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气候变化和人类活动对湖热带状态的多重影响
Ge Xie1,2, Yibo Zhang2,3, Qing Wang1
1School of Geosciences, Yangtze University, Wuhan, China.
Global change biology
|September 25, 2025
概括
全球湖泊水质正在恶化,由于气候变化和人类活动,全球的热量状态指数 (TSI) 正在增加. 这项研究开发了一种新的模型来跟踪这些变化,并确定湖泊缩的关键驱动因素.
科学领域:
- 环境科学 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:
- 热带状态指数 (TSI) 对于评估湖水质量至关重要.
- 全球湖 TSI 受气候变化和人类活动的重大影响,但机制尚未完全理解.
研究的目的:
- 开发一个通用的 TSI 估计模型,整合半分析算法和机器学习.
- 重建一个21年的全球湖泊 TSI 时间序列,并分析趋势和促成因素.
主要方法:
- 使用3756个现场测量和遥感数据开发了一个通用的 TSI 估计模型.
- 集成的半分析算法与机器学习技术,以提高预测性能 (R2=0.77,RMSE=8.25).
- 在21年期间 (2003-2023) 将模型应用于14,189个全球湖泊 (≥10平方公里).
主要成果:
- 全球平均 TSI 值为 54.07±0.31,其中 20.2% 的湖泊是超的.
- 观察到一个显著的全球 TSI 增长趋势,每十年为 0.19 (p<0.01).
- 气候变暖,增加的太阳辐射,降水,城市化,农业扩张和肥料 (尤其是酸盐) 的使用有助于增加TSI,而植被增长减轻了TSI.
结论:
- 远程传感对于大规模的肥胖化评估是有价值的.
- 了解 TSI 变化的驱动因素对于可持续的湖泊管理至关重要.
- 开发的模型为监测环境变化下的全球湖泊水质提供了一个强大的工具.
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