Spatial Temporal Characteristic Analysis of Ecological Risk Based on Landscape Type in Beijing

doi:10.11924/j.issn.1000-6850.casb15050027

Abstract

Abstract: Ecological risk evaluation is an important method for evaluating ecological risk values of regional ecosystems of different types. How to evaluate the ecological risk quantitatively and qualitatively has always been the hot spot in ecological research. In this paper, the authors constructed a group of ecological risk index, and studied the spatial distribution characteristics, variation pattern and spatial correlation pattern of ecological risk in Beijing through spatial autocorrelation model and geo-statistics. The results showed that during the rapid development from 2000 to 2010, the change in area of landscape types in Beijing ranked in sequence as: water＞artificial＞farmland＞grassland＞unutilized land＞forest; ecological risk of land use had positive spatial correlation in a certain extent and decreased as the fraction size increasing; ecological risk in Beijing decreased firstly and then increased during 2000 to 2010, the strength of ecological risk showed a trend of radial gradual increase from urban to the suburbs and exurbs.

CLC Number:

X826

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