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生态学杂志 ›› 2004, Vol. ›› Issue (1): 44-47.

• 研究报告 • 上一篇    下一篇

基于遥感与GIS的中国城镇用地扩展特征

田光进, 庄大方   

  1. 中国科学院地理科学与资源研究所, 北京, 100101
  • 收稿日期:2002-10-21 修回日期:2002-11-19 出版日期:2004-02-10
  • 通讯作者: 田光进,男,1970年生,博士后,主要从事遥感、GIS、土地利用、景观生态学等方面的研究,目前已在SSCI及国内核心期刊发表论文10多篇.
  • 基金资助:
    中国科学院知识创新工程重大项目(KZCX2-308、KZCX1-Y-02)

Spatial characteristics of urban expansion in China based on remote sensing and GIS

TIAN Guangjin, ZHUANG Dafang   

  1. Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
  • Received:2002-10-21 Revised:2002-11-19 Online:2004-02-10

摘要: 利用中国1990~2000年土地利用矢量数据和自然区划图,将中国分为6级城镇用地区。第一级城镇用地分类包括辽东胶东山地丘陵、华北平原、鲁中山地丘陵、淮河及长江中下游平原、粤桂闽丘陵平原、华北山地丘陵。这些地区城镇用地比重高,城镇扩展速度快,城镇扩展面积占全国城镇扩展面积的7.147%,城镇扩展造成耕地面积减少占全国的69.88%。城镇扩展占用的主要是耕地资源,占其扩展面积的78.96%;其次农村居民点用地占10.2%,林地占4.48%,草地占2.6%,水体占1.56%,独立工矿用地占1.43%,未利用地占0.43%。城镇居民点用地扩展占用大量的耕地资源,从而造成耕地资源的大量减少,威胁中国的粮食安全。

关键词: 镉, 黑土, 棕壤, 吸附反应, 热力学, 化学动力学

Abstract: Five urban area were classified by the land use vector data and natural zoning map of China during 1990~2000. The first grade urban area included East Liaoning and East Shandong mountain and upland, North China plain, Middle Shandong mountain and upland, Huaihe basin and middle and lower reaches of Yangtze River, Guangdong, Guangxi and Fujian mountain plain, and North China mountain upland. The urban landuse percentage of these area and the speed of urban expansion were higher. The urban expansion in these area amounted to 71.47% of the total expansion of China, and the loss of cultivated land was 69.88% of the total,among which, North China was 24.54%, and Huaihe basin and middle, lower reaches of Yangtze River was 20.15%. The major source of urban land was derived from cultivated land and the percentage was 78.96%. Agreat amount of cultivated land will be lost by urban expansion,which will threaten the grain safety in China.

Key words: Cadmium, Phaeozem, Burozem, Adsorption reaction, Thermodynamics, Chemical kinetics

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