricultural Pollution in the Taihu Valley
摘要
Abstract
To illustrate the transboundary non-point source agricultural pollution in the Taihu valley, first of all, COD, TN and TP loads in the pollution were figured out with an export coefficient model by calculating the loads separately in the three major contributors of the pollution, i.e. domestic sewage and household refuse from rural population, agricultural run-off and waste from livestock keeping, and temporal and spatial variations of the loads were characterized;Then, discharge intensities of the loads in various regions of the transboundary area were evaluated with the extremum method and the mean variance weighting method. Results show that during the years from 2010 to 2013, the COD, TN and TP loads on the whole were on a declining trend;during the four years, high COD load appeared in Huzhou and Jiaxing and high TN and TP loads in Suzhou, Huzhou and Jiaxing;livestock keeping was the main contributor of the three loads, explaining 80% of the total load. Evaluation of discharge intensity of the loads indicates that the comprehensive index of the non-point source agricultural pollution per unit GDP was 0. 2176, 0. 2402, 0. 2364 and 0. 2222, respectively, for the four years, which did not show any rule of variation, while the comprehensive index of the non-point source agricultural pollution per unit ar-ea was 0. 4078, 0. 2899, 0. 2892 and 0. 2816, which obviously followed a declined trend.关键词
太湖流域跨界区/农业面源/污染负荷/入水强度Key words
transboundary area in the Taihu valley/non-point source agricultural pollution/pollution load/discharge intensity分类
资源环境引用本文复制引用
彭兆弟,李胜生,刘庄,杨汉培,李维新,庄巍,李文静,杭小帅..太湖流域跨界区农业面源污染特征[J].生态与农村环境学报,2016,32(3):458-465,8.基金项目
国家水体污染控制与治理科技重大专项(2012ZX07506-007) （2012ZX07506-007）
江苏省自然科学基金(BK2011081) （BK2011081）
