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中国树在不同稳定年龄的碳捕集和储存能力

Xu Li¹, Luis Carlos Ramos Aguila², Donghai Wu²

¹Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; University of Chinese Academy of Sciences, Beijing 100049, China.

The Science of the total environment

|September 11, 2023

概括

在中国南部的中国 (Cunninghamia lanceolata) 森林中,随着年龄的增长,碳储量增加. 碳捕获率最高的发生在中年森林 (15-20岁),对于减缓气候变化至关重要.

科学领域:

林业科学林业科学
生态生态学生态生态学
气候变化研究研究气候变化研究

背景情况:

中国 (Cunninghamia lanceolata) 是中国南部的一个关键的原生针叶树,对植树和碳封存至关重要.
对于气候变化缓解战略来说,了解C. lanceolata森林在不同种群年龄的碳捕获动态至关重要.

研究的目的:

调查C. lanceolata森林在不同种植年龄 (5,10,15,20,30和60年) 的碳储存和封存能力.
确定森林年龄如何影响这些生态系统中碳捕集率.

主要方法:

在六个不同的树位年龄段收集不同森林组件 (树木,树,垃圾,土壤) 的碳库存现场数据.
基于碳库存随时间的变化和标准年龄区间的碳封存率的分析.

主要成果:

随着森林年龄的增长,生态系统的总碳储量显著增加,从5岁的树木中129.11Mg ha-1上升到60岁的树木中348.43Mg ha-1.
C. lanceolata的碳捕捉率通常增加到15-20年的年龄间隔,之后开始下降.
在中年森林中观察到最高的碳捕获率,特别是15至20岁的森林中.

结论:

森林年龄是C. lanceolata生态系统中碳捕集率的重要决定因素.
这些发现为优化植树计划和国家气候变化缓解努力提供了有价值的数据,通过确定碳捕获的最佳森林年龄.

关键词:

大气中的二氧化碳 (CO2)碳水槽的碳排放方式气候变化气候变化气候变化森林年龄森林年龄土壤储存碳的方法

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