sustainability Article Land-Use/Land-Cover Changes and Its Contribution to Urban Heat Island: A Case Study of Islamabad, Pakistan Muhammad Sadiq Khan 1,2, Sami Ullah 3 , Tao Sun 1 , Arif UR Rehman 4 and Liding Chen 1,2,* 1 State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;
[email protected] (M.S.K.);
[email protected] (T.S.) 2 State Key Laboratory of Urban and Regional Ecology, University of Chinese Academy of Sciences, Beijing 100049, China 3 Department of Forestry, Shaheed Benazir Bhutto University, Sheringal 18000, Pakistan;
[email protected] 4 College of Forestry, Beijing Forestry University, Beijing 100083, China;
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[email protected] Received: 15 April 2020; Accepted: 2 May 2020; Published: 9 May 2020 Abstract: One of the essential anthropogenic influences on urban climate is land-use/land-cover (LULC) change due to urbanization, which has a direct impact on land surface temperature (LST). However, LULC changes affect LST, and further, urban heat island (UHI) still needs to be investigated. In this study, we estimated changes in LULC from 1993 to 2018, its warming (positive) and cooling (negative) effect, and their contribution to relative LST (RLST) in the city of Islamabad using satellite remote-sensing data. The LULC was classified using a random forest (RF) classifier, and LST was retrieved by a standardized radiative transfer equation (RTE). Our results reveal that the impervious surfaces has increased by 11.9% on the cost of declining barren land, forest land, grass/agriculture land, and water bodies in the last 26 years.