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揭示了森林湿地土壤中隐藏的碳

Anthony J Stewart¹, Meghan Halabisky², Chad Babcock³

¹School of Environmental and Forest Sciences, University of Washington, Seattle, Washington, WA, USA. ajs0428@uw.edu.

Nature communications

|January 25, 2024

概括

森林湿地储存了大量的"神秘碳",目前地图上没有找到. 这项研究显示,这些未绘制的碳储存量比以前估计的要大482%,突显了它们的脆弱性.

科学领域:

环境科学环境科学
土壤科学土壤科学
生态生态学生态生态学

背景情况:

内陆湿地是重要的碳汇,占全球土壤有机碳 (SOC) 的30%.
森林湿地含有大量的SOC,通常未被绘制,被称为"神秘碳".
准确地绘制湿地SOC对于了解全球碳循环和保护工作至关重要.

研究的目的:

量化和绘制森林湿地中神秘碳的数量和分布.
将湿地SOC库存估计与现有的全球和国家数据集进行比较.
强调未绘制地图的湿地SOC对保护的重要性.

主要方法:

在霍河流域 (HRW) 的连续高地到湿地的梯度中测量了SOC库存.
SOC被量化到1米的深度.
分析了数据以估计总SOC和湿地特定的SOC库存.

主要成果:

人力资源部的总采集区SOC为5.0TgC,与全球估计相一致.
湿地SOC库存估计大大高于 (1.7 TgC) 比目前的湿地地图 (0.3 TgC).
人权观察湿地中的神秘碳 (未绘制的SOC) 达到1.5TgC,比现有估计增加了482%.

结论:

森林湿地有着巨大的,未被绘制的"神秘碳"储备.
目前的湿地SOC地图大大低估了总的SOC库存.
不受保护和脆弱的湿地含有关键的,未被认可的碳储存库,需要保护注意.

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