1995—2006年南通市城市扩展特征分析  

Analysis of Urban Expansion in Nantong City from 1995 to 2006

作　　者：王涛[1,2] 杨强[3] 

机构地区：[1]中国科学院南京地理与湖泊研究所,江苏南京210008 [2]中国科学院研究生院,北京100049 [3]南京大学地球系统科学国际研究所,江苏南京210093

出　　处：《测绘与空间地理信息》2012年第7期9-13,16,共6页Geomatics & Spatial Information Technology

摘　　要：以遥感数据为基础,结合缓冲区分析,对南通市的城市扩展特征和扩展的方向性进行了研究。研究时段分为前期1995—2001年和后期2001—2006年,结果表明:1)南通市城市扩展速度前期高于后期,建设用地增加面积后期高于前期。前期发展为跳跃式点状扩展模式,后期以城市核心区域为主体,以面状方式向外扩展。2)在城市扩展的方向上,前期变化率和变化量东南>东北>西北,后期东南>西北>东北。但后期变化量显著高于前期。Urban expansion is an important basis for urban planning.Borrowing the location theory of economic geography and buffer analysis and using remote sensing image data,the study periods are divided into two stages: pre-period 1995—2001 and post-period 2001—2006.The paper studies urban expansion of Nantong city and the results show that:(1) rate of urban expansion is increasing faster in pre-period than the post,and the increase of built-up land area is larger in post-period than the previous.Urban expansion of pre-period is in jumping point mode and that of post-period is in polygon mode centered in the core area of Nantong city.(2) In the direction of urban expansion,change of rate and area in pre-period follows the way of southeast>northeast>northwest,while southeast>northwest>northeast in post-period,but the change area in post-period is more obvious than the previous.

关 键 词：城市扩展 方向性 缓冲区 南通 

分 类 号：P208[天文地球—地图制图学与地理信息工程]