生态环境学报Issue(1)：170-175,6.
河流水生态修复阈值界定指标体系初步构建
The preliminary structure of definition index system for river water ecological restoration threshold
摘要
Abstract
Ecological threshold exists in all kinds of ecological systems. Deficiencies on ecological threshold research in river ecological system were pointed out based on reviewing relevant literatures and analyzing theory researches and practices on forest, grassland, lake, wetland and river ecological threshold. For the restoration of degraded river ecosystems in the high pollution load, there were very few study on the threshold of ecological restoration. The studies on index system of river ecological restoration threshold had yet appeared. By analyzing the importance of threshold in river ecological restoration, it pointed out that the determination of the river restoration threshold was the basis of degraded river ecological restoration and provided a scientific basis and decision support for the area to restore the river ecosystem. What’s more, it was urgent needs for the development of the water environment management. On the basis, it put forward the river ecological restoration threshold concept which was to define to which degradation extent should the river ecological systems need to be restored according to river ecosystem natural properties and functions of river and needs of regional socio-economic development, If the degree of degradation were more than the ecological restoration threshold, it will need manual restoration. Otherwise, it will not need restoration. Through summarizing index system construction principles, screening methods and threshold calculation methods, this paper put forward the technical route of river ecological restoration threshold. Combining frequency analysis method with theory analysis method, index system and threshold calculation method system of river ecological restoration threshold were initially built on six elements (physical structure, hydrological conditions, water quality, aquatic organisms, stream function and social economic) which influenced river restoration. This laid the foundation for next quantitative screening and threshold calculation of river ecological restoration threshold index system.关键词
生态阈值/河流生态系统/修复阈值/指标体系/方法体系Key words
ecological threshold/river ecological ecosystem/restoration threshold/index system/methodology分类
资源环境引用本文复制引用
于鲁冀,吕晓燕,宋思远,梁静,王小青..河流水生态修复阈值界定指标体系初步构建[J].生态环境学报,2013,(1):170-175,6.基金项目
淮河流域(河南段)水生态修复关键技术研究与示范课题(2012ZX07204-004) （河南段）
