江西科学2017，Vol.35Issue(2)：191-196,6.DOI:10.13990/j.issn1001-3679.2017.02.002
基于景观格局赣江上游易灾地区生态脆弱性分析
Analysis of Ecological Vulnerability in GanjiangUpstream Watershed Based on Landscape Pattern
摘要
Abstract
The Ganjiang River upstream is an important ecological barrier in the south of Jianxi province,to carry out research on ecological environment in the upstream of vulnerability,has an important strategic significance for the restoration and reconstruction,sustainable development and other aspects of the ecological environment in the region.The ecological vulnerability of the Ganjiang River upstream was assessed using a combined landscape pattern and ecosystem sensitivity approach.The landscape indices and ecological sensitivity indices are developed by using the landscape isolation,fractal dimension,fragmentation,suitability degree of land use type,and sensitivity of soil erosion.The major findings of this study include:1)The vulnerability of various landscape types was in the following decreasing order:unutilized land>garden>plot water area or artificial surface.This suggests that the ecosystems of unutilized land and garden plot are unstable and therefore sensitive to external disturbances;2)In 1985-2013,the vulnerability index of forest land was increased,while water area、artificial surface and garden plot was decreased;3)Significantly positive relationships were found between vulnerability of landscape and sensitivity of soil erosion and fragmentation.关键词
生态脆弱性/景观格局/生态敏感性/赣江上游Key words
ecological vulnerability/landscape pattern/ecological sensitivity/Ganjiang River upstream分类
资源环境引用本文复制引用
胡云,李丹,卢成芳,刘影..基于景观格局赣江上游易灾地区生态脆弱性分析[J].江西科学,2017,35(2):191-196,6.基金项目
国家自然科学基金地区项目(41361104) （41361104）
江西省重大生态安全问题监控协同创新中心资助项目(JXS-EW-00). （JXS-EW-00）
