使用分割窗口算法探索LULC动态及其与陆地表面温度变化的关系:印度西孟加拉邦巴拉萨特分区的研究
Sanjit Paul1, Sanjib Majumder2, Rupak Ghosh3
1Department of Geography, North Eastern Hill University (NEHU), Shillong, Meghalaya, 793022, India. geosanjit@gmail.com.
Environmental monitoring and assessment
|October 17, 2024
概括
印度的城市化显著增加了陆地表面温度 (LST) 和热岛. 这项研究将土地使用变化与LST变化联系起来,强调风险并建议可持续的城市规划.
科学领域:
- 环境科学 环境科学
- 城市规划 城市规划
- 遥感 遥感 遥感 遥感
背景情况:
- 印度的快速,无计划的城市化和森林覆盖面的减少是印度的关键问题.
- 这些变化导致陆地表面温度 (LST),城市热岛和健康风险的增加.
研究的目的:
- 评估LST与土地使用/土地覆盖 (LULC) 动态之间的相互关系.
- 分析季节性LST变化及其与印度西孟加拉邦土地指数和LULC变化的联系.
主要方法:
- 使用卫星图像提取LST.
- 对季节性LST变化的分析以及与NDVI,NDBI,NDMI和NDWI的关系.
- 从1988年到2023年,对LULC动态的热点分析.
主要成果:
- 建筑面积增加了51%,而地减少了73%.
- 在高密度建筑地区观察到较高的LST变化 (3.41°C).
- 在标准化差异构建指数 (NDBI) 和LST (r2=0.59) 之间发现了正相关性.
结论:
- 结果显示,由LULC动态影响的显著的LST波动,造成气候和健康风险.
- 规划的城市扩建,高效的LULC管理和绿色空间促进是可持续发展的建议.
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