论河流保护与修复的生态目标

DISCUSSION ON ECOLOGICAL TARGET FOR RIVER CONSERVATION AND RESTORATION

分析了国内外河流保护与修复的相关理论研究和实践进展,指出开展河流保护与修复工作必须首先明确河流生态修复目标。为能够实际指导河流修复和管理,生态保护目标需要量化。介绍了国外以水流情势为核心的河流生态目标量化新方法(DRIFT法),以及对河流生态保护等级的标准划分。结合我国的具体国情,建议应用“生态支持配置”概念,尽快规划我国河流生态功能分区,设定不同区位的生态保护目标和等级,确定相应的保护水平,分区、分类、分级实施河流保护与修复。

Based on the review of relevant theories and practices in river conservation and restoration all over the world, the authors proposed that a proper ecological target should be set up to meet the primary need in river conservation and restoration. The target should be quantified for practical direction for river management and restoration. For this purpose, a recently deve!9.ped metkiod of DRIFT is briefly introduced in the paper, and the classification of ecological conservation level or grade was also analyzed. In consideration of the present situation in China, it is suggested that we should make out the ecological functional division of rivers, plan and set various conservation targets for different rivers, and confirm corresponding conservation levels so as to enforce river conservation and restoration.