南京都市圈城市用地扩展特征分析  

Characteristics of Urban Land Expansion in Nanjing Metropolitan Area

作　　者：熊圆圆 李禕 XIONG Yuan-yuan;LI Yi(School of Public Administration,Hohai University,Nanjing 211100,China)

机构地区：[1]河海大学公共管理学院,江苏南京211100

出　　处：《江西农业学报》2023年第4期152-160,共9页Acta Agriculturae Jiangxi

基　　金：国家自然科学基金项目(41601157);江苏省哲学社会科学界联合会项目(15SSL037)。

摘　　要：基于2000─2020年5期遥感影像提取的土地利用数据,从扩张强度、扩张强度差异指数、聚类指数、景观格局指数对南京都市圈城市群城市用地扩张的时空分布特征进行了定量分析。结果表明:在2000─2020年期间,南京都市圈城市用地面积持续增加,扩张强度呈“上升─下降─上升”的变化趋势,其中2015─2020年城市用地的扩张强度最强;南京都市圈的高速扩张区域集中在都市圈边沿地区,主要分布在东北与西南方向,城市用地扩张布局向均衡化方向发展;南京都市圈城镇用地扩张在2000─2010年呈随机分布,2010─2015年呈高值聚集分布,2015─2020年呈随机分布;南京都市圈城市用地扩张的集聚度逐渐提高,斑块分布愈发集中化,斑块形状在不断整合扩张中趋向复杂化,城市用地斑块内的交通连接度不断提高,南京都市圈城市用地扩张向协同化方向发展。Based on the land use data extracted from five periods of remote sensing images from 2000 to 2020,the spatial and temporal characteristics of urban land expansion in Nanjing Metropolitan Area were quantitatively analyzed from the perspectives of expansion intensity and difference index of expansion intensity,cluster index and landscape pattern index.The results show that the urban land area of Nanjing Metropolitan Area continued to increase during 2000~2020,and the expansion intensity showed a trend of“up-down-up”.The urban land expansion intensity reached the highest during 2015~2020.The high-speed expansion area of Nanjing Metropolitan Area is concentrated in the edge of the metropolitan area,mainly distributed in the northeast and southwest directions,and the layout of urban land expansion is developing in a balanced way.The urban land expansion in Nanjing Metropolitan Area showed a random distribution during 2000~2010,a high value aggregation during 2010~2015,and a random distribution during 2015~2020.The agglomeration degree of urban land expansion in Nanjing Metropolitan Area is gradually increased,and the patch distribution is increasingly centralized.The patch shape tends to be complicated in the continuous integration and expansion.The traffic connectivity degree within the urban land patches is continuously improved,and the urban land expansion in Nanjing Metropolitan Area is toward the collaborative development.

关 键 词：城市用地 用地扩张 时空演变 南京都市圈 

分 类 号：F293.2[经济管理—国民经济]