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Eco-environmental vulnerability evaluation in mountainous region using remote sensing and GIS - A case study in the upper reaches of Minjiang River, China
Li, AN1,2; Wang, AS3; Liang, SL2; Zhou, WC1
Corresponding AuthorLi, AN
2006-02-15
Source PublicationECOLOGICAL MODELLING
ISSN0304-3800
Volume192Issue:1-2Pages:175-187
SubtypeArticle
Abstract

The upper reaches of Minjiang River-valley, located on the eastern edge of Qinghai-Tibet Plain, is characterized by the complex distribution of hills and valleys. It is a typical and key mountainous region with apparent upland ecosystem vulnerability and sensitivity according to National Eco-environmental Renovating Scheme of china. In order to analyze eco-environmental vulnerability, remote sensing (RS) and geographical information system (GIS) technologies are adopted, and an environmental numerical model is developed using spatial principle component analysis (SPCA) method. The model contains nine factors including elevation, slope, accumulated temperature, drought index, land use, vegetation, soil, water-soil erosion, and population density. Using the model, the integrated eco-environmental vulnerability index (EVI) of study area in 1972, 1986, and 2000 are computed. According to the numerical results, the vulnerability is classified into five levels: potential, slight, light, medial, and heavy level by means of the cluster principle. The eco-environmental vulnerability distribution and its dynamic change in the last 30 years from 1972 to 2000 are analyzed and discussed. The results show that the eco-environmental vulnerability in study area is at medial level, and presents apparent vertical-belt distribution, and that driving forcings of dynamic change are mainly caused by human social economic activities and the contribution of late national eco-environmental protection policies, such as Natural Forest Protection and Grain for Green. According to these results, the study area is regionalized into three sub-regions, which may serve as a base for decision-making for eco-environmental recovering and rebuilding. The results of this study indicate that the method that integrates RS, GIS, and the SPCA to evaluate eco-environment vulnerability in mountainous region, cannot only distinctly represent the input subject spatial distribution of mountain vertical-belt feature, but also respect the river-valley as a whole system. (c) 2005 Elsevier B.V. All rights reserved.

KeywordEco-environment Vulnerability Spatial Principal Component Analysis (Spca) Remote Sensing Gis
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1016/j.ecolmodel.2005.07.005
WOS Subject ExtendedEnvironmental Sciences & Ecology
Indexed BySCI
WOS KeywordDECISION-SUPPORT ; SENSED DATA ; ECOSYSTEM ; QUALITY ; MANAGEMENT ; CRITERIA ; MODELS ; REGIONALIZATION ; RESTORATION ; ECOLOGY
Language英语
WOS SubjectEcology
WOS IDWOS:000235512900011
Accession numberAccession number: 2006069679727
Citation statistics
Cited Times:110[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/10506
Collection成都山地所知识仓储(2009年以前)
数字山地与遥感应用中心
Affiliation1.Chinese Acad Sci, Chengdu Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
2.Univ Maryland, Dept Geog, College Pk, MD 20742 USA
3.Chinese Acad Sci, IAP, Beijing 100029, Peoples R China
Recommended Citation
GB/T 7714
Li, AN,Wang, AS,Liang, SL,et al. Eco-environmental vulnerability evaluation in mountainous region using remote sensing and GIS - A case study in the upper reaches of Minjiang River, China[J]. ECOLOGICAL MODELLING,2006,192(1-2):175-187.
APA Li, AN,Wang, AS,Liang, SL,&Zhou, WC.(2006).Eco-environmental vulnerability evaluation in mountainous region using remote sensing and GIS - A case study in the upper reaches of Minjiang River, China.ECOLOGICAL MODELLING,192(1-2),175-187.
MLA Li, AN,et al."Eco-environmental vulnerability evaluation in mountainous region using remote sensing and GIS - A case study in the upper reaches of Minjiang River, China".ECOLOGICAL MODELLING 192.1-2(2006):175-187.
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