GEOGRAPHICAL RESEARCH ›› 2003, Vol. 22 ›› Issue (6): 780-788.doi: 10.11821/yj2003060013

• Earth Surface Processes • Previous Articles     Next Articles

Studies on recent built-up land-cover change of urban area in the Pearl River Delta

HU Wei ping1,2,3, YANG Guo qing4, Wu Zhi feng1, HE Jian bang3   

  1. 1. Guangzhou Institute of Geochemistry, CAS, Guangzhou 510630, China;
    2. Department of Geography, South China Normal University, Guangzhou 510631, China;
    3. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijng 100101, China;
    4. School of Resources and Environment, Wuhan University, Wuhan 430072, China
  • Received:2003-01-26 Revised:2003-08-06 Online:2003-12-15 Published:2003-12-15

Abstract:

Urban development is significant during the past two decades in the Pearl River Delta(PRD) Many researchers have studied urban development of partial areas in the PRD from different viewpoints recently, but nobody sdudied the urban land cover change of the PRD from the integrated point of view This paper exemines the built up land cover change of the urban area of the whole Pearl River Delta from 1988 to 1998 TM imageries taken from 1988 to 1998 were used to get the built up area thematic information,and a spatial database of the urban areas in the PRD was set up aided by Arc/Info 8 02 We selected the Maximum Likelihood Classifier(MLC) to extract urban built up area themeatic information The spatial features of built up land cover change in urban area were analysed in detail Firstly, the inner circle and outer circle spatial structure of built up land cover distribution kept relatively stable during the study period The total built up area in inner circle is 83 46% of the whole built up area in the PRD in 1988, and it is 84 18% in 1998 Secondly, the core oriented development and transportation oriented development are remarkble The core urban area such as the Guangzhou Foshan metropolis and Hongkong Shengzhen metropolis developed rapidly The urban area along the lines of the 107 national highway,Guangzhou Shenzhen railway and the Guangzhou Zhuhai section of the 105 national highway grows evidently Thirdly, the spatial distribution of the growth amount of built up area differs from the spatial distribution of the growth speed of the built up area greatly Fourthly, the spatial distribution of the average growth intensity index per year(AGIIPY) was analysed, the results show the high value of the AGIIPY distribution are core oriented and trunk road oriented The main driving factors of urban built up land cover change in the PRD were generally discussed The result shows the correlativity between urban built up area and gross output value of industry in the PRD is notable The urban built up area and the total population also have remarkble correlative relationship The other factors such as transportaion conditions,regional economy and administration are very important for urban development

Key words: Pearl River Delta(PRD), built up land cover change in urban area, spatial features, driving factors

  • F293.2