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Updated: Feb 26, 2026

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陆地生态系统的循环响应现场变暖:全球模式和未来趋势
Xudong Wang1,2, Chenrui Ni2, Ziyi Fan2
1Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau, Inner Mongolia Key Laboratory of Grassland Ecology, and School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China.
概括
气候变暖显著加快了循环,增加了排放和营养的可用性. 模型与现场数据有所不同,这凸显了在气候变化研究中更好地整合微生物过程的需要.
科学领域:
- 生态生态学 生态生态学
- 生物地质化学生物地质化学
- 气候科学 气候科学
背景情况:
- 循环对于生态系统的生产力和碳储存至关重要.
- 气候变暖对循环的影响尚未完全理解.
- 现有的模型显示与有关变暖效应的经验数据存在差异.
研究的目的:
- 综合评估陆地循环对气候变暖的全球反应.
- 将经验数据与循环模型模拟 (CLM5-BGC) 进行比较.
- 在变暖条件下确定影响循环的关键驱动因素.
主要方法:
- 汇编了来自413个现场变暖实验的7941个观测的全球数据集.
- 用随机森林回归来进行数据分析.
- 用户社区土地模型 (CLM5-BGC) 模拟进行比较.
主要成果:
- 现场变暖加速了循环,增加了氧化 (N2O) 排放,矿化,化和脱.
- 土壤无机增加,而植物保持稳定.
- 变暖减轻了限,促进了更开放的循环,以土壤水分,生态系统类型和变暖幅度为关键驱动因素.
- 随机森林模型显示,随着气候变暖的大小,N2O排放和化加剧.
- 在CLM5-BGC模拟中,差异很大,显示反应较弱,矿物化的负面变化.
结论:
- 地球上的循环比以前认为的更容易受到气候变暖的影响.
- 模型和数据之间的差异表明当前模型的局限性,特别是在微生物过程方面.
- 整合不同的分析方法对于准确的跨度生态数据合成至关重要.
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