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在不同气候变化情景下,中国齐武林森林土壤碳动态的潜在未来变化

Ruosong Qu¹, Shiyi Chen², Kefeng Wang²

¹Key Laboratory of Resource Biology and Biotechnology in Western China (Ministry of Education), Northwest University, Xi'an 710069, China; Northwest Electric Power Design Institute Co., Ltd. of China Power Engineering Consulting Group, China.

The Science of the total environment

|December 1, 2023

概括

低温室气体排放促进了中国齐林森林的土壤碳储存. 较高的排放导致土壤碳损失,强调需要保护这些重要的生态系统.

科学领域:

生态生态学生态生态学
土壤科学土壤科学
气候变化科学气候变化科学

背景情况:

土壤碳 (C) 循环对于陆地生态系统和气候调节至关重要.
土壤微生物是土壤有机碳 (SOC) 动态和气候反的关键驱动因素.
全球变化对土壤C循环过程产生重大影响.

研究的目的:

在各种气候场景下,预测Ziwuling森林地区未来的土壤C动态.
评估不同代表性度路径 (RCP) 对土壤有机碳的影响.
了解垃圾碳和SOC积累之间的关系.

主要方法:

从2021年4月到2022年7月进行了土壤观测和采样.
利用微生物生态模型 (MEND) 来预测未来的土壤C动态.
在RCP2.6,RCP4.5和RCP8.5情景下分析了土壤有机碳 (SOC).

主要成果:

与RCP4.5和RCP8.5.5相比,RCP2.6情景显示了SOC的显著增加.
在RCP2.6.6下观察到总垃圾碳 (L_C) 和SOC之间的正相关性.
低温室气体 (GHG) 排放场景有利于SOC积累,而高温室气体场景导致土壤碳损失更大.

结论:

低温室气体排放场景对于增强齐林森林SOC储存至关重要.
气候变化,特别是全球变暖,对土壤生态系统产生重大影响.
保护洛斯高原的土壤生态系统对于保持碳汇和环境稳定至关重要.

关键词:

碳循环是一个碳循环.气候变化气候变化气候变化微生物分解模型的微生物分解模型有代表性的度途径.土壤有机碳土壤有机碳

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