With the increase of population ,land carrying capacity and regional food security have attracted great attention worldwide .Evaluating regional land carrying capacity and analyzing its spatial‐temporal difference are important for regional grain security and land resource sustainable utilization .Based on the relationship between population and grain ,land carrying capacity (LCC) and land carrying capacity index (LCCI) models are built in this study to analyze the temporal and spatial disparities of land carrying capaci‐ty of each county/district in Chongqing so as to provide a scientific basis for decision‐making and overall planning of land use and sustainable development .In the period from 2004 to 2010 ,the gap in land carry‐ing capacity level between various counties/districts of Chongqing city became increasingly larger and the overloading of land resources was serious .In the 7 years ,the quantitative distribution of various levels of land carrying capacity of the 40 counties/districts exhibited an M‐shaped model .The counties showing the critical overload and over‐balanced situations stood on the peaks of “M” ,seriously overloaded counties/dis‐tricts lay in the middle of “M”and overload and surplus counties/districts were at the bottom ends of “M”. In the same period ,the number of the counties/districts of Chongqing with coordinated levels of land car‐rying capacity and social and economic development remained unchanged ,the number of the counties/dis‐tricts w hose social and economic development lagged behind their land carrying capacity diminished ,and the number of the counties/districts whose social and economic development surpassed their land carrying capacity increased from 13 in 2004 to 15 in 2010 .
NETL
NSTL
维普
万方数据
