中文摘要：

土地利用变化驱动力的空间差异对于揭示土地利用变化的方向性和结构性差异及其形成机制具有十分重要的意义。文章基于地统计学原理,运用遥感、GIS和变异函数等方法研究了佛山市土地利用变化驱动力的时空分异性。结果表明,不同时期佛山市土地利用变化驱动力具有显著的空间分异。从1991年到2005年,佛山市土地利用驱动力因子总体上呈多样化不断增长的态势,土地利用驱动力的程度和强度加大;空间分布由中心区向北和向西呈现连片式扩展,向南呈现跳跃式延伸;土地利用变化受自然因素驱动程度下降,受人类活动驱动程度增强,土地利用变化的结构性降低,随机性增大,表现出较大的不稳定性。1991年到2003年,以人类活动为主的土地利用变化驱动力的主导性由单一方向转变为互相垂直的双方向;2003年到2005年,佛山市土地利用驱动力分异呈现出多极主导的集聚式、组团式分布格局。

英文摘要：

The study of spatio-temporal variability of driving forces of land use change is much helpful to make clear its directional and structural differences and formation mechanism.Based on geostatistics and regionalized variable theory,RS,GIS and semivariograms are adopted to research the spatio-temporal variability of land use change driving forces in Foshan City in this paper.The results show that the strong spatial heterogeneity is the main characteristic of the distribution of land use change driving forces whose spatial variability is remarkable in different times;the multiplicity,degree and intensity of land use change driving forces in Foshan City have increased continuously from 1991 to 2005,its spatial distribution has expanded to west and north and jumping-extended to south during the period of 1991 and 2003;it is found that natural driving forces of land use change in Foshan City have decreased but human activity driving forces have enhanced during 1991 and 2005,that there are much more randomicity and instability than ever;the dominant spatial distribution of human activity driving forces have changed from single-side to upright both-sides from 1991 to 2003;the multipolar,convergent and group distribution patterns are appeared during 2003 and 2005.