摘要
蚯蚓作为分解者在生态环境中有着重要的作用,将蚯蚓引入人工湿地,可以延长人工湿地的食物链,增加人工湿地食物网的丰富度,提高人工湿地的净化能力;蚯蚓可作为一个有效生物指标适时监控人工湿地的运行状况;蚯蚓能改变人工湿地中物质的循环途径,使污染物质脱离人工湿地系统而进入其他的循环系统,以降低人工湿地的污染负荷.优化的蚯蚓人工湿地依靠基质、植物、蚯蚓和微生物联合作用实现污水的高效净化,并能解决人工湿地存在堵塞、退化等问题,提高人工湿地运行的稳定性.
As an important character in ecological environment,the earthworm could be put into constructed wetland system to treat wastewater.The earthworm in constructed wetland system could prolong food chain and enrich food web,resulting in purifying capacity expansion.The earthworm could also be seen as a useful biological index,being used to monitor operation condition of constructed wetland.The matter cycling pathway of constructed wetland system could be changed by earthworm,which decrease system pollution load by removing pollutants to other cycling system.The earthworm optimized constructed wetland system could enhance purifying capacity by the coupled effect of substrates,vegetation,earthworm and microorganism.Earthworm could solve some problems in constructed wetland such as the substrate clogging,vegetation degradation and operation instability.
出处
《南京信息工程大学学报（自然科学版）》
CAS
2010年第3期242-247,共6页
Journal of Nanjing University of Information Science & Technology（Natural Science Edition）
基金
国家自然科学基金项目(40901257)
南京信息工程大学科研基金(S810817001)
关键词
蚯蚓
人工湿地
系统
优化
earthworm
constructed wetland
system
optimization
