Scholarlink

<p>Land Surface Temperature (LST) and Urban Heat Islands (UHI) are increasing consequences of global climate change addressing the Sustainable Development Goal (SDG11) of Resilient Cities. Rising LST in cities poses a significant threat to environmental sustainability necessitating the need for its evaluation with effective mitigation. From this perspective, the current research aimed to investigate the three decadal (1992 to 2022) change in LCLU dynamics and LST (°C) using Landsat 5, 7, and 8 satellite data in Tehsil Bahawalpur of Punjab, Pakistan. Urban Thermal Field Variance Index (UTFVI) was calculated to evaluate the ecological impacts of LST and UHIs. Results of the study from Random Forest (RF) classification indicated a 16% gain in built-up land use at the expense of -12% loss in vegetation over three decades. LST of the region experienced a maximum increase from 38 °C (UHI = 3.6) in 1992 to 41 °C (UHI = 3.7) in 2022 for built and barren land use. UTFVI analysis revealed that 6% of the total land use in 2022 experienced ‘bad’ ecological quality with a strong UHI phenomenon, and UTFVI ranged from 0.01 to 0.015. Moreover, in 2022, 11% of the total land experienced the ‘worse’ to ‘worst’ ecological quality, with UTFVI &gt; 0.015. The empirical findings of the study reveal a poor ecological quality in urban center and surrounding barren land use. It implies the urgent need of urban heat mitigation through development of green infrastructure and sustainable land use planning.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Dynamics of land cover/land use with heat islands phenomenon and its ecological evaluation using remote sensing data (1992–2022)

  • 期刊论文

  • 发表日期：

    2025年5月6日

查看全文
  • Noreena,
  • Muhammad Farhan Ul Moazzam,
  • Muhammad Jamil,
  • Sana Arshad

摘要

Land Surface Temperature (LST) and Urban Heat Islands (UHI) are increasing consequences of global climate change addressing the Sustainable Development Goal (SDG11) of Resilient Cities. Rising LST in cities poses a significant threat to environmental sustainability necessitating the need for its evaluation with effective mitigation. From this perspective, the current research aimed to investigate the three decadal (1992 to 2022) change in LCLU dynamics and LST (°C) using Landsat 5, 7, and 8 satellite data in Tehsil Bahawalpur of Punjab, Pakistan. Urban Thermal Field Variance Index (UTFVI) was calculated to evaluate the ecological impacts of LST and UHIs. Results of the study from Random Forest (RF) classification indicated a 16% gain in built-up land use at the expense of -12% loss in vegetation over three decades. LST of the region experienced a maximum increase from 38 °C (UHI = 3.6) in 1992 to 41 °C (UHI = 3.7) in 2022 for built and barren land use. UTFVI analysis revealed that 6% of the total land use in 2022 experienced ‘bad’ ecological quality with a strong UHI phenomenon, and UTFVI ranged from 0.01 to 0.015. Moreover, in 2022, 11% of the total land experienced the ‘worse’ to ‘worst’ ecological quality, with UTFVI > 0.015. The empirical findings of the study reveal a poor ecological quality in urban center and surrounding barren land use. It implies the urgent need of urban heat mitigation through development of green infrastructure and sustainable land use planning.