Impact of vegetation growth on urban surface temperature distribution

8th International Symposium of the Digital Earth

地球科学;计算机科学

Buyadi, S.N.A.^1 ; Mohd, W.M.N.W.^1 ; Misni, A.^1

Faculty of Architecture, Planning and Surveying, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia^1

关键词: Commercial development;    Land surface temperature;    Land use/land cover;    Landsat-5 TM images;    Mono-window algorithms;    NDVI;    Urban heat island;    Urban surface temperature;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/18/1/012104/pdf
DOI  :  10.1088/1755-1315/18/1/012104

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

Earlier studies have indicated that, the temperature distribution in the urban area is significantly warmer than its surrounding suburban areas. The process of urbanization has created urban heat island (UHI). As a city expands, trees are cut down to accommodate commercial development, industrial areas, roads, and suburban growth. Trees or green areas normally play a vital role in mitigating the UHI effects especially in regulating high temperature in saturated urban areas. This study attempts to assess the effects of vegetation growth on land surface temperature (LST) distribution in urban areas. An area within the City of Shah Alam, Selangor has been selected as the study area. Land use/land cover and LST maps of two different dates are generated from Landsat 5 TM images of the year 1991 and 2009. Only five major land cover classes are considered in this study. Mono-window algorithm is used to generate the LST maps. Landsat 5 TM images are also used to generate the NDVI maps. Results from this study have shown that there are significant land use changes within the study area. Although the conversion of green areas into residential and commercial areas significantly increase the LST, matured trees will help to mitigate the effects of UHI.