摘要
为快速城市化进程中有效理解城市用地功能的时空变化特征提供一种快速有效的创新方法。基于POI(Points of Interest)与RS(Remote Sensing)数据,运用频数密度与类型比例法、核密度分析法,识别长沙市建成区2012年与2022年城市用地功能的变化特征。两期城市用地均呈现混合与单一功能用地“中心-外围”的圈层化地域分布格局,总功能用地增加39.04%;单一的工业用地规模最大且增加最显著,绿地与广场用地以及交通设施用地大大增加;主要的混合功能用地类型不变,但混合度增加16.85%。对比RS识别结果,基于POI数据精细化提取与划分城市单一与混合功能用地进行功能变化特征分析,更加符合实际情况。
In the context of rapid urbanization,the analysis of urban land use is essential to understand the spatial structure of cities and guide the layout of internal urban spaces.However,rapid and effective methods for identifying the spatial characteristics and dynamic changes in land use functions are unavailable.This study provides a rapid and innovative method to analyze the effects of altered urban land use on spatiotemporal evolution.The changes in urban land function in built-up areas of Changsha in 2012 and 2002 were analyzed based on Points of Interest(POI)from Internet maps by using frequency density and type ratios and kernel density estimation.Further,the results were compared via visual interpretation based on remote sensing data.Results show that a planning and management system for altered urban land function is important to ensure urban renewal.The overall distribution pattern of urban functional land during both phases showed a circular regional distribution.Mixed-function and single-function lands present a"center-peripheral"distribution pattern.Specifically,the mixedfunction lands were mainly distributed in the center of urban area,while the single-function lands were distributed in the peripheral regions along the mixed-function land,and outnumbered the mixed-function lands.Both single-function and mixed-function lands expanded outward,and the total functional land was increased by 39.04%.Changes in urban land function were required for urban economic transformation and upgrade,improvement of the residents'quality of life and ensuring urban ecological environment.The scale and number of single-function land use types increased.Specifically,the scale and number of industrial lands showed the most significant change,accounting for 54.45%of the total change.The green land and square land use as well as the land used for traffic facilities increased significantly,while residential land,public management and public service lands,and lands for business service facilities increased insignificantly.Changes
作者
李家裕
黄春华
LI Jiayu;HUANG Chunhua
出处
《南方建筑》
CSCD
北大核心
2023年第12期19-31,共13页
South Architecture
基金
国家自然科学基金重点项目(U1867221):温度层结条件下气载污染物迁移扩散规律
南华大学博士科研启动基金(190XQD047):夏热冬冷地区传统村落空间结构的弱化因素及多元共生建设模式研究。
关键词
城市用地功能
POI数据
RS解译
功能变化特征
长沙市建成区
urban land use function
POI data
RS interpretation
functional change characteristics
Changsha built-up area
