Climate change-induced spatiotemporal variations of land use land cover by using multitemporal satellite imagery analysis

Abstract

This study examines Islamabad's landscape changes over four decades, attributing land degradation to shifts in land use and cover. Using Landsat imagery from 1980 to 2023, it analyzes urban growth in five categories. By employing the normalized difference vegetation index (NDVI) and normalized difference built-up index (NDBI), it notes built-up areas expanding to 61% by 2023, agricultural land contraction, and fluctuating forest cover. Water bodies and bare land decrease significantly. With high accuracy values, NDVI fluctuates from +0.4523 in 1980 to +0.1596 in 2010, rebounding to +0.4422. Fluctuations in barren soil, vegetation, and built-up areas potentially contribute to temperature and rainfall changes. The study explores LULC and land surface temperature correlation. Surveyed respondents (755) express concerns about environmental changes, anticipating reduced rainfall and increased drought. Valuable for sustainable development goals, the study informs policy formulation for effective urban planning and land use control. HIGHLIGHTS This study unveils Islamabad's four-decade urban expansion and its transformative impact on land use.; This study explores how this growth has led to significant environmental changes, affecting land surface temperature and water resources.; This study highlights the city's growing climate awareness, emphasizing the need for sustainable urban planning.;

Keywords

• climate change implications
• land use land cover change
• landsat imagery
• remote sensing
• sustainable development goals