摘要
基于1990年和2006年卫星遥感TM影像获取的土地利用信息,以广州市主城区为研究区域,运用土地利用动态度、土地利用综合指数,以及根据土地利用结构特征计算了土地的紧凑性系数和相对熵值,本文分析了广州市主城区土地利用结构域动态变化、以及土地利用的空间变换特征。结果表明:广州主城区土地利用综合指数呈增加态势,尤其以建设用地最为突出,耕地、林地、园地及水域大量转为建设用地,建设用地面积的大幅增长;研究区域土地利用建设和城市开发有分散的趋势,老城区的土地开发利用的形态最为紧凑,花都次之,南沙番禺地区最低,形态相对最不紧凑;三个区域的熵值都比较高,说明土地利用开发处于比较分散和平均的状态,而其中又以南沙番禺地区的熵值增加最快,也表明了这一地区的土地开发利用有分散的趋势。
Based on the information of land-uses which was achieved by the satellite remote sensing TM image in 1990 and 2006,this paper took the main urban area of Guangzhou as a study area to analyze its structure and dynamics of land-use changes,as well as the spatial-temporal variation of the land-use by dynamic degree of land-use,land-use composite index,and the compactness of construction land in line with the Chang of entropy.The results showed that land-use composite indexes of the main urban area in Guangzhou were in an increased trend,particularly in construction land-use.A large number of farmland,woodland,gardens and waters turned into construction land-uses,so construction land-use areas made a significant growth.;regional land use and urban development trends are scattered,old area＇s development and utilization is the most compact form,followed by Huadu,Panyu and Nansha area are mimimum,the shape is most not compact relatively;three regions have higher entropy,it showed that description of land use and development is more scattered and the average state,Panyu and Nansha area has the fastest growing areas of entropy among the three,also shows that the area of land development and utilization has a distributed trend.
出处
《国土与自然资源研究》
北大核心
2011年第2期25-27,共3页
Territory & Natural Resources Study
基金
国家自然科学基金项目资助(30970482)
关键词
土地利用结构
空间分析
广州市
land-use structure
spatial analysis
Guangzhou City
