摘要
洞庭湖区是长江中游流域最重要的以河湖系统为主的湿地分布区之一。由于人类长期垦殖活动,已成为中国重要的农业商品基地。洞庭湖区湿地生态系统受到自然因素和人为因素的影响,湖区湿地生态系统表现出脆弱性特征。在此基础上分析其主要脆弱性影响因子包括:地貌脆弱因子、气候脆弱因子、水文脆弱因子以及过度围湖造田、过度利用湖泊资源、超标污染物排放等。然后对湖区湿地生态系统的脆弱生态环境特征进行了分析,最后提出科学有效的生态恢复重建的措施。
In Dongting Lake area, the wetland ecosystem shows the characteristics of vulnerability, owing to the impact of natural factors and human irrational activities, such as factors of landform, climate, and hydrology, and also excess reclamation land from lakes, excess utilization of lakes＇ resources, discharge of pollutants. These have resulted in a series of ecological vulnerable problems, which include increase of diseases of diseases of flooding, inundation, and waterloggin-g; gleization and swamping of soil; degradation of wetland system. In order to rehabilitate degraded wetland ecosystem, several measures should be taken.
出处
《云南地理环境研究》
2006年第1期10-13,共4页
Yunnan Geographic Environment Research
基金
国家软科学研究计划项目(2003DGQ3D058)
湖南省社科课题"洞庭湖区4350工程生态经济研究"项目资助
关键词
湿地
脆弱性
生态系统
重建
洞庭湖区
wetland
vulnerability
ecological restoration
reconstruction
Dongting Lake area
