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引用本文:潘继征,李文朝,陈开宁.滇池东北岸生态修复区的环境效应——Ⅱ.污染净化效应.湖泊科学,2006,18(6):578-584. DOI:10.18307/2006.0604
PAN Jizheng,LI Wenchao,CHEN Kaining.A Study on the environmental effect in the zone of restoration of aquatic plants at the northeastern Dianchi Lake:II. the effect on removing the pollutants. J. Lake Sci.2006,18(6):578-584. DOI:10.18307/2006.0604
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滇池东北岸生态修复区的环境效应——Ⅱ.污染净化效应
潘继征, 李文朝, 陈开宁
中国科学院南京地理与湖泊研究所. 南京210008
摘要:
研究了滇池东北沿岸带生态修复区去除水体中污染物和营养盐的能力.对修复区在重富营养水体迎风岸、无陆源污染情况下通过收获水生植物和促进悬浮物沉降方式去除的湖泊内源污染物质进行了定量的监测分析.结果显示,修复区对外来的悬浮物质具有强大的凝集、固定作用,植被区内每平方米湖面平均年沉积量达118.9 kg(千重),其中的氮、磷、有机碳含量分别达120 g/(m2·a)、70 g/(m2·a)、1080 g/(m2·a):修复区内的底质环境得到明显改善,表层沉积物中氮和有机碳含量比原初提高了4倍以上;修复区内水生植被具有极高的生产能力,仅2002年修复区就收割打捞水生植物113t(干重),由此去除氮、磷分别为30.0 g/(m2·a)和4.8 g/(m2·a).因此,沿岸带生态修复完全可以作为湖泊内源污染净化的一项工程措施在滇池东北沿岸或类似重污染水体推广应用.
关键词:  滇池  沿岸带  十态修复  污染净化
DOI:10.18307/2006.0604
分类号:
基金项目:科技部重大项目“滇池污染治理技术研究”(K99-05-35-01);中国科学院知识创新工程领域前沿项目(CXNI-GLAS-A02-04)共同资助.
A Study on the environmental effect in the zone of restoration of aquatic plants at the northeastern Dianchi Lake:II. the effect on removing the pollutants
PAN Jizheng, LI Wenchao, CHEN Kaining
Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, P. K. China
Abstract:
The effects of removing the pollutants by aquatic plants in ihe resloration zone in the norlheasleni of l)i-anohi Lake were invesligated in ihis paper. The volume of the pollulanls removed from the lake by the aqualir planl harvesting and the sedimention had also been estimated. The result showed that the restoration zone had a remarka-hle accelerative effecl on silting-up of the resloration. In the whole resloration zone,the average seilinienlation flux was 118.9 kg/(m2? a). There fore it means about 120 g/(m2? a) TN,70 g/(m2?a) TP ami 1080 g/(m2?a) TOC can be removed from lake. The situation of ihe sedimention in ihe zone has been improved a U't, as ihe roii-centration of TN and TOC in the surface sedimenl was 4 times as high as before. The amount of harvesftMl aquatic* plants was aboul 113000 kg in 2002,which means that 30.0 g/(m2?a) TN and 4. 8 g/(m2?a) TP were vemove;! from lake. Therefore, il can be concluded that the restoration of aquatic plants in the littoral may be used as an effective engineering measure for lakes pollution control especially the algae bloom control at the norl}i(jasU?rn Diaiuhi Lake, and in other severely polluted waler bodies.
Key words:  Diamchi Lake  aquatic plants  ecological restoration  removing pollutant
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