量化气候和人为因素对植被的反应,在黄河盆地,中国,植被指数变异的正常化差异,中国
Zhilei Yu1,2, Ligen Wang1, Junfei Yan1,3
1School of Water Conservancy and Transportation, Zhengzhou University, Zhengzhou, China.
Frontiers in plant science
|March 16, 2026
概括
人类活动是黄河盆地植被变绿的主要驱动因素,占变化的65%. 气候变化也影响了植被,特别是在河流中.
科学领域:
- 环境科学 环境科学
- 生态生态学 生态生态学
- 遥感 遥感 遥感 遥感
背景情况:
- 全球气候变化和人类活动显著影响植被分布.
- 确定植被变化的主要驱动因素至关重要,但具有挑战性.
研究的目的:
- 调查黄河流域 (YRB) 的植被动态.
- 量化气候因素 (有效降水,累积温度) 和人类活动 (城市化,植林,种植) 对植被的影响.
- 确定驱动YRB不同地区植被变化的主要因素.
主要方法:
- 从2001年到2020年使用正常化差异植被指数 (NDVI) 分析植被动态.
- 对有效降雨量 (EFPR),活性累积温度 (ACTE) 和人类活动对NDVI变异的贡献的量化.
- 空间分析以区分各种子盆地 (高山源区,中盆地,下盆地) 和城市地区的驱动因素.
主要成果:
- 年轻人区域表现出广泛的植被绿化,超过90%的地区显示出NDVI趋势的增加.
- 人类活动是植被动态的主要驱动因素,占NDVI变化的65%,而气候因素贡献了35%.
- 观察到区域差异:阿尔卑斯山源地区的气候是主要的,而人类活动在中低盆地占主导地位;城市化导致特定城市聚合区的植被变棕.
结论:
- 气候和人类活动都推动了YRB的植被变化,人类活动在整体上发挥了更重要的作用.
- 驱动因素的影响在地理位置上有所不同,这突显出需要量身定制的管理策略.
- 了解这些驱动因素对于有效的生态保护和河流盆地的可持续发展至关重要.
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