华东师范大学学报(自然科学版) ›› 2010, Vol. 2010 ›› Issue (4): 35-43.

• 环境工程 地理学 • 上一篇    下一篇

丽娃河受损退化生态系统的近自然恢复工程及效果分析

李静文1， 施 文1， 余丽凡1， 罗 虹1， 达良俊1,2， 沈昆根3   

  1. 1. 华东师范大学 环境科学系，上海 200062； 2. 华东师范大学 上海市城市化生态过程与生态恢复重点实验室，上海 200062； 3. 上海泽龙生物工程有限公司，上海 201416
  • 收稿日期:2009-04-01 修回日期:2009-08-01 出版日期:2010-07-25 发布日期:2010-07-25
  • 通讯作者: 达良俊

Approxnatural ecological restoration engineering and effectivenessanalysis of degraded Liwa Creek ecosystems

LI Jing-wen1， SHI Wen1， YU Li-fan1, LUO Hong1，
DA Liang-jun1,2， SHEN Kungen2   

  1. 1. Department of Environment Science, East China Normal Uiversity, Shanghai 200062, China; 2. Shanghai Key Laboratory for Ecology of Urbanization Process and Ecorestoration， East China Normal University， Shanghai 200062， China； 3. Shanghai Zelong Biotechnology Co.， Shanghai 201416， China
  • Received:2009-04-01 Revised:2009-08-01 Online:2010-07-25 Published:2010-07-25
  • Contact: DA Liang-jun

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摘要： 以丽娃河为例，针对其富营养化现状及河道特征，在传统环境工程治理基础上，构建立体植物群落和动物群落，实施近自然恢复工程，通过比较丽娃河在工程前后的水质和动植物群落的变化来验证近自然恢复工程的效果.研究表明，近自然恢复工程实施一年后，总氮和总磷分别降至0.41 mg/L和0.03 mg/L；叶绿素a降至7.86 μg/L，水质从原来的Ⅴ类降至Ⅱ类标准(GB38382002)，水质在很大程度上得以改善.除此之外，近自然恢复工程通过直接引入滤食藻类的底栖动物和鲢鱼鳙鱼，在调控藻类生物量的同时也在一定程度上增加了动物群落的生物多样性.实践证明，近自然恢复工程在丽娃河案例中是行之有效的，且耗资少，可以在城市生态系统近自然恢复实践中推广.

关键词: 近自然恢复, 城市河流, 生态系统构建, 食物链重建, 近自然恢复, 城市河流, 生态系统构建, 食物链重建

Abstract: Based on the eutrophication status and river channel characteristics of Liwa Creek, with the establishment of threedimentional plant communities and animal communities, the approxnatrual restoration engineering was carried out after traditional environmental engineering techniques. By comparing the changement of water quality, plant and animal communities in Liwa Creek before and after the engineering, the effects of this approxnatural restoration engineering were validated in this paper. The results show that after oneyear’s approxnatural restoration engineering measurement, TN and TP dropped respectively to 0.41 mg/L and 0.03 mg/L; contents of chlorophyll a dropped to 7.86 μg/L; Water quality was improved to a large degree, changing from the original class V to class Ⅱ standard. Besides, with the direct introduction of zoo benthos which filter feeding algae, Silver carp and bighead carp, biodiversity of animal communities is improved to a certain degree during the regulation of algae biomass. Practice proves that approxnatural restoration engineering is effective in the case of Liwa Creek based on low cost, which can finally be promoted during the approxnatural restoration practice of urban ecosystem.

Key words: urban river, ecosystem restoration, food chain rebuilding, approx nature restoration, urban river, ecosystem restoration, food chain rebuilding

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