欢迎访问《生态学杂志》官方网站,今天是 分享到:

生态学杂志 ›› 2009, Vol. 28 ›› Issue (11): 2347-2352.

• 研究报告 • 上一篇    下一篇

城镇用地扩张对城市热环境的影响

邓玉娇1**;匡耀求2;单海滨1;王捷纯1   

  1. 1广州气象卫星地面站,广州 510640;2中国科学院广州地球化学研究所,广州 510640
  • 出版日期:2009-11-10 发布日期:2009-11-10

Effects of urban land expansion on urban thermal environment.

DENG Yu-jiao1;KUANG Yao-qiu2;SHAN Hai-bin1;WANG Jie-chun1   

  1. 1Guangzhou Meteorological Satellite Station, Guangzhou 510640, China;2Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
  • Online:2009-11-10 Published:2009-11-10

摘要: 以快速城市化的典型区域广东省东莞市为例,以Landsat/TM、ETM+为主要数据源,采用单窗算法反演地表温度,提出多时相数据标准化处理方法,构建相对热效应指数、热贡献指数、冷贡献指数,定量研究城镇用地扩张对城市热环境的影响。结果表明:1990—2005年,东莞市城镇用地扩张迅猛,高温区由岛状向带状再向面状扩张。城镇用地的相对热效应指数先增大后减小,1990年为0.6,2000年为1.0,2005年为0.6;热贡献指数持续增长,1990年为4.5%、2000年为38.4%,2005年为62.9%;冷贡献指数逐步增长,1990年为1.2%,2000年为1.8%,2005年为6.8%。

关键词: 富营养化, 植物修复, 底泥, 水生植物

Abstract: Taking the rapidly urbanized Dongguan City of Guangdong as a case, and by using Landsat/TM and ETM+ data, the land surface temperature (LST) was retrieved via mono-window algorithm. A standardized method for treating the LST was proposed, and three thermal environment indices (relative thermal effect index, heat contribution index, and cold contribution index) were built to quantitatively study the effects of urban land expansion on urban thermal environment. In 1990-2005, the urban land area in Dongguan had a rapid expansion, and the high temperature zone expanded from island-shape to belt-shape and then to lamina-shape. The relative thermal effect index of urban land decreased after an initial increase, being 0.6 in 1990, 1.0 in 2000, and 0.6 in 2005. The heat contribution index increased persistently, which was 4.5% in 1990, 38.4% in 2000, and 62.9% in 2005, and the cold contribution index increased gradually, which was 1.2% in 1990, 1.8% in 2000, and 6.8% in 2005.

Key words: Eutrophication, Phytoremediation, Sediment, Aquatic plant