摘要
基于2000年、2005年、2010年、2015年、2020年五期遥感影像解译数据,借助ArcGIS10.2的空间分析等功能,利用城市扩张速率、城市扩张强度、景观扩张指数等研究方法,测度、描述与揭示合肥都市圈城市用地扩张过程及时空特征。研究表明:(1)合肥都市圈各城市建设用地扩张的数量特征:2000一2020年合肥都市圈建设用地面积扩张约3.5倍。2000—2005年,合肥都市圈的城市用地从520.27km^(2)增长到629.55km^(2),净增长109.28km^(2),扩张速率为4.20%,扩张强度0.03%。2006—2010年、2011—2015年和2016—2020年分别净增长352.48km^(2)、388.69km^(2)和445.46km^(2);扩张速率分别为11.20%、7.92%和6.50%。(2)合肥都市圈各城市的建成区扩张速率与扩张强度在2000—2005年、2006—2010年、2011—2015年以及2016—2020年四个阶段中,除了桐城市在2006一2010年、蚌埠市在2016一2020年的扩张速率出现负增长,其余城市均保持正增长,增长态势大致上呈现先升后降。桐城市在2006一2010年、蚌埠市在2016一2020年的扩张强度也出现负增长。
This paper takes eight cities in Hefei metropolitan area as the research object.Based on the interpretation data of five remote sensing images in 2000,2005,2010,2015 and 2020,with the help of the spatial analysis and other functions of a ArcGIS10.2 software,the process of urban land expansion in Hefei metropolitan area and its temporal and spatial characteristics are measured,described and revealed by using the research methods of urban expansion rate,urban expansion intensity,landscape expansion index and so on.The results showed that:(l)The quantitative characteristics of urban construction land expansion in Hefei metropolitan area:from 2000 to 2020,the construction land area in Hefei metropolitan area expanded by about 3.5 times.From 2000 to 2005,theurban land in Hefeimetropolitan area increased from520.27squarekilometers to629.55squarekilometers,witha net increaseof109.28 square kilometers,an expansion rate of 4.20 and an expansion intensity of 0.03.From 2006 to 2010,from2011 to 2015 and from 2016 to 2020,thenetgrowthwas 352.48 squarekilometers,388.69 square kilometers and 445.46 square kilometers respectively;The expansion rates were 11.20 percent,7.92 percent and 6.50 percent respectively.(2)The expansion rate and intensity of urban built-up areas in Hefei metropolitan area in the four stages of 2000—2005,2006—2010,2011—2015 and 2016—2020,except that the expansion rate of Tongcheng City in 2006—2010 and Bengbu City in 2016—2020 showed negative growth,the rest of the cities maintaining growth,but the growth mode generally increased first and then decreased.At the same time,the expansion intensity of Tongcheng city from 2006 to 2010 and Bengbu City from 2016 to 2020 also showed negative growth.
作者
吴九兴
王睿涵
WUJiu-xing;WANGRui-han(School of Geography and Tourism,Anhui Normal University,Wuhu 241002,Anhui,China)
出处
《国土资源科技管理》
2022年第6期44-55,共12页
Scientific and Technological Management of Land and Resources
基金
安徽省自然科学基金面上项目(2208085MD86)。
关键词
城市用地城市扩张
时空特征
合肥都市圈
urban land
urban expansion
spatial-temporal change characteristics
HeFei Metropolitan Area
作者简介
吴九兴(1980-),男,博士,副教授,硕士生导师,从事城乡发展与土地利用研究。E-mail:wujiuxing@163.com;通信作者:王睿涵(2001-),女,从事国土规划与空间治理研究。E-mail:1903992021@qq.com。
