Abstract
Rapid urbanization has become a major urban sustainability concern due to environmental impacts, such as the development of urban heat island (UHI) and the reduction of urban security states. To date, most research on urban sustainability development has focused on dynamic change monitoring or UHI state characterization, while there is little literature on UHI change analysis. In addition, there has been little research on the impact of land use and land cover changes (LULCCs) on UHI, especially simulates future trends of LULCCs, UHI change, and dynamic relationship of LULCCs and UHI. The purpose of this research is to design a remote sensing-based framework that investigates and analyzes how the LULCCs in the process of urbanization affected thermal environment. In order to assess and predict the impact of LULCCs on urban heat environment, multitemporal remotely sensed data from 1986 to 2016 were selected as source data, and Geographic Information System (GIS) methods such as the CA-Markov model were employed to construct the proposed framework. The results showed that (1) there has been a substantial strength of urban expansion during the 40-year study period, (2) the farthest distance urban center of gravity moves from north-northeast (NEE) to west-southwest (WSW) direction, (3) the dominate temperature was middle level, sub-high level, and high level in the research area, (4) there was a higher changing frequency and range from east to west, and (5) there was a significant negative correlation between land surface temperature and vegetation and significant positive correlation between temperature and human settlement.
Highlights
Land use and land cover changes (LULCCs), as one of the most significant processes related to earth ecological environment problems and social progress issues [1,2,3,4,5], related to global and regional changes [6, 7], have largely affected earth biochemical cycle [8, 9], sustainable use of resources [10], biodiversity [11], and urban planning and policymaking [12]
As a specific type of LULCCs, urban sprawl which plays an important role in urban intelligent growth and modernization is a sign of development and progress of human civilization and urbanization [13]
60% of the human population will live in cities by 2030 [14] which results in increasing replacement of natural landscape by the human-made landscape and will cause the temperature in the urban area to be higher than that in the suburban surrounding or rural area [15], which is known as urban heat island (UHI)
Summary
Land use and land cover changes (LULCCs), as one of the most significant processes related to earth ecological environment problems and social progress issues [1,2,3,4,5], related to global and regional changes [6, 7], have largely affected earth biochemical cycle [8, 9], sustainable use of resources [10], biodiversity [11], and urban planning and policymaking [12]. UHI is realized as a significant factor leading to global warming, heat-related mortality, and nonforecast climate change. A comprehensive study of the influencing factors of the UHI effect is critical for Journal of Sensors formulating reasonable urban planning policies and mitigating the effects of UHI [16,17,18]
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