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评估气候和人类活动对印度西孟加拉邦近期植被动态的相对影响
Abhishek Banerjee1, Shichang Kang2, Michael E Meadows3
1State Key Laboratory of Cryospheric Sciences, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Donggang West Rd. 318, Lanzhou, 730000, China.
Environmental research
|February 15, 2024
概括
气候变化和人类活动显著影响印度东部的植被动态. 人类活动主导着城市地区附近的植被变化,而气候变化是高海拔地区和东南地区的主要驱动因素.
科学领域:
- 环境科学 环境科学
- 遥感 遥感 遥感 遥感
- 气候科学 气候科学
背景情况:
- 了解土地利用变化的驱动因素对于可持续的区域管理至关重要.
- 区分气候变化 (CC) 和人类活动 (HA) 对植被的影响至关重要.
研究的目的:
- 调查CC和HA对2000-2022年印度东部植被动态的影响.
- 评估气候和人类因素对植被变化的相对影响.
主要方法:
- 对多个遥感数据集的分析:降水 (CHIRPS),LST,EVI,PET,土壤水分,WorldPop和夜间光线.
- 非参数统计的应用:曼-肯德尔测试和森的斜率估计器.
- 空间相关性分析以确定环境变量与EVI之间的关系.
主要成果:
- 在降水和LST中观察到显著的空间和高度依赖的变化.
- 较高的海拔地区显示出变暖趋势,冬季降水量减少,而某些地区的降水量增加.
- 人类活动是加尔各答附近植被变化的主要驱动因素 (87%),而气候变化则在北部和东南部地区占主导地位 (70-85%).
结论:
- 气候变化和人类活动都是印度东部植被动态的关键驱动因素,它们的相对重要性在空间上有所不同.
- 调查结果为制定针对可持续土地利用和社会水气候系统管理的有针对性的政策提供了关键的见解.
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