摘要
鉴于目前港口城市扩张对生态影响定量研究的不足,基于1990、2000、2010和2015年4期Landsat影像,利用CART决策树及空间分析方法,探讨东南亚曼谷、雅加达、海防市3座港口城市25年间土地利用变化的特点和城市扩张带来的生态影响。结果表明:1)3座城市建设用地扩张迅速,1990年和2015年平均占比分别为7.3%和24.9%,最低和最高增幅分别为13.2%和21.2%;2)1990—2015年间,曼谷和海防市的主要土地利用类型均为农田,占比分别为41%~67%和25%~36%;雅加达的主要土地利用类型为森林,占比为40%~56%;3)1990—2015年间,3座港口城市建设用地面积分别增长了1.7、2.6和15倍,大量的农田和森林转化为建设用地;雅加达红树林大量流失,1990—2010年减少了81.9%,海防市在1990—2015年间养殖塘面积增长了82.5%。
In view of the current lack of quantitative research on the ecological impact of urban expansion in port cities,the CART classification and spatial analysis method were used to analyze the land use change and ecological impacts of urban expansion in the three port cities of Bangkok,Jakarta and Haiphong in Southeast Asia during 1990 and 2015 based on Landsat images.The results showed that:1)The built-up area of the three cities has expanded rapidly,with the average 7.3%and 24.9%in 1990 and 2015,respectively;the lowest and highest growth rates of built-up area were 13.2%and 21.2%,respectively.2)During 1990 and 2015,farmland dominated in Bangkok and Haiphong,with a farmland occupation ratio of 41%to 67%and 25%to 36%,respectively.Forest is the main land use type in Jakarta,accounting for 40%to 56%.3)During 1990 and 2015,the built-up area in Bangkok,Jakarta,and Haiphong increased by 1.7 times,2.6 times,and 15 times,respectively,and a large amount of farmland and forests were converted into built-up area.Jakarta mangroves have been lost a lot,which decreased by 81.9%from 1990 to 2010.The area of aquaculture ponds in Haiphong city increased by 82.5%from 1990 to 2015.
作者
谷雨
闫敏
李通
张丽
GU Yu;YAN Min;LI Tong;ZHANG Li(Shandong Agricultural University,Taian,Shandong 271018,China;Key Laboratory of Digital Earth,Aerospace Information Research Institute,Chinese Academy of Sciences,Beijing 100094,China;Key Laboratory of Earth Observation of Hainan Province,Sanya,Hainan 572000,China;Beijing Institute of Electronic System Engineering,Beijing 100039,China)
出处
《遥感信息》
CSCD
北大核心
2021年第2期81-88,共8页
Remote Sensing Information
基金
中国科学院战略性先导科技专项(A类)资助项目(XDA13020506)
海南省重大科技计划项目(ZDKJ2019006)。
