趋势分析和表面温度与植被状况之间的相互作用:不同植被类型的不同反应
Samaneh Afshari1, Reza Sarli2, Ahmad Abbasnezhad Alchin1
1Department of Forestry and Forest Economics, Faculty of Natural Resources, University of Tehran, Karaj, 1417643184, Iran.
Environmental monitoring and assessment
|February 13, 2025
概括
在Arasbaran生物圈保护区,植被条件和土地表面温度 (LST) 正在增加,森林显示出最显著的绿化和温度变化. 茂密的森林有助于缓解气温上升.
科学领域:
- 地球和环境科学 地球和环境科学
- 遥感 遥感 遥感 遥感
- 生态生态学 生态生态学
背景情况:
- 气候变化影响土地表面温度 (LST) 和植被健康.
- 植被通过调节表面能量平衡来影响LST.
- 这些相互作用是特定于区域和植被类型的.
研究的目的:
- 检查植被条件和LST的长期趋势.
- 在Arasbaran生物圈保护区的不同植被类型中调查植被-LST相互作用.
主要方法:
- 关于植物分类的Sentinel-2数据和随机森林模型.
- 协调的Landsat数据 (1987-2023) 用于对NDVI,NDWI和LST的时间序列分析.
- 空间统计分析以评估趋势和相关性.
主要成果:
- 在各种植被类型中观察到NDVI,NDWI和LST的显著空间和时间变化.
- 密集/稀疏森林的植被条件波动性最高;草原的波动性最低.
- 总体而言,NDVI,NDWI和LST的总体上升趋势,在密集森林中最明显.
- 植被指数 (NDVI,NDWI) 和LST之间存在强烈的负相关性,特别是在耕地.
结论:
- 在Arasbaran生物圈保护区,特别是森林中,绿化趋势的证据.
- 森林和茂密的植被在缓解温度上升方面发挥着至关重要的作用.
- 调查结果为当地土地管理和气候适应决策提供了信息.
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