摘要
以开封市马家河流域为例,将马家河生态系统的退化程度作为研究对象,将生态系统退化程度突破阈值即形成生态系统稳态转换作为目标事件,建立河流水生态修复阈值界定指标体系,计算河流生态系统退化的强度。评价结果表明,马家河流域水生态系统健康处于较差水平,物理结构、人为活动强度和水生生物是影响马家河水生态健康状况的主要因素,建议对受损河流及时进行生态修复。
Degradation of Majiahe ecosystem is targeted as study subject by using the case of Majiahe Small Watershed. An index system for threshold value of water ecology recovery is established by using breakthrough value of describing degradation （i.e. transfer of ecosystem stability） as target event, so as to calculate the intensity of ecosystem degradation. The result indicates that ecosystem of Majiahe Basin is at poor level due to its geological structure, intensified human activities and aquatic organism. It is recommended to take immediate restoration to the damaged river system.
出处
《中国水利》
2014年第16期17-19,共3页
China Water Resources
关键词
农村河流
水生态系统
生态修复
生态阈值
开封
rivers of countryside
water ecosystem
ecological recovery
ecological threshold value
Kaifeng
