气候变化领域集成服务门户(CCPortal): Reconciling carbon quality with availability predicts temperature sensitivity of global soil carbon mineralization

CCPortal

DOI	10.1073/pnas.2313842121
	Reconciling carbon quality with availability predicts temperature sensitivity of global soil carbon mineralization
	Zhang, Shuai; Wang, Mingming; Xiao, Liujun; Guo, Xiaowei; Zheng, Jinyang; Zhu, Biao; Luo, Zhongkui
发表日期	2024
ISSN	0027-8424
EISSN	1091-6490
起始页码	121
结束页码	11
卷号	121 期号:11
英文摘要	Soil organic carbon (SOC) mineralization is a key component of the global carbon cycle. Its temperature sensitivity Q10 (which is defined as the factor of change in mineralization with a 10 degrees C temperature increase) is crucial for understanding the carbon cycle- climate change feedback but remains uncertain. Here, we demonstrate the universal control of carbon quality- availability tradeoffs on Q10. When carbon availability is not limited, Q10 is controlled by carbon quality; otherwise, substrate availability controls Q10. A model driven by such quality - availability tradeoffs explains 97% of the spatiotemporal variability of Q10 in incubations of soils across the globe and predicts a global Q10 of 2.1 +/- 0.4 (mean +/- one SD) with higher Q10 in northern high- latitude regions. We further reveal that global Q10 is predominantly governed by the mineralization of high- quality carbon. The work provides a foundation for predicting SOC dynamics under climate and land use changes which may alter soil carbon quality and availability.
英文关键词	soil organic carbon; carbon pools; temperature sensitivity; mineralization; incubation
语种	英语
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:001206181800001
来源期刊	PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/292628
作者单位	Zhejiang University; Nanjing Agricultural University; Peking University; Zhejiang University; Zhejiang University
推荐引用方式 GB/T 7714	Zhang, Shuai,Wang, Mingming,Xiao, Liujun,et al. Reconciling carbon quality with availability predicts temperature sensitivity of global soil carbon mineralization[J],2024,121(11).
APA	Zhang, Shuai.,Wang, Mingming.,Xiao, Liujun.,Guo, Xiaowei.,Zheng, Jinyang.,...&Luo, Zhongkui.(2024).Reconciling carbon quality with availability predicts temperature sensitivity of global soil carbon mineralization.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,121(11).
MLA	Zhang, Shuai,et al."Reconciling carbon quality with availability predicts temperature sensitivity of global soil carbon mineralization".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 121.11(2024).