摘要
于2010年4月—2011年2月逐月对上海大莲湖退渔还湖生态修复工程跟踪调查与监测,对工程前后大莲湖水环境理化指标进行分析比较,评估工程修复之后大莲湖水环境的改善效果。生态修复区内TP、TN、NO3--N、NH4+-N和COD比工程区外对照点分别降低了62.5%、72.2%、92.9%、63.3%和8.9%,溶解氧提高了11.1%,叶绿素a、浮游植物丰度和浮游植物生物量分别比工程区外降低了47.7%、15.3%和48.0%;生态修复工程区综合水质标识指数达到国家Ⅲ类水标准,而工程区外为Ⅳ类水;出水水质明显优于进水水质。修复工程区浮游植物区系得到良好改善,水生态系统具备了一定的自净能力。
From April 2010 to February 2011, a monthly tracking survey and monitoring was conducted on the ecological restoration project ＇returning fishery to lake＇ of Dalian Lake in Shanghai, with the physical and chemical indicators of water environment before and after the im plementation of the engineering project compared, aimed to assess the improvement effects of the project on the water environment. As compared with those outside the ecological restoration area, the concentrations of total phosphorous, total nitrogen, NO3--N, and NH4＋-N and the COD in the ecological restoration area decreased by 62.5%, 72.2%, 92.9% , 63.3%, and 8.9% , respectively, while the DO increased by 11.1%. In addition, the concentration of chlorophyll a and the abundance and biomass of phytoplankton in the restoration area decreased by 47.7% , 15.3%, and 48.0% , respectively. The integrated water quality identification index of the ecological restoration area was of National class Ⅲ, while that of the control point was of class IV, and the outlet water quality of the ecological restoration area was obviously better than the inlet water quality. After the implementation of the restoration project, the phytoplankton flora in the restoration area was improved, and the water ecosystem bad definite self-purification capacity.
出处
《生态学杂志》
CAS
CSCD
北大核心
2012年第12期3167-3173,共7页
Chinese Journal of Ecology
基金
世界自然基金会(WWF)项目(CN0087901和1000078-100559)
国家科技重大专项(2012ZX07204004)资助
关键词
生态修复
水质
浮游植物
标识指数法
ecological restoration
water quality
phytoplankton
marked index method.
