The Effects of Built-Up and Green Areas on the Land Surface Temperature of the Kuala Lumpur City

Abstract

ABSTRACT:A common consequence of rapid and uncontrollable urbanization is Urban Heat Island (UHI). It occurs due to the negligence on climate behaviour which degrades the quality of urban climate condition. Recently, addressing urban climate in urban planning through mapping has received worldwide attention. Therefore, the need to identify the significant factors is a must. This study aims to analyse the relationships between Land Surface Temperature (LST) and two urban parameters namely built-up and green areas. Geographical Information System (GIS) and remote sensing techniques were used to prepare the necessary data layers required for this study. The built-up and the green areas were extracted from Landsat 8 satellite images either using the Normalized Difference Built-Up Index (NDBI), Normalized Difference Vegetation Index (NDVI) or Modified Normalize Difference Water Index (MNDWI) algorithms, while the mono-window algorithm was used to retrieve the Land Surface Temperature (LST). Correlation analysis and Multi-Linear Regression (MLR) model were applied to quantitatively analyse the effects of the urban parameters. From the study, it was found that the two urban parameters have significant effects on the LST of Kuala Lumpur City. The built-up areas have greater influence on the LST as compared to the green areas. The built-up areas tend to increase the LST while green areas especially the densely vegetated areas help to reduce the LST within an urban areas. Future studies should focus on improving existing urban climatic model by including other urban parameters.

LULC dynamics and the effects of urban green spaces in cooling and mitigating micro-climate change and urban heat island effects: a case study in Addis Ababa City, Ethiopia

“…While a Mature green cover needs to be planted and maintained within an area to balance the negative effect of the built-up area. This result is in line with (Isa 2017) point out that the two urban parameters NDVI and NDBI have significant effects on the LST; and confirmed that built-up areas have a greater influence on the LST as compared to the green areas.…”

Urban land use, land cover change and urban microclimate dynamics in Addis Ababa, Ethiopia.

“…A mature green cover needs to be planted and maintained within an area to balance the negative effect of the built-up area. This result is in line with that of Isa et al (2017), who noted that the two urban parameters NDVI and NDBI have significant effects on the LST and confirmed that built-up areas have a greater influence on the LST than green areas.…”

“…area. This result is in line with that of Isa et al (2017), who noted that the two urban parameters NDVI and NDBI have significant effects on the LST and confirmed that built-up areas have a greater influence on the LST than green areas.…”

Modelo de regressão para identificação de ilha de calor

“…Por sua vez, o número de variáveis consideradas variou entre os diferentes trabalhos. Observou-se que, de um modo geral, ocorreu a avaliação entre duas variáveis dependentes (Li et al, 2017;Isa;Wan Mohd;Salleh, 2017;Agathangelidis;Cartalis;Santamouris, 2020;NGUYEN, 2020) e 36 (Alonso;Renard, 2020). A Figura 10 apresenta a distribuição do número de variáveis na amostra aderente.…”