人类还是气候? 通过遥感数据区分湖泊储存的人类和气候驱动因素,通过遥感数据对空间视角的变化进行区分
1Geography Department, Physical Geography Division, Bursa Uludağ University, Bursa, Turkey.
The Science of the total environment
|November 30, 2023
概括
全球湖泊储量变化是由降水和人类影响驱动的. 降水在北美和东非显著影响湖泊的增加,而在其他地区,人类活动和降雨减少的影响会减少.
科学领域:
- 水文学 水文学
- 环境科学 环境科学
- 遥感 遥感 遥感 遥感
背景情况:
- 湖泊储存是陆地水系统的关键组成部分.
- 全球范围内对湖泊储量变化及其驱动因素的空间分析仍未得到充分量化.
研究的目的:
- 通过远程传感数据调查全球湖泊储存变化.
- 识别和空间分析这些变化的关键驱动因素 (降水和人类足迹).
主要方法:
- 分析了372个湖泊 (1992-2019) 的遥感数据.
- 使用HydroSHED进行流域提取和Köppen-Geiger进行气候分类.
- 应用曼-肯德尔和森的斜率趋势分析到湖泊储存和降水数据.
- 构建了双变量地图,以将储存趋势与降水和人类足迹相关联.
主要成果:
- 在北美,东非高地和西藏高原发现了越来越多的湖泊储存热点,主要是由降水驱动的 (西藏除外).
- 在巴西高地,太平洋山脉系统和美国山区间地区确定了减少湖泊储存热点,受人类足迹和降水减少的影响.
- 观察到湖泊储存和降水在北方/山区低人为影响的地区之间有线性关系.
结论:
- 降水是湖泊储量变化的主要驱动因素,特别是在某些地区.
- 人类足迹显著影响湖泊储量变化,特别是在平原和干旱/温带气候地区.
- 了解这些驱动因素对于有效管理水资源和适应气候变化至关重要.
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