水生态红线框架体系和划定方法研究

水生态红线是水生态环境保护的重要途径,将从管理机制上为水生态安全提供更可实施的保障。本文通过对水生态系统表象特征和水生态系统演化过程的关联分析,提出了水生态保护的红线框架体系:水量红线、空间红线和水质红线,阐释了三条红线间的相互关系及其内涵。综合生态需水、淹没面积、生态健康评价方法,嵌入我国生态环境保护相关规范,提出了兼顾自然和社会属性的水生态红线分级方法,建立了水生态红线指标体系。以淮河水系淮滨、王家坝和蚌埠断面为例,进行了水生态红线划定的示例应用。本文提出的三位一体的水生态红线框架体系和红线划定方法,弥补了水生态保护红线机制研究的空缺,为水生态保护研究与实践提供了新的思路和方法。

Framework and delimitation study of aquatic ecological red-line

Aquatic ecological red-line is an important method in water eco-environment protection, which provides a more feasible management mechanism for protecting water ecological security. By analyzing the relationship between the characteristics of aquatic ecosystems and ecological processes, this article proposes a framework for aquatic ecological red-line which contains magnitude red-line, spatial red-line and water quality red-line, and analyzes the interaction among these three kinds of red-lines and their connotations. Based literature research in methods of environmental flow, inundated area, ecosystem health assessment, etc.,considering rules and regulations about environment protection in China,a defining method which combines natural attributes with social attributes is put forward. Three cross-sections (Huaibin, Wangjiaba and Bengbu) in the Huai River basin are chosen as examples to set aquatic ecological red-line. This study fills in gaps in aquatic ecological red-line and has profound meaning to further research.