Acta Geographica Sinica ›› 2014, Vol. 69 ›› Issue (7): 883-895.doi: 10.11821/dlxb201407001

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Spatio-temporal characteristics of intra-urban land cover in the cities of China and USA from 1978 to 2010

KUANG Wenhui1, CHI Wenfeng1,2, SHI Wenjiao1   

  1. 1. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2013-12-27 Revised:2014-03-06 Online:2014-07-20 Published:2014-07-20
  • Supported by:
    National High-Tech R&D Program of China, No.2013AA122802; National Natural Science Foundation ofChina, No.41371408; National Basic Research Program of China, No.2010CB95090400, No.2014CB954302;National Key Technology R&D Program, No.2012BAJ15B02

Abstract: Urban land cover has major impacts on urban ecosystem service and inhabitant living environment. Chinese cities' spatio-temporal distribution of impervious surface area and green land shows more remarkable differences than that of USA. This study focused on monitoring and comparing the spatio-temporal dynamics, land cover patterns and characteristics of urban functional regions in six cities located in China and USA, based on Landsat TM/MSS images obtained in 1978, 1990, 2000 and 2010. The study indicated that the three major cities in China were developing with compact forms, but the three major cities of USA have presented dispersed forms during the past 30 years. The proportion of vegetation land of the three cities in the USA was as much as 2.21 times of that in the three China's cites. Land use types of Chinese cities are more complicated with a higher density of impervious surface area. In contrast, the CBD and living areas of American cities were covered by low impervious surface area and high rate of green land, which were relatively independent. This study can make contribution to urban planning and administration for both China and USA.

Key words: China, remote sensing, green land, impervious surface, urban structure, USA