摘要
以福建省平潭岛为例,利用1990-2013年3期Landsat卫星遥感影像,基于归一化植被指数提取植被覆盖度,利用Qin单窗算法定量反演地表温度.对不同年份的植被覆盖与地表温度的空间变化特征及两者相关性进行分析,以揭示热环境效应的内在机制.研究结果表明:植被覆盖度与地表温度呈较显著负相关,植被覆盖每增加10%,最大可使归一化地表温度降低0.049.2002-2013较1990-2002年时间段的植被覆盖与地表温度变化幅度大.同时,对1990-2013年的植被覆盖变化值与归一化地表温度变化值进行相关性分析,发现变化值之间也具有较显著的相关性,且其相关性为0.513.
Based on 3 Landsat Satellite Images from 1990 to 2013 of Pingtan Island, Fujian province, and retieved vegetation coverage with normalized vegetation index and land surface temperature with Mono-window algorithm respectively. Spatio-temporal variances and the correlation between fractional vegetation cover and land surface temperature in different years was analyzed to reveal the internal mechanism of thermal environmental effects. The results showed that, fractional vegetation cover and land surface temperature had a more significant negative correlation, and each 10% increment in fractional vegetation cover would result in the lowering of local land surface temperature approximately 0. 049. The change range difference of these two factors in 2002 - 2013 was bigger than that in1990 -2002. Meanwhile, taking a correlation analysis of the values of fractional vegetation cover and land surface temperature in 1990 -2013 periods, it suggested that these two had a more significant negative correlation of 0. 513.
出处
《福建师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2016年第1期78-85,共8页
Journal of Fujian Normal University：Natural Science Edition
基金
科技部国际合作专项(247608)
关键词
遥感
植被覆盖
地表温度
平潭岛
remote sensing
fractional vegetation cover
land surface temperature
Pingtan Island
