摘要
合肥都市圈位于长三角,是长三角六大都市圈之一。合肥市作为长三角重要枢纽,社会经济发展迅速,但由于合肥都市圈除合肥市外各市区发展基础较弱,其发展不一,城市发展扩张水平不一,为探究合肥都市圈城市形态演变规律,揭示2012—2021年形态状况,利用NPP-VIIR夜光遥感数据提取2012、2014、2016、2018、2020和2021年度合肥都市圈数据,运用参考比较法提取合肥都市圈城市建成区,并计算扩张速度,扩张强度,扩张速率等相关建设数据,分析2012—2021年合肥都市圈城市扩张动态变化情况。结果表明:(1)提取建成区精度较高,可反映合肥都市圈城市建成区发展实际情况,城市扩张由高水平逐渐变为平缓扩张,都市圈重心逐步向合肥市辖区方向摆动。(2)研究时间内,合肥一直为都市圈首位度第一位城市,呈现倒V状。各市夜间灯光总强度和平均强度均表现为增强趋势。(3)捷夫指数表明,除个别城市外,城市群中其余城市发展较为充足,城市规模等级较为理想。(4)合肥成为稳定的热点区,有一定辐射带动能力,但总体辐射带动能力在整个都市圈内仍显不足。合肥市应充分发挥自身优势,统筹全域,助力都市圈发展。
The Hefei metropolitan area is located in the Yangtze River Delta,and is one of the six major metropolitan areas of the Yangtze River Delta urban agglomeration.It is an important hub with rapid socio-economic development.However,due to the weak development foundation of various urban areas in the Hefei metropolitan area,with the exception of Hefei City,their development varies and the level of urban development and expansion varies.In order to explore the evolution law of the urban form of the Hefei metropolitan area and reveal the form status from 2012 to 2021,NPP-VIIR night light remote sensing data was used to extract the data of the Hefei metropolitan area in 2012,2014,2016,2018,2020 and 2021,and the reference comparison method was used to extract the urban built-up areas of the Hefei metropolitan area and calculate the expansion speed,Analyze the dynamic changes in urban expansion in the Hefei metropolitan area from 2012 to 2021 based on relevant construction data such as expansion intensity and expansion rate.The results indicate that(1)the accuracy of extracting built-up areas is relatively high,which can reflect the actual development situation of urban built-up areas in the Hefei metropolitan area.Urban expansion gradually changes from high-level to gentle expansion,and the center of gravity of the metropolitan area gradually swings towards the direction of the jurisdiction of Hefei City.(2)During the research period,Hefei has always been the first city in the metropolitan area,presenting an inverted V shape.The total and average intensity of nighttime lighting in various cities show an increasing trend.(3)The Jiefu Index indicates that,except for a few cities,other cities in the urban agglomeration have relatively sufficient development and ideal urban scale levels.(4)Hefei has become a stable hot spot area with certain radiative driving capacity,but the overall radiative driving capacity is still insufficient within the entire metropolitan area.Hefei should fully leverage its own advantages,coordinate the entire region,and assist in the development of the metropolitan area.
作者
汤宝虎
刘庆广
王爱
胡鹏程
王世杰
王振宇
司敬敬
TANG Baohu;LIU Qingguang;WANG Ai;HU Pengcheng;WANG Shijie;WANG Zhenyu;SI Jingjing(School of Biological Food and Environment,Hefei University,Hefei 230601,China;School of Tourism and Exhibition,Hefei University,Hefei 230601,China;School of Architecture and Planning,Anhui Jianzhu University,Hefei 230009,China)
出处
《皖西学院学报》
2024年第5期108-114,共7页
Journal of West Anhui University
基金
安徽省高校人文社科重点项目(SK2018A0603)。
