生态学杂志2012，Vol.31Issue(2)：394-398,5.
珠三角典型稻田生态沟渠型人工湿地的非点源污染削减功能
Non-point source pollution control function of constructed wetland in the ditches of paddy field system in Pearl River Delta
摘要
Abstract
This paper proposed a method of site-specific ecological ditch construction as an avail-able technique for farmland non-point pollution control in Pearl River Delta. A typical paddy field system of Shangzhou Village located at Doumen District of Zhuhai City was selected as a case. The demonstration project was constructed by properly converting original farmland irrigation and drainage system to a well-designed wetland, and the control efficiency was evaluated. The results showed that the removal efficiency of suspended solid (SS) , total phosphorus (TP) , total nitrogen (TN) , chemical oxygen demand (CODcr) , NH_4~+-N, and biochemical oxygen demand after 5 days (BOD5) in the runoff of the paddy field system was 71. 7% , 63.4% , 49. 9% , 26. 6% , 14. 5% , and 11. 6% , respectively, without harming inherent drainage function. The wetland system worked well in reducing nutrient and particulate pollutants, especially for TP and SS, but had no significant effects in reducing organic pollutants. The proposed method of site-specific ecological ditch construction was cost-effective, which reduced the pollution load of the runoff to adjacent water body and improved the farmland landscape, with definite demonstration value for controlling non-point source pollution in Pearl River Delta and in similar regions with developed economy, high population, and scarce land.关键词
非点源污染/人工湿地/生态沟渠/珠江三角洲Key words
non-point source pollution/constructed wetland/ecological ditch/Pearl River Delta分类
资源环境引用本文复制引用
何元庆,魏建兵,胡远安,吴志峰,程炯,刘平,刘晓南..珠三角典型稻田生态沟渠型人工湿地的非点源污染削减功能[J].生态学杂志,2012,31(2):394-398,5.基金项目
国家自然科学基金项目(40871229和41171399)、广东省自然科学基金项目(9151065003000007)和广东省科技计划项目(2010B030900012和2008A020100010)资助. （40871229和41171399）
