重庆市直辖以来土地利用变化及驱动力的主成分分析

以重庆市为例,运用重庆市1998～2010年统计年鉴中土地利用数据以及重庆市各类用地指标,分析了土地利用变化数量、速度,并以耕地为例进行主成分析,得出土地利用变化的驱动力是人口压力、经济增长、城市化进程加快、国家政策4个主要驱动因子,为重庆今后制定土地利用规划、土地保护政策以及合理利用土地资源、协调社会经济发展提供参考。

Principle Component Analysis on Land Use Change and Its Driving Forces since Chongqing become a Municipality

With Chongqing as the example,by using land use data from Chongqing Statistical Yearbook during 1998-2010 and indicators of various types of land,the quantity,speed of land use change were analyzed.With farmland as example,the principle component analysis was conducted.Four main driving forces for land use change were obtained,including population pressure,economic growth,urbanization process and state policy,which will provide reference for making land use planning,land protection policy and utilizing land resources,coordinating social economic development in Chongqing in the future.