崇州市土地利用变化基本特征及人文驱动力分析

The Basic Characteristics of Land Use Change and their Human Driving Factors in Chongzhou City

基于2002-2014年TM/ETM+影像,选取山地平原过渡带崇州市为研究区,在RS和GIS技术的支持下,采用人机交互图像处理方法提取了该市土地利用信息,应用土地利用动态度、土地利用程度、主成分分析法结合社会统计数据对崇州市12年来土地利用变化时空特征及人文驱动进行了研究.结果表明:(1)土地利用类型以林地、耕地、建设用地为主,建设用地动态度最大,为5.72,未利用地其次为1.04,其他类型土地利用变化速度不显著.(2)崇州市土地利用程度处于稳定增长状态,但各乡镇变动值差异较大,受地形影响明显,土地利用开发地域差异明显.(3)人口与城镇化、经济发展与产业结构调整是崇州市土地利用变化的主要人文驱动因素,且驱动作用呈逐年加强趋势.

Based on the RS and GIS technology,the authors utilizes man computer interactive image processing methods to acquire the land use data in TM/ETM ＋ image of 2002 and 2014,and analyzes the spatiotemporal characteristics and driving factors from the rate of land use change,the degree of land use,principal component analysis. The results of the current study demonstrate that（ 1） Land use types are mainly composed of forest land,cultivated land and construction land. Compared with the other land use types,construction land has the highest dynamic degree of 5. 72 followed by unutilized land 1. 04;（ 2） the land use degree is in a steady state of growth,while there are obvious regional differences in the degree of land use among different towns. Affected by the terrain,land use development regional differences（ 3） Population and urbanization,economic development and industrial structure adjustment is to state the main human driving factors of land use change,and the driving role in strengthening trend year by year.