2006―2016年粤港澳大湾区城市不透水面时空变化与驱动力分析  

Spatial-Temporal Changes of Impervious Surface in the Guangdong-Hong KongMacao Greater Bay Area during 2006-2016

作　　者：冯珊珊 樊风雷[1] FENG Shanshan;FAN Fenglei(School of Geography,South China Normal University,Guangzhou 510631,China)

机构地区：[1]华南师范大学地理科学学院,广州510631

出　　处：《热带地理》2018年第4期536-545,共10页Tropical Geography

基　　金：国家自然科学基金项目(41201432);华南师范大学2017研究生创新项目(2017LKXM027)

摘　　要：以遥感和地理信息系统技术为支撑,从城市地理学视角对粤港澳大湾区城市不透水面的时空变化状况进行分析,并探讨了不透水面变化的驱动力。结果表明:1)湾区内城市不透水面扩张现象明显,面积从2006年的12 127.69 km2增加到2016年的20 188.87 km2,年均增长速度高达6.65%;2)区域内城市不透水面空间分布越来越集中,呈现高密度区域聚集;3)交通道路(省道及以上级别)与城市不透水面扩张的速度和方向关系密切,其中与国道的关系最为紧密;4)国民生产总值(GDP)和常住人口的增长都对城市不透水面的扩张产生深刻的正向影响,相关系数分别为0.840 7和0.834 1;5)近10年来,粤港澳大湾区城市不透水面的空间格局变化显著,湾区各城市的发展阶段存在差异性,在未来城市发展中应该协调好各城市不透水面的扩张范围和速度,避免过高不透水面带来生态环境问题。Impervious surface has emerged not only as an important indicator of the degree of urbanization,but also a major indicator of environmental quality,which has been considered as a significant topic in the application of urban geography and ecology.With the rapid development of urbanization and increase of impervious surface,a growing number of urban governors and environmental managers have paid attention to the distribution of impervious surfaces.This paper examines the spatial-temporal changes and its dynamics of impervious surface areas(ISA)in Guangdong-Hong Kong-Macao Greater Bay Area using time series Landsat imagery from the perspective of urban geography with the supports of Remote Sensing(RS)and Geographic Information System(GIS).Linear spectral mixture analysis(LSMA)has been applied to estimate ISA,and the results of ISA were calculated by a thresholding method with impervious surface fraction>0.5.The results show that the ISA increases from 12 127.69 km^2 to 20 188.87 km^2 between 2006 and 2016,with an average annual growth rate of 6.65%.Meanwhile,the spatial distribution of ISA is becoming more and more concentrative.Additionally,this study reveals that the increase speed and direction of ISA and urban expansion and urban traffic have strong relationship,especially the national highway having the most prominent relationship among all of the styles of traffics.Economic development(gross domestic product,GDP)and permanent population have positive effects on increase of ISA,with correlation coefficient(R^2)of 0.840 7 and 0.834 1,respectively.Furthermore,the development of stages and patterns in Guangdong-Hong Kong-Macao Greater Bay Area are different.The impervious surfaces of Guangdong-Hong Kong-Macao Greater Bay Area have experienced significant changes in the past decades.The objective of this study is to quantify the dynamics of ISA in Guangdong-Hong Kong-Macao Greater Bay Area for its sustainable urban planning and management strategy.In the future urban development,we should coordinate the expansion

关 键 词：不透水面 遥感 城市地理 粤港澳大湾区 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]