城市地表温度与关键景观要素的关系

被引:29
|
作者
曹璐 [1 ]
胡瀚文 [1 ]
孟宪磊 [1 ]
李俊祥 [1 ,2 ]
机构
[1] 华东师范大学环境科学系
[2] 上海市城市化生态过程与生态恢复重点实验室
关键词
地表温度; 不透水面率; 归一化差值植被指数; 改进的归一化差值水体指数; 城市热岛;
D O I
10.13292/j.1000-4890.2011.0317
中图分类号
P901 [景观学、区域论];
学科分类号
0705 ; 070501 ;
摘要
利用Landsat ETM+遥感影像,提取上海市外环线范围内的地表温度、不透水面率、归一化差值植被指数、改进的归一化差异水体指数,定量研究地表温度与城市关键景观类型之间的关系。结果表明:地表温度与不透水面率呈显著的线性正相关(R2=0.837);地表温度与归一化差值植被指数和改进的归一化差异水体指数呈非线性关系,但地表温度与正的归一化差值植被指数和正的改进的归一化差值水体指数呈显著线性关系。鉴于归一化差值植被指数和改进的归一化差异水体指数大于0时才能真正代表植被和水体,因此,建议今后研究地表温度时使用正的归一化差值植被指数和改进的归一化差异水体指数;地表温度与不透水面率、归一化差值植被指数和改进的归一化差值水体指数的多元线性回归分析表明,不透水面起着增温作用,植被、水体起降温作用,植被较水体的降温作用大。
引用
收藏
页码:2329 / 2334
页数:6
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