摘要
改革开放以来,经济社会的快速发展不断重构着长三角地区城市建设用地扩展强度的空间格局,对其空间特征及驱动机理进行研究能够为区域形成科学、有序和可持续的发展观提供支撑。长三角是中国城市建设用地扩展最剧烈的地区之一,使用长三角地区40年不透水面数据对41个地级市城市建设用地扩展强度的时空动态特征进行分析,并采用时空地理加权回归模型对驱动因素进行探究。结果表明:(1)伴随城镇化快速推进,长三角地区城市建设用地扩展强度的区域差异不断扩大,空间不均衡性逐渐凸显,高扩展强度区演化具有空间交替性,并逐渐在长江沿线城市和浙江沿海城市集聚,形成"Z"字型空间格局;(2)沪宁合杭甬发展带等城市扩展强度相较于全域具有更为剧烈的变动过程,核心城市的集聚规模效应明显,并具有路径依赖特征;(3)从城市建设用地扩展强度的邻域关系来看,具有较强的时空凝聚性并以正向协同增长为主,其中大多数城市处于相对稳定的空间状态;(4)人口、经济、行政等因素共同作用城市建设用地扩展强度变化,不同时期的主导驱动因素在不断变化,呈现由经济总量向经济质量、经济活动向政府供给政策的转变。
The rapid economic and social development has continuously reconstructed the spatial pattern of the built-up area expansion intensity since 1978 in the Yangtze River Delta. The research on its spatial characteristics and driving mechanism can provide support for the scientific, orderly and sustainable region development. The Yangtze River Delta is one of the regions with the most dynamic expansion of built-up area in China. This paper analyzed the spatial-temporal dynamic characteristics of the built-up area expansion intensity for 41 cities in the Yangtze River Delta using an impervious surface dataset from 1978 to 2017. And the geographically and temporally weighted regression(GRWR) model was applied to discuss the driving factor. The results showed that:(1) with the fast urbanization, the regional differences of the built-up area expansion intensity in the Yangtze River Delta has been constantly increased, and the spatial difference has also been obvious. The regions with high intensity have an alternate expansion. The expansion process has gradually appeared in the cities along the Yangtze River and the coastal areas of Zhejiang Province, which has led to a Z-shape spatial pattern.(2) The region including Shanghai, Nanjing, Hefei, Hangzhou, and Ningbo has a more drastic change process in the whole study area. This region has obvious agglomeration effect of core city and path-dependent characteristic.(3) The neighborhood relationship of the built-up area expansion intensity has strong spatial-temporal agglomeration and is dominated by positive collaborative increase. Most of the cities are in a relatively stable spatial state.(4) The factors such as population, economy, administration work together to change the urban built-up area expansion intensity, and the main driving factors are various in different periods. It shows the transformation from economic total quantity to economic quality, and from economic activity to government supply policy.
作者
吴小影
杨山
尹上岗
徐晗泽宇
WU Xiao-ying;YANG Shan;YIN Shag-gang;XU Han-zeyu(School of Geographical Science,Nanjing Normal University,Nanjing 210023,China;Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application,Nanjing 210023,China)
出处
《长江流域资源与环境》
CAS
CSSCI
CSCD
北大核心
2021年第11期2594-2606,共13页
Resources and Environment in the Yangtze Basin
基金
国家自然科学基金项目(41771171)
江苏省研究生科研创新计划项目(KYCX20_1173,KYCX20_1176)。
关键词
城市建设用地
空间扩展强度
时空地理加权
长三角地区
urban built-up area
spatial expansion intensity
geographically and temporally weighted regression model
the Yangtze River Delta
