摘要
将鱼、贝、植物组合成3种浮岛生态系统,对上海市黄浦江支流白莲泾污染治理和生态修复,效果明显。结果表明:银纹金线蒲+鲢鳙鱼+三角帆蚌组合对总氮去除率60.7%,总磷去除率43.7%,高锰酸盐去除率35.0%,叶绿素-a降低38.2%;血草+鲢鳙鱼+三角帆蚌组合对总氮去除率55.2%,总磷去除率37.2%,高锰酸盐指数去除率42.5%,叶绿素-a降低44.3%;菖蒲+鲢鳙鱼+三角帆蚌组合对总氮去除率55.1%,总磷去除率29.7%,高锰酸盐指数去除率28.3%,叶绿素-a降低26.0%。总体上,3种浮岛生态系统能将水体总磷从Ⅲ类达到至Ⅱ类;总氮从劣Ⅴ类达到至Ⅳ类;高锰酸盐指数从Ⅳ类达到至Ⅲ类。鱼、贝、植物组合的浮岛生态系统生态效应优于单一生物因子的生态效应,该系统内生物多样性较丰富,生长良好,生态景观性明显。
An artificial floating-island ecosystem including plants,fishes and shellfishes was used for water quality management and ecological restoration in Bailianjing River,Shanghai. Results showed that removal rate of TN,TP and CODMn was 60.7%,43.7% and 35.0% and chlorophyll-a decreased by 38.2% by Acorus gramineus Var. pusillus＋filter-feeding fishes ＋ Hyriopsis cumingii （Lea）system. Removal rate of TN,TP and CODMn was 55.2%,37.2% and 42.5%,and chlorophyll-a decreased by 44.3% by Imperata cylindrical Red Baron ＋ filter-feeding fishes ＋Hyriopsis cumingii（Lea） system. Removal rate of TN,TP and CODMn was 55.1%,29.7% and 28.3% and chlorophyll-a decreased by 26.0% by Acorus calamus Linn ＋ filter-feeding fishes ＋ Hyriopsis cumingi（iLea）system. On the whole,the artificial floating-island ecosystem can enhance standard of TP from Grade III to II,TN from inferior Grade V to IV and CODMn from Grade IV to III. Results of water treated by combined artificial floating-island ecosystem are more efficient than single species of ecological system. Number of the organism is on the rise and improving the landscape of the water.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2010年第5期6-11,共6页
Environmental Science & Technology
基金
国家科技部项目(05ba908b23)
上海市科委重点项目(05dz05823)
上海市重点学科建设项目(S30701)
关键词
鱼
贝
植物
浮岛
白莲泾
污染治理
生态修复
fish
shell
plant
floating island
Bailianjing River
pollution control
ecological remediation
