地理学报 ›› 2005, Vol. 60 ›› Issue (5): 761-770.doi: 10.11821/xb200505007

• 环境演变与土地利用 • 上一篇    下一篇

珠江三角洲土地覆盖变化对地表温度的影响

钱乐祥1,2, 丁圣彦2   

  1. 1. 广州大学地理科学学院,广州 510405;
    2. 河南大学环境与规划学院,开封 475001
  • 收稿日期:2005-03-22 修回日期:2005-06-15 出版日期:2005-09-25 发布日期:2010-09-09
  • 作者简介:钱乐祥 (1963-), 男, 教授, 博士生导师, 中国地理学会会员, 主要研究方向为资源环境、遥感信息模型及GIS应用。E-mail: lxqian@henu.edu.cn
  • 基金资助:

    河南省高等学校创新人才培养对象基金项目;广州大学引进人才科研启动基金项目

Influence of Land Cover Change on Land Surface Temperature in Zhujiang Delta

QIAN Lexiang1,2, DING Shengyan2   

  1. 1. School of Geographical Sciences, Guangzhou University, Guangzhou 510405, China;
    2. College of Environment & Planning, Henan University, Kaifeng 475001, China
  • Received:2005-03-22 Revised:2005-06-15 Online:2005-09-25 Published:2010-09-09
  • Supported by:

    Henan Innovation Talents Fund for University; Guangzhou University Scientific Research Fund for Person with Ability Indraught

摘要:

由于经济的快速增长,1978年以来的25年中,珠江三角洲地区的土地覆盖变化,特别是城市扩展速度非常之快。通过把遥感和地理信息系统相结合,研究了土地覆盖变化及城市增长状况,并且评估了城市增长对地表温度的影响。利用陆地卫星多时段数据监测了土地利用和土地覆盖变化;通过陆地卫星热红外单波段反演了地表温度,研究了土地覆盖变化特别是城市增长对地表温度的影响。结果发现,珠江三角洲地区土地覆盖变化明显,城市增长显著且不平衡。城市的发展使城市化地区的地表温度提高了8.9K。研究表明,遥感和地理信息系统的结合,在监测和分析土地覆盖变化,特别是城市增长状况以及评估城市化对地表温度的影响方面,是十分有效的。

关键词: 土地覆盖变化, 地表温度, 珠江三角洲, 陆地卫星TM/ETM

Abstract:

The Zhujiang Delta has experienced a rapid land cover change, especially urban expansion over the past 25 years due to accelerated economic growth. This paper reports an investigation into the application of the integration of remote sensing and geographic information systems (GIS) for detecting land cover change and urban growth, and assessing their impact on land surface temperature in the region. Remote sensing techniques were used to carry out land use/cover change detection by using multitemporal Landsat TM/ETM data, and retrieve out the land surface temperature by using single Landsat TM/ETM 6 thermal infrared data. The integration of remote sensing and GIS was further applied to examine the impact of land cover change and urban growth on land surface temperatures. The results revealed a notable and uneven urban growth in the study area. This urban development has raised land surface radiant temperature by 8.9K in the urbanized area. The integration of remote sensing and GIS was found to be effective in monitoring and analyzing urban growth patterns, and in evaluating urbanization impact on land surface temperature.

Key words: land cover change, land surface temperature, Zhujiang Delta, Landsat TM/ETM