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在世界上最大的种植园中,土壤功能性碳分量的储存潜力

Siyu Ren^1,2, Hui Wang³, Tao Zhou^1,2

¹Institute of Carbon Neutrality, Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, School of Ecology, Northeast Forestry University, Harbin, 150040, China.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)

|August 8, 2025

概括

种植森林可以增强气候解决方案,但变暖和干燥会减少土壤碳储存. 在种植园中改善土壤有机碳 (SOC) 为全球碳中和目标提供了重大潜力.

科学领域:

林业林业林业林业林业
土壤科学土壤科学
气候变化缓解缓解气候变化缓解

背景情况:

种植森林是关键的自然气候解决方案,但它们的碳吸收能力随着年龄和气候变化而减少.
保持土壤有机碳 (SOC) 对于森林生态系统的长期碳封存至关重要.

研究的目的:

量化植林与自然森林相比,植林中的功能性土壤有机碳 (SOC) 缺乏.
通过管理策略,估计通过种植森林增强SOC储存的潜力.
为改善土壤碳汇提供基于科学的目标.

主要方法:

利用来自中国501个种植森林和564个自然森林的数据.
采用高精度随机森林模型来估计与矿物相关的有机碳 (MAOC) 和有机颗粒碳 (POC) 的储存.
在不同的管理情景下,量化SOC赤字和估计的储存潜力.

主要成果:

气候变暖和干旱增加了自然森林转化为种植园期间的土壤表层MAOC和POC的损失.
与自然森林相比,种植森林表现出显著的SOC赤字,估计为1.872.52 Pg SOC.
确定了最小,中间和雄心勃勃的SOC储存潜力,范围从14.61到29.79 Pg C.

结论:

种植的森林土壤具有大量未开发的碳捕获潜力.
接近自然的管理策略可以增强 SOC 在种植园中的储存.
调查结果为评估SOC基准和目标提供了一个框架,以支持全球碳中和.

关键词:

储存碳是为了储存碳.森林管理是森林的管理.有机碳与矿物相关的有机碳.种植园种植园种植园土壤有机碳土壤有机碳

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