青海三江源国家级自然保护区湿地生态环境质量评价

基于层次分析法(AHP),选取生物多样性、典型性、代表性、稀有性、自然性、面积适宜性、脆弱性、人为活动强度等7项指标作为原则层、18项1级指标作为指标层,对三江源自然保护区湿地生态质量进行了评价。结果为,三江源自然保护区湿地生态综合评价指数为0.8915,评价等级为Ⅰ级;多样性、稀有性等2个原则层指标对综合评价的贡献率高达49.28%,对生态质量制约性最强,是反映保护区湿地生态质量保护成效的关键指标;保护对象典型性、生态系统类型多样性、物种多度、保护物种稀有性等4个一级指标对保护区湿地生态环境质量影响较大;近20年该保护区湿地保护成效明显。

Evaluation of Ecological Quality of Wetland Located in Sanjiangyuan National Nature Reserve of Qinghai Province

Based on the method of analytical hierarchy process(AHP),a multi-level structure model of ecological evaluation in accordance with the characteristic of Sanjiangyuan Nature Reserve was established.The criterion layer was made up of the biodiversity,typicality,rarity,size suitability,naturalness,fragility,human activity and index layer was composed of 18 sub-indexes.The result showed that CEI of ecological quality of wetland of Sanjiangyuan was 0.8915,ranked as the classⅠ,which was the highest in the evaluation regulation.Diversity and rarity contributed 49.28%to CEI,which reflected the most strict regulation quality.The criteria of typicality,ecosystem diversity,species richness and rarity of protected species combined to influence the ecological quality.The achievement in protection for the last 20 years is significant.