太湖湖滨带生态系统健康评价及其修复模式探讨
Ecosystem Health Assessment and Eco-Restoration Mode Discussion for Lakeside Zone of Taihu Lake
投稿时间:2017-11-02  修订日期:2020-07-31
中文关键词:太湖  湖滨带  生态系统  健康评价  修复模式
英文关键词:Taihu Lake  lakeside zone  ecosystem  health assessment  eco-restoration modes
基金项目:国家水体污染控制与治理科技重大专项
作者单位
张 雯 华东师范大学生态与环境科学学院上海 200062 
黄民生 华东师范大学生态与环境科学学院上海 200062 
张廷辉 华东师范大学生态与环境科学学院上海 200062 
崔 贺 华东师范大学生态与环境科学学院上海 200062 
胡 伟 华东师范大学生态与环境科学学院上海 200062 
马明海 华东师范大学生态与环境科学学院上海 200062 
陈 奇 华东师范大学生态与环境科学学院上海 200062 
韩 莉 华东师范大学生态与环境科学学院上海 200062 
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中文摘要:
      根据太湖湖滨带生态系统的特点,选用综合健康指数方法对其进行评价,设置可反映湖滨带生态系统中水质、底泥、植被、其他生物状况、岸带物理状况等因素的评价体系及评价标准。于2015年春、夏、秋三季环绕太湖对其6种湖滨带类型共18个点位进行综合采样分析,以综合健康指数方法评价得出2015年太湖湖滨带生态系统健康指数(EHCI)总趋势为先降后增,即春、秋两季时湖滨生态系统健康程度优于夏季,春季56%的点位生态系统处于“健康”以上水平,夏季各点位生态系统健康普遍恶化,仅28%点位处于“健康”以上水平,秋季“健康”点位比例略有上升,达到45%。各区域生态系统健康平均指数(EHCI)排序为:贡湖(69.51)>东太湖(65.55)>竺山湾(59.42)>南部沿岸(48.06)>五里湖(47.63)>西部沿岸(37.04)>梅梁湾(32.53)。梅梁湾、西部沿岸均属于“疾病”状态,产生主要不利影响的因素是叶绿素含量高、植物覆盖率低及岸内滩地面积小。太湖各类型湖滨带生态系统健康指数排序为:间歇露滩-大堤型(65.39)>长期露滩-大堤型(64.80)>无滩地-大堤型(48.66)>河口型(47.66)>有滩地-山坡型(33.40)>无滩地-山坡型(19.86)。根据生态系统健康评价结果及实地探勘工程经验对不同类型的湖滨带生态修复模式提出了建议。
英文摘要:
      The lakeside zone can increase or decrease pollution inputs to lakes, and is important component and indicator of ecosystem health. In this study, we evaluated the ecological health of different lakeside zones along Taihu Lake using an ecological health comprehensive index (EHCI). In April (spring), August (summer) and October (autumn) of 2015, a systematic sampling and field investigation was conducted at 18 sites within six lakeside zone types around Taihu Lake. The data was systematically analyzed and an EHCI was developed that included 14 indices representing water quality, sediment quality, vegetation condition and several biophysical parameters. The ecological status of the six lakeside zone types was analyzed and ranked according to the EHCI. The seasonal EHCI for the lakeside zones decreased and then increased, indicating that the ecological health of the lakeside zone declines during the summer. 56% of the sampling sites were healthy in the spring , 28% in summer and 45% in autumn. The average EHCIs of seven regions of the Taihu lakeside zone ranked as follows: Gonghu Lake (69.51)>East Taihu (65.55)>Zhushan Bay (59.42)>South Bank (48.06)>Wuli Lake (47.63)>West Bank (37.04)>Meiliang Bay (32.53). The Meiliang Bay and the West Bank ecosystems were unhealthy, and the major negative factors were high chlorophyll levels, low plant coverage and small beach areas. The EHCIs of the six different lakeside types around Taihu Lake followed the order: levee with intermittent exposed beach (65.39)>levee with long-term exposed beach (64.80)>levee without beach (48.66)>estuary type (7.66)>hillside with beach (33.40)>hillside without beach (19.86). Several suggestions on eco-restoration methods for different lakeside zone types were proposed based on the field investigation and assessment results.
张 雯,黄民生,张廷辉,崔 贺,胡 伟,马明海,陈 奇,韩 莉.2020.太湖湖滨带生态系统健康评价及其修复模式探讨[J].水生态学杂志,41(4):48-54.
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