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| Spatial characteristic analysis of land use eco-risk based on landscape structure: a case study in the Xingguo County, Jiangxi Province |
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Abstract In this paper a case study of land use eco-risk assessment was conducted in the Xingguo County, an typical red soil hilly region in Jiangxi Province. The assessment method was based on landscape disturbance index and landscape fragility. Spatial distribution and gradient differentiation characteristics of land use eco-risks in the study area were analyzed by means of spatial statistics like spatial autocorrelation and semi-variance analysis. Conclusions from the study were as follows. Eco-risk degree of land use 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 of land use in the east area and its peripheral regions were high. The step length of the eco-risk index’s spatial differentiation is short 43km in 1994 and 9.3km in 2005.
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Received: 18 August 2010
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