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量化气候变化和区域人类对印度西北部植被动态的影响
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; Haryana Forest Department (HFD), Government of Haryana, Panchkula, 134109, India.
Environmental research
|July 7, 2023
概括
印度哈里亚纳州的植被呈现出相反的趋势:由于气候变化而在高海拔地区增加,而由于人类活动影响降雨和土壤水分而在平原地区减少.
科学领域:
- 环境科学 环境科学
- 遥感 遥感 遥感 遥感
- 气候变化研究 气候变化研究
背景情况:
- 植被覆盖的动态对于生态系统健康和气候调节至关重要.
- 印度哈里亚纳州面临着复杂的环境挑战,影响其植被.
- 了解植被变化的驱动因素对于可持续的土地管理至关重要.
研究的目的:
- 分析2000-2022年哈里亚纳州植被覆盖的时空趋势.
- 研究气候变化和人类活动对植被动态的影响.
- 根据高度区分气候变化和人类活动的影响.
主要方法:
- 使用了MODIS EVI,CHIRPS降雨量,MODIS LST,PET,GWS,SM以及夜间照明数据 (2000-2022年) 的数据.
- 在谷歌地球引擎上应用非参数统计,相关性和剩余趋势分析.
- 量化趋势和植被变化归因于气候变化 (CC) 和人类活动 (HA).
主要成果:
- 高海拔地区的降雨量增加,植被覆盖面增加,LST减少.
- 平原地区的LST变暖,植被减少,降雨量,GWS和SM减少,与PET增加有关.
- 人类活动每年显著减少地下水储量 (GSW) 和土壤水分 (SM).
结论:
- 气候变化和人类活动对哈里亚纳州高原地区的植被覆盖有不同的影响.
- 在较高的海拔地区,气候变化是植被增加的主要驱动因素 (85%),人类活动贡献了15%.
- 在较低的海拔地区,人类活动是植被减少的主要原因 (79%),需要有针对性的管理策略.
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