摘要
随着人类社会的发展,城市的规模也不断扩张。持续加速的城市化对城市气候及环境产生了深远的影响。本次研究采用遥感与GIS相结合的方法来分析都江堰市城市热环境的时空变化。根据1994和2007年两个时相的LandSatTM影像提取了研究区的土地覆盖、亮温信息和植被覆盖信息。通过统计分析和空间分析对这13年来都江堰的热岛时空变化及其与土地覆盖和植被覆盖变化的关系进行了深入研究。分析结果表明,城市热岛与城区的空间分布之间存在明显的一致性,与植被覆盖有较强的负相关关系。
With the development of human society and city size expansion,acceleration of urbanization had a profound impact on urban climate and the environment.In this research,RS and GIS technologies were utilized to quantitatively analyze the thermal spatial and temporal distribution.LandsatTM images obtained in 1994 and 2007 were selected to derive brightness temperatures,NDVI maps and land cover maps.Then,statistics and spacial analysis were conducted to investigate the relationship between UHI,land cover and NDVI in the 13 years.This research showed that there is a coherence relationship between urban thermal patterns and urban spatial distribution.There is also a negative correlation toward vegetation cover.
出处
《地球与环境》
CAS
CSCD
北大核心
2012年第3期417-422,共6页
Earth and Environment
基金
国家自然科学基金(40972225
41101174)
成都理工大学青年科学基金项目(2010QJ08)
成都理工大学高层次人才科研启动基金(HJ0070)
关键词
RS
亮度温度
土地覆盖
NDVI
remote sensing
brightness temperature
land cover
NDVI
