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| 九龙江流域生态健康评价及管理对策 |
| Assessment of ecosystem health in Jiulong river basin and measures for management |
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| DOI： |
| 中文关键词: 流域生态系统健康 评价 管理对策 九龙江 |
| 英文关键词: watershed ecosystem health assessment management measures Jiulong river |
| 基金项目:国家环境保护公益性行业科研专项(201009021) |
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| 中文摘要: |
| 以九龙江流域生态系统的陆域、岸边带和水域3个子系统为评价对象,结合九龙江流域自然社会经济特征和存在问题,分析流域内不同生态系统的结构、功能和生态胁迫特征,从生态系统的物理、化学和生物完整性出发,建立九龙江流域生态系统健康评价指标体系.利用RS和GIS技术,以小流域作为评价单元,开展流域生态健康状况评价.评价结果表明：九龙江流域生态健康总体状况一般,陆域生态健康状况优于岸边带和水域子系统;从空间分布上看,北溪上游健康状况好于西溪及北溪中下游地区.基于主要影响流域生态健康状况的限制因素,探讨九龙江流域管理对策,提出“水域生境修复、岸边带综合整治、陆域污染削减”的建议. |
| 英文摘要: |
| Jiulong river basin ecosystem was divided into terrestrial, riparian and aquatic ecosystems as the evaluation objects, combined with the natural conditions, socio-economic characteristics and ecological problems, the characteristics of different ecosystems structure were analyzed, function and ecological stress, the index system of watershed eco health assessment of Jiulong river basin were constructed from the viewpoint of ecosystem′s physical, chemical, and biological integrity. Using RS and GIS technologies, the sub-watershed was studied as evaluation unit, a holistic systems approach was taken to assess the health condition of watershed ecosystem. The research indicated that comprehensive index for ecological health condition of Jiulong river basin is in a fair level. The terrestrial eco-health condition is better than eco health condition of riparian ecosystem and aquatic ecosystem. In view of spatial distribution, the upstream source area in Beixi river is in the highest level of health condition, which is better than the middle and lower reaches of Beixi river and Xixi river. Based on the primary intimidation factors of ecosystem health impairment of Jiulong river basin, the management countermeasures are put forward, which of water habitat restoration, riparian comprehensive improvement and terrestrial pollution reduction. |
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