摘要
湿地尤其是人工湿地在水环境污染处理方面正在发挥着越来越大的作用,但是对其功能及利用方面仍然存在误区。针对这一现状,笔者从系统地介绍国际上关于湿地的定义以及中国湿地分布状况入手,分析了1949年以来中国人工湿地尤其是稻田面积的变化趋势及其在水环境氮、磷污染防治的效果,指出了目前中国在对人工湿地的认识和利用上的几个常见误区。提出应正确认识人工湿地在水环境污染净化方面的作用,不能简单地将人工湿地作为污水处理厂来使用,特别指出需要保护稻田,重视其作为人工湿地在水环境改善方面的作用。
Wetlands, especially artificial wetlands are playing more and more important roles on water pollution prevention around the world, but there are still some misunderstandings about their functions and usage. According to these phenomena, this article first systematically introduces the concept of wetland worldwide, the change of china’s wetland area since the new China founded, especially the paddy fields’ area, and its function on water pollution （nitrogen and phosphorus for eutrophication） prevention. Then, on the base of the analysis of successive experience, some misunderstanding of wetlands’ functions and usage are noted. The first is that the artificial wetlands should not be used for waste water treatment plant directly, the second, functions of artificial wetland especially for rice fields should be more regarded and strengthened, and the paddy field area should be prevented.
出处
《中国农学通报》
CSCD
2008年第10期512-514,共3页
Chinese Agricultural Science Bulletin
基金
国家科技部973课题"典型污染物在菜地生态系统中累积
转化机理及其对蔬菜品质的影响"(2002CB410806)
国家科技支撑计划"耕地质量分区评价与保育技术及指标体系研究"(2006BAD05B03)
中央级公益性科研院所基本科研业务费专项"互动式技术在作物养分管理中的应用"(2007-18)
关键词
湿地
水环境
稻田
wetland, water environment, paddy field
