天津滨海新区海岸带土地利用时空格局变化  

On Spatio-Temporal Changes of Land Use in a Coastal Zone,China:A Case Study in Tianjin Binhai New Area

作　　者：秦文翠 罗维[2] 刘运明[1] 

机构地区：[1]西南大学地理科学学院,重庆400715 [2]中国科学院生态环境研究中心城市与区域生态国家重点实验室,北京100085

出　　处：《西南师范大学学报（自然科学版）》2015年第5期135-141,共7页Journal of Southwest China Normal University(Natural Science Edition)

基　　金：国家自然科学基金项目(41271502;C031001);国家科技基础性工作专项(2013FY111100)

摘　　要：以我国北方典型海岸带——天津滨海新区为研究区,利用1990,1995,2000和2008年4期遥感影像数据,将土地利用类型分为6大类,通过计算土地利用类型动态度、土地利用转移矩阵和土地类型空间格局重心变化3种指标模型,利用GIS和地统计学,分析了我国北方典型滨海带1990—2010年4期土地利用变化的程度、速度、扩张形式和时空格局的变化.结果表明,近20年来我国北方滨海带——天津滨海新区正处于土地利用发展时期,水域面积减少了233.04km2,而建设用地逐年扩张,且其动态度达9.58%;同时水域、耕地和未利用地不断转为建设用地.滨海新区土地利用时空格局的变化主要源于政策导向和经济的不断发展.As a typical coastal belt of northern China ,Tianjin Binhai New Area （TBNA） has been divided into six categories of land use types ,based on TM images of the years of 1990 ,1995 ,2000 and 2008 . Temporal and spatial differences and expansion pattern of land use in TBNA are determined with GIS soft-ware for calculating land-use dynamic index ,conversion matrix ,spatial pattern center ,change degree and extent .Results show that land use pattern significantly changed from 1990 to 2008 ,characterizing by de-crease of water area and large increase of built-up land .Meanwhile the water area reduced 233 .04 km2 in recent 20 years and the dynamic index of built-up reached 9 .58% .Increased built-up lands dominantly came from water areas and partly from farmlands and unutilized lands .Only a small amount of grasslands were changed to built-up lands ,which indicates that TBNA was in the period of land use development . Spatio-temporal changes in land use pattern were mainly due to policy guidance and continuous economic development .

关 键 词：海岸带 时空变化 土地利用 动态度 空间格局重心 

分 类 号：P951[天文地球—自然地理学]