东阳江流域生态系统健康评价
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

基金项目:

浙江省科技厅公益性项目"浙江省基岩淤泥质海湾围垦潜力评价技术研究"(2013C33029);浙江省新苗人才计划项目(2013R404053;2014R404058);浙江省教育厅资助项目(Y201226102)


Ecosystem Health Assessment of Dongyang River Basin
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    [目的] 通过对东阳江流域生态系统健康进行评价,旨在为该区生态补偿体制的制订提供参考。[方法] 参考环保部《流域生态系统健康评价技术指南》,建立水域生境结构、水生生物、水域生态压力、陆域生态格局、陆域生态功能和陆域生态压力共6大类17项评价指标,对东阳江流域29个评价单元进行生态系统健康评估。[结果] (1)东阳江流域生态健康等级处于一般及以上水平,其中优秀、良好和一般的评价单元分别占6%,60%和34%。(2)水域生态系统健康的主要限制因子是水质质量指数;陆域生态系统主要限制因子为森林覆盖率、建设用地比例、重要生境保持率及水源涵养功能指数等。(3)山地丘陵地区流域生态系统健康等级高,平原与盆地地区健康等级低;上游健康等级高,中下游人口密集地区健康评价等级偏低。[结论] 东阳江流域生态系统健康等级差异的根本原因是人类活动类型及强度的地区差异,而干流水质质量较差,建设用地比例高,点、面污染源排放量大是其主要的生态环境问题。

    Abstract:

    [Objective] Taking Dongyang River basin as the research area, to carry out watershed ecosystem health assessment, in order to provide conferences for decision-makings of ecological comensation system in this region.[Methods] According to technical guidelines of watershed ecosystem health assessment issued by Ministry of Environmental Protection, we set 6 evaluation categories, 17 indexes to assess the ecosystem health of 29 units in Dongyang River basin. The evaluation categories included water habitat structure, aquatic organisms, water ecological pressure, land ecological pattern, land ecological function and land ecological pressure.[Results] The project had completed the ecosystem health assessment of 29 units in Dongyang River basin. The evaluation results showed that:The ecosystem health of Dongyang River basin can be classified as excellent, good and general, accounting for 6%, 60% and 34% of the total area, respectively. The main limiting factor of aquatic ecosystems was water quality index, while land ecological limiting factors were mainly the forest coverage rate, the proportion of construction land, important habitat retention and water conservation functions. Ecosystem health was at a higher level in hilly area, and found at a lower level in plains and basins; and meanwhile, the upper stream ecosystem health level was higher, while densely-populated middle and lower reaches were at lower level.[Conclusion] It was the types and intensity of human activities that led to the regional difference of ecosystem health in Dongyang River basin. The most serious ecological environment problems in the basin listed:the poor water quality in the main stream, highly occupied proportion of construction land, point and surface sources of pollution.

    参考文献
    相似文献
    引证文献
引用本文

吴涛,解雪峰,蒋国俊,于海燕,马勇.东阳江流域生态系统健康评价[J].水土保持通报,2015,35(2):326-331

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2014-08-18
  • 最后修改日期:2014-09-19
  • 录用日期:
  • 在线发布日期: 2016-04-05
  • 出版日期: