在城市土地使用模式下,NDVI和LST之间的关系的空间异质性 - - 上海的案例研究 (2000-2024)
Ting Zhang1, Ran Xu2, Jienan Ye3
1School of Art, Wuxi Taihu University, N.68 Qianrong Road, Wuxi, 214064, Jiangsu, China.
Environmental monitoring and assessment
|January 26, 2026
概括
城市绿地显著调节土地表面温度 (LST) 和城市热岛效应. 加强建筑区的绿色基础设施对于气候行动和城市规划至关重要.
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:
- 加快的城市化改变了土地使用/土地覆盖 (LULC),影响了土地表面温度 (LST) 和城市热岛 (UHI) 效应.
- 通过正常化差异植被指数 (NDVI) 测量的城市绿地对于调节城市热环境至关重要.
研究的目的:
- 分析NDVI在上海 (2000-2024) 的各种LULC类型中对LST的非线性影响和空间异质性.
- 为城市绿色规划和气候适应战略提供定量证据,支持SDG 13.
主要方法:
- 利用了2000-2024年上海的遥感数据.
- 使用CatBoost模型和SHAP方法来评估NDVI对LST的边际影响.
- 在不同的LULC-NDVI场景下模拟LST变化.
主要成果:
- 在LST上NDVI的冷却效应在陆地类型之间有非线性变化,具有值特征.
- 建筑土地显示在NDVI 0.15-0.35处的峰值冷却灵敏度;植被土地显示和.
- 水体对NDVI不敏感,而其他土地类型显示不确定性.
结论:
- 增加城市绿色空间,特别是在建筑区,有效地减轻UHI.
- 未来的绿色基础设施规划应优先考虑覆盖率较低的地区,并优化高植被区域.
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