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引用本文:陈灿,王国祥,朱增银,尹大强.城市人工湖泊水生植被生态恢复技术.湖泊科学,2006,18(5):523-527. DOI:10.18307/2006.0514
CHEN Can,WANG Gouxiang,ZHU Zengyin,YIN Daqiang.Study on eco-remediation in urban-ponds:restoring submerged macrophytes. J. Lake Sci.2006,18(5):523-527. DOI:10.18307/2006.0514
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城市人工湖泊水生植被生态恢复技术
陈灿1, 王国祥2, 朱增银1, 尹大强1
1.南京大学环境学院, 南京210093;2.南京师范大学地理科学学院南京210097
摘要:
本实验在藻类响应型城市人工湖泊中,用围格恢复沉水植被,修复退化的生态系统.结果证明:夏季透明度<0.4 m时,应用凤眼莲可快速改善透明度,0.30盖度的凤眼莲在夏季30-40 d内使水体透明度从不足0.3 m提高到0.6 m以上,并验证了透明度的改善与盖度的正相关程度.通过短期引种漂浮植物调节水体透明度,成功恢复了菹草+伊乐藻群落,透明度较上年同期稳定提高70%,Chl.a浓度降低50%,水体富营养水平下降,有效修复了生态系统.
关键词:  城市人工湖泊  植被恢复  透明度  光补偿深度
DOI:10.18307/2006.0514
分类号:
基金项目:国家“973”项目(2002CB412307)资助
Study on eco-remediation in urban-ponds:restoring submerged macrophytes
CHEN Can,WANG Gouxiang,ZHU Zengyin,YIN Daqiang
School of the Environment, Nanjing University, Nanjing 210093, P. R. China 2:School of Geographic Science, Nanjing Normal University, Nanjing 210097, P. R. China
Abstract:
In allusion to the algal eutrophlcation problem of urban shallow lakes, four enclosures were set up in an urban eutrophic pond of Nanjing City to restore submerged macrophytes communities. Results showed that Eichhor-nia crassipes can be used to improve the transparency of water body, and its effect was relative to its coverage when its coverage was less than 0.3m. With the coverage no less than 0. 3 Eichhomia crassipes can make transparency improved from lower than 0.3m to higher than 0.6m during 30 to 40 days in summer. The submerged vegetation was availably restored after transparency improved to higher than 0.6m. Compared to the period without submerged vegetation,the transparency of the water body was enhanced 70% and Chi.a concentration were reduced 50% correspondingly.
Key words:  Urban ponds  vegetation restoration  transparency  light compensation depth
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