摘要
对河流生态系统特征及流量变化的生态效应的认知,是进行河流有效管理的前提.根据河流水情及其相应的生态变化,文章提出了河流生态水文季节的概念;与生态水文季节相对应,界定了最小生态流量、适宜生态流量和汛期生态流量的内涵;在此基础上,以水文连接度、生境改变、物种变化以及生态系统功能等为参考指标,分析了流量变化的生态效应.为探索有效的河流生态系统修复途径和管理策略,维持河流系统的健康提供科学依据.
Understanding the characteristics of riverine ecosystem and flow regime is the primary condition for good management of rivers. According to the river flow regime and its ecological effect, the concept of ecohydrological regime is proposed, and minimum and appropriated ecological water demand, ecological water requirement are defined. Based on the indexes of hydrological connectivity, habitat and species population change, ecological functions and so on, the ecological effect of flow regime are discussed. The paper has provided scientific supports for maintaining riverine ecosystem health and achieving good management.
出处
《南京晓庄学院学报》
2007年第6期59-62,共4页
Journal of Nanjing Xiaozhuang University
基金
国家自然科学基金项目(50509017)
"十五"国家科技攻关计划重大项目(2004BA610A-01)
关键词
河流生态系统
生态流量
生态效应
Riverine ecosystem
ecological flow
ecological effect
