Regional Eco-Risk Analysis Based on Landscape Structure and Spatial Statistics

Author

Hualin Xie

Author_Institution

Coll. of Resource & Environ. Manage., Jiangxi Univ. of Finance & Econ., Nanchang, China

fYear

2009

fDate

11-13 June 2009

Firstpage

1

Lastpage

4

Abstract

This paper describes a case study of eco-risk appraisal in the Xingguo County, an red soil hill region in Jiangxi province. The appraisal was conducted based on landscape disturbance index and landscape fragility. Spatial distribution and gradient differentiation characteristics of the eco-risks in the study area were analyzed by means of spatial statistics like spatial autocorrelation and sub- analysis of variance. Conclusions from the study are as follows: eco-risk degree was positive correlation, and a decreasing trend exits with the increase of grain size of landscape patches. Eco-environment quality mounted up to a small extent while and the area with high eco-risk lessened in the period from 1994 to 2005 in Xingguo County. Eco-risk degree in the east-middle lump of sand and its peripheral regions were high. The step length of the eco-risk index´s spatial differentiation is quite short, 43km in 1994 and 9.3km in 2005.

Keywords

ecology; geophysical techniques; soil; statistical analysis; eco-environment quality; gradient differentiation; grain size; landscape disturbance index; landscape fragility; regional eco-risk analysis; spatial autocorrelation; subanalysis of variance; Appraisal; Autocorrelation; Ecosystems; Environmental economics; Humans; Pattern analysis; Soil; Statistical analysis; Statistical distributions; Temperature;

fLanguage

English

Publisher

ieee

Conference_Titel

Bioinformatics and Biomedical Engineering , 2009. ICBBE 2009. 3rd International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4244-2901-1

Electronic_ISBN

978-1-4244-2902-8

Type

conf

DOI

10.1109/ICBBE.2009.5163293

Filename

5163293