湖北农业科学 ›› 2019, Vol. 58 ›› Issue (16): 41-48.doi: 10.14088/j.cnki.issn0439-8114.2019.16.010

• 资源·环境 • 上一篇    下一篇

基于Landsat遥感数据的城市热岛效应及影响因素——以襄阳市为例

李学敏1, 文力1,2, 王俪璇1   

  1. 1.湖北文理学院资源环境与旅游学院,湖北 襄阳 441053;
    2.中国科学院青藏高原研究所,北京 100101
  • 收稿日期:2018-12-18 出版日期:2019-08-25 发布日期:2019-11-12
  • 通讯作者: 文 力(1980-),男,湖南宁乡人,讲师,博士,主要从事构造地质学和构造地貌学的研究,(电子信箱)31305023@qq.com。
  • 作者简介:李学敏(1997-),女,内蒙古乌兰察布人,在读本科生,(电话)18827555721(电子信箱)1078529547@qq.com
  • 基金资助:
    湖北文理学院大学生创新创业项目(201810519154); 湖北省自然科学基金项目(2014CFB636); 鄂北区域发展研究中心课题(2018JDA008)

Urban heat island effect and its influencing factors based on Landsat remote sensing data:A case of Xiangyang city

LI Xue-min1, WEN Li1,2, WANG Li-xuan1   

  1. 1.College of Resource and Environment and Tourism,Hubei University of Arts and Sciences,Xiangyang 441053,Hubei,China;
    2.Institute of Tibetan Plateau,Chinese Academy of Sciences,Beijing 100101,China
  • Received:2018-12-18 Online:2019-08-25 Published:2019-11-12

摘要: 以Landsat 8 TIRS遥感影像为基础数据,运用遥感技术反演襄阳市地表温度,计算热岛效应强度指数,定量分析襄阳市城市热岛效应的时空分布特征及发展趋势,并结合归一化植被指数(NDVI)、归一化建筑指数(NDBI)与地表温度进行相关性分析,探索地表植被分布状况和建筑密度对城市热岛效应的影响。结果表明,襄阳市的城市热岛效应在2014—2017年逐渐增强,热岛扩散范围主要为城市新建开发区及交通网的延伸区域。城市地表温度与归一化植被指数呈明显负相关关系,与归一化建筑指数呈明显正相关关系,且地表温度与归一化植被指数相关性尤为突出。建议在城市发展建设过程中,加强城市绿化投入,合理增加城市植被覆盖度及适度降低城市建筑密度可缓解城市热岛效应。

关键词: 归一化植被指数, 归一化建筑指数, 地表温度, 城市热岛效应, 襄阳市

Abstract: Based on Landsat 8 TIRS remote sensing image, the surface temperature of Xiangyang city was retrieved by remote sensing technology, and the intensity index of heat island effect was calculated. The spatial and temporal distribution characteristics and development trend of urban heat island effect in Xiangyang city were analyzed quantitatively. The correlation between normalized vegetation index(NDVI), normalized building index(NDBI) and surface temperature were analyzed. The influence of surface vegetation distribution and building density on urban heat island effect was analyzed. The results showed that the urban heat island effect in Xiangyang city gradually strengthens between 2014 and 2017, and the heat island diffusion mainly extends to the new urban development zones and the extension of traffic network. There was a negative correlation between urban surface temperature and normalized vegetation index, and a positive correlation between urban surface temperature and normalized building index, especially between urban surface temperature and normalized vegetation index. It is suggested that in the process of urban development and construction, strengthening urban greening investment, reasonably increasing urban vegetation coverage and moderately reducing urban building density can alleviate the urban heat island effect.

Key words: normalized difference vegetation index, normalized building index, surface temperature, urban heat island effect, Xiangyang city

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