中国地理科学 ›› 2015, Vol. 25 ›› Issue (4): 389-403.doi: 10.1007/s11769-015-0765-y

• 论文 •    下一篇

Spatial Differences of Coastal Urban Expansion in China from 1970s to 2013

SHI Lifeng1,2, LIU Fang1, ZHANG Zengxiang1, ZHAO Xiaoli1, LIU Bin1, XU Jinyong1, WEN Qingke1, YI Ling1, HU Shunguang1   

  1. 1. Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100101, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • 收稿日期:2014-09-04 修回日期:2014-12-31 出版日期:2015-04-27 发布日期:2015-07-30
  • 通讯作者: LIU Fang. E-mail: liufang@radi.ac.cn E-mail:liufang@radi.ac.cn
  • 基金资助:

    Under the auspices of Young Scientist Fund of National Natural Science Foundation of China (No. 41101148), 'One-Three-Five' Strategic Planning by Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences (No. Y4SG0300CX)

Spatial Differences of Coastal Urban Expansion in China from 1970s to 2013

SHI Lifeng1,2, LIU Fang1, ZHANG Zengxiang1, ZHAO Xiaoli1, LIU Bin1, XU Jinyong1, WEN Qingke1, YI Ling1, HU Shunguang1   

  1. 1. Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100101, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2014-09-04 Revised:2014-12-31 Online:2015-04-27 Published:2015-07-30
  • Contact: LIU Fang. E-mail: liufang@radi.ac.cn E-mail:liufang@radi.ac.cn
  • Supported by:

    Under the auspices of Young Scientist Fund of National Natural Science Foundation of China (No. 41101148), 'One-Three-Five' Strategic Planning by Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences (No. Y4SG0300CX)

摘要:

As the 'economic engines' of China, coastal cities have developed and expanded considerably since the 1970s. In this study, information on the urban expansion process of Chinese coastal cities from the 1970s to 2013 was retrieved. Through the analysis of stage characteristics, spatial expansion modes, influences on land use, centroid shifts, and spatial morphological evolutions, the spatial differences of coastal urban expansion were revealed. Results indicate that 1) the expansion stages of southern coastal cities are more complex than those of northern coastal cities, and the expansion ranges and speeds of the former are far higher than those of the latter; 2) the spatial expansion of southern coastal cities mostly adopt a single mode, whereas northern coastal cities mostly adopt a mixed mode; 3) significant spatial differences in the occupations of different land sources exist between the south and the north along the coastline; 4) the centroid of coastal cities tends to migrate toward the coastline, and the centroid shift distances of southern coastal cities are clearly higher than those of northern coastal cities; and 5) the spatial morphology of southern coastal cities tends to be compact, whereas that of northern coastal cities tends to be loose. Policies have a powerful significance in terms of guiding urban expansion and its spatial differences in coastal cities. Urban expansion in coastal cities will encounter new opportunities and challenges under the guidance of new types of urbanization strategies.

关键词: urban expansion, spatial difference, coastal cities, remote sensing, China

Abstract:

As the 'economic engines' of China, coastal cities have developed and expanded considerably since the 1970s. In this study, information on the urban expansion process of Chinese coastal cities from the 1970s to 2013 was retrieved. Through the analysis of stage characteristics, spatial expansion modes, influences on land use, centroid shifts, and spatial morphological evolutions, the spatial differences of coastal urban expansion were revealed. Results indicate that 1) the expansion stages of southern coastal cities are more complex than those of northern coastal cities, and the expansion ranges and speeds of the former are far higher than those of the latter; 2) the spatial expansion of southern coastal cities mostly adopt a single mode, whereas northern coastal cities mostly adopt a mixed mode; 3) significant spatial differences in the occupations of different land sources exist between the south and the north along the coastline; 4) the centroid of coastal cities tends to migrate toward the coastline, and the centroid shift distances of southern coastal cities are clearly higher than those of northern coastal cities; and 5) the spatial morphology of southern coastal cities tends to be compact, whereas that of northern coastal cities tends to be loose. Policies have a powerful significance in terms of guiding urban expansion and its spatial differences in coastal cities. Urban expansion in coastal cities will encounter new opportunities and challenges under the guidance of new types of urbanization strategies.

Key words: urban expansion, spatial difference, coastal cities, remote sensing, China