CAJ | 학술논문

从自然成因与结果表现两方面，选取8个单项指标，构建湘江流域生态脆弱性评价指标体系。采用遥感和社会经济统计数据，运用主成分分析法，结合 GIS 技术，研究2000～2010年湘江流域生态脆弱性时空特征，并对其生态脆弱性进行空间自相关分析。研究结果表明：（1）2000～2010年湘江流域生态脆弱性程度有小幅下降，流域生态脆弱性均值由0.4468下降至0.4181。（2）将流域生态脆弱性划分为5个基本类型，2000～2010年间湘江流域极强脆弱、强度脆弱类型区栅格数量比重分别下降了2.04％和13.47％，中度脆弱、轻度脆弱和微度脆弱类型区栅格数量分别增加了1.13％、3.01％和4.45％。（3）湘江流域生态脆弱性空间差异显著，具有集簇分布的特征。生态脆弱区的空间聚集程度呈现出较高的正相关，空间格局伴有破碎化的发展趋势。生态脆弱性显著性相关区域主要分布在长株潭、娄底、永州市辖区；低相关区域主要分布在罗霄山、南岭地区。
종자연성인여결과표현량방면，선취8개단항지표，구건상강류역생태취약성평개지표체계。채용요감화사회경제통계수거，운용주성분분석법，결합 GIS 기술，연구2000～2010년상강류역생태취약성시공특정，병대기생태취약성진행공간자상관분석。연구결과표명：（1）2000～2010년상강류역생태취약성정도유소폭하강，류역생태취약성균치유0.4468하강지0.4181。（2）장류역생태취약성화분위5개기본류형，2000～2010년간상강류역겁강취약、강도취약류형구책격수량비중분별하강료2.04％화13.47％，중도취약、경도취약화미도취약류형구책격수량분별증가료1.13％、3.01％화4.45％。（3）상강류역생태취약성공간차이현저，구유집족분포적특정。생태취약구적공간취집정도정현출교고적정상관，공간격국반유파쇄화적발전추세。생태취약성현저성상관구역주요분포재장주담、루저、영주시할구；저상관구역주요분포재라소산、남령지구。
The author of this article constructs an evaluation indicator system of ecological vulnerability based on the causes and consequences of natural features .This paper studies the evolution patterns and spatial autocorrelation analysis of ecosystem vulnerability in the Xiangjiang Basin using the method of principal component analysis ,combined with GIS technology from 2000 to 2010 .The results show that :(1) The ecological vulnerability steady declined in Xiangjiang river basin from 2000 to 2010 . The mean value of ecological vulnerability declined from 0.4468 to 0.4181 .The rate of the extremely strong and strong ecological vulnerability area decreased 2.04% and 13.47% . The rate of moderately vulnerable ,weak vulnerable and micro vulnerable types of area increased respectively 1.13% ,3.01% and 4.45% . (2) The ecological vulnerability has obvious regional difference and spatial agglomeration characteristics . (3) The ecological vulnerability region spatial aggregation levels showed a high positive correlation ,the development trend of space pattern with fragmentation .The regional ecological vulnerability was high relative concentration distribution in Chang - Zhu - Tan , Loudi , Yongzhou . The regional ecological vulnerability was low relative concentration distribution in Luoxiao mountain and Nanling area .