With the support of Arc GIS and Geo Da software and using exploratory spatial data analysis as well as percentile and coefficient of variation, this paper analyzes the spatial pattern and the evolution of the spatial autocorrelation characteristics and relative difference characteristics of ecological carrying capacity in the Dongting Lake region from 2001 to 2010. The results show that: (1) As a whole, the spatial distribution of ecological carrying capacity presents a W-shaped pattern from southwest to northeast and the difference of an inverted-U shape between counties are apparent. (2) As to spatial autocorrelation, the distribution of the ecological carrying capacity of global spatial autocorrelation is positive. There is spatial gathering between similar counties; Global Moran's I is almost the same in different counties; the degree of spatial aggregation is relatively stable and fluctuates around a low degree of aggregation within small scale; LISA cluster of local spatial autocorrelation can be divided into three types, including HH, HL and LH, which are in turn concentrated in the central, southwest and northeast parts of the Dongting Lake region; local spatial pattern remains relatively stable, but the clustering characteristics shows a sign of slight change. (3) As to the evolutionary process of relative differences, the ecological carrying capacity of the Dongting Lake region shows some differences from 2001 to 2010 as a whole. The relative difference is small from 2001 to 2003 and tends to be stable; there is relatively large difference before and after 2005; the relative difference since 2005 has become greater.
XIONG Jianxin, PENG Baofa, CHEN Duanlu, WANG Yali, ZHANG Meng
. Temporal and spatial evolutionary feature of ecological carrying capacity in Dongting Lake region[J]. GEOGRAPHICAL RESEARCH, 2013
, 32(11)
: 2031
-2040
.
DOI: 10.11821/dlyj201311006
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