新疆塔里木河流域生态脆弱带的环境质量综合评价

塔里木河流域是我国生态环境脆弱地区之一,流域内的不同区域,由于物质及能量匹配上不够协调,宏观上表现出不同的脆弱性特征.依据生态环境质量评价的有关原则,结合塔河流域生态环境的实际情况,筛选出20个指标,建立生态环境综合评价的指标体系.通过构建生态脆弱性指数,综合地反映了塔河流域生态环境质量的优劣程度.结果表明,阿克苏河流域属于生态环境改善区,叶尔羌河流域及塔河上游属于生态环境基本平衡区,和田河流域及塔河中游属于生态环境失调区,而塔河下游属于生态环境严重受损区,评价结果符合实际情况,对指导流域生态环境建设具有重要意义.

Comprehensive Assessment on Environmental Quality in Vulnerable Ecotone of Tarim River Basin

Tarim River Basin (TRB) is one of ecological environment vulnerable areas.Due to the matching of material and energy existed in some problems,the different fragility characteristics occurred obviously.According to related principles of ecological environment quality assessment,combined with ecological environment situation of Tarim River Basin,20 indexes were selected,and the indicator system for synthetically ecological environment assessment was built.Moreover,ecological fragility index was set up,which can be used to indicate the degree of ecological environment quality in Tarim River Basin.The results were as follows:Aksu River Basin belongs to improved area.Yerkart River Basin and the upper reaches of TRB belongs to balance areas and Hetian River Basin and the middle reaches of TRB belongs to maladjustment areas.The lower reaches of TRB belongs to severe damage area.The assessment results are consonant with actual situation,which play an important function in ecological environment construction.