摘要
南方红壤地区是我国典型的生态脆弱区,生态退化成为制约区域可持续发展的重要因素.在分析鄱阳湖流域生态脆弱性成因的基础上,建立了鄱阳湖流域生态脆弱性评价指标体系,利用层次分析法确定了各指标权重,继而评价了鄱阳湖流域的生态脆弱性.研究表明鄱阳湖流域严重脆弱区、比较脆弱区、一般脆弱区和轻微脆弱区的面积分别为18.96%、29.03%、28.79%和23.23%;研究还揭示了流域自然环境条件是导致生态脆弱性的基础,而人类不合理的活动加剧了其脆弱性.研究结果可为流域生态脆弱区的恢复重建及生态经济可持续发展提供科学依据.
Red soil region in southern China is one of the typical ecological fragile areas in China. Ecological degradation is considered as the major factor that constrained the regional sustainable development. In this paper, the ecological fragile evaluation index system for Poyang Lake watershed was developed. The factors were quantized and the weights were determined using Analytic Hierarchy Process （AHP） method with the data collected from field observations and statistical source. The ecological vulnerability of the watershed was assessed using the composite index approach. The results show that the areas subject to very serious vulnerable, serious vulnerable, vulnerable and slightly vulnerableare18.96%, 29.03%, 28.79% and 23.23%, respectively. The stud y also revealed the natural conditions of the basin are responsible for the ecological vulnerability, while the irrational human activities increase the ecological vulnerability. The findings of the study are useful for watershed restoration and provide scientific basis for socio--economic in ecologically fragile areas development.
出处
《华中师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2011年第1期145-149,共5页
Journal of Central China Normal University：Natural Sciences
基金
国家自然科学基金主任基金项目(41040021)
国家科技支撑计划项目(2007BAC23B05)
鄱阳湖湿地与流域研究教育部重点实验室(江西师范大学)开放基金项目(PK2008003)
