Molecular 14C evidence for contrasting turnover and temperature sensitivity of soil organic matter components

NWIPB OpenIR

	Molecular 14C evidence for contrasting turnover and temperature sensitivity of soil organic matter components
	Jia, Juan; Liu, Zongguang; Haghipour, Negar; Wacker, Lukas; Zhang, Hailong; Sierra, Carlos A.; Ma, Tian; Wang, Yiyun; Chen, Litong; Luo, Ao; Wang, Zhiheng; He, Jin-Sheng; Zhao, Meixun; Eglinton, Timothy I.; Feng, Xiaojuan
	2023
发表期刊	ECOLOGY LETTERS
卷号	26 期号:5 页码:778
摘要	Climate projection requires an accurate understanding for soil organic carbon (SOC) decomposition and its response to warming. An emergent view considers that environmental constraints rather than chemical structure alone control SOC turnover and its temperature sensitivity (i.e., Q(10)), but direct long-term evidence is lacking. Here, using compound-specific radiocarbon analysis of soil profiles along a 3300-km grassland transect, we provide direct evidence for the rapid turnover of lignin-derived phenols compared with slower-cycling molecular components of SOC (i.e., long-chain lipids and black carbon). Furthermore, in contrast to the slow-cycling components whose turnover is strongly modulated by mineral association and exhibits low Q(10), lignin turnover is mainly regulated by temperature and has a high Q(10). Such contrasts resemble those between fast-cycling (i.e., light) and mineral-associated slow-cycling fractions from globally distributed soils. Collectively, our results suggest that warming may greatly accelerate the decomposition of lignin, especially in soils with relatively weak mineral associations.
收录类别	SCIE
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/61673
专题	中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Jia, Juan,Liu, Zongguang,Haghipour, Negar,et al. Molecular 14C evidence for contrasting turnover and temperature sensitivity of soil organic matter components[J]. ECOLOGY LETTERS,2023,26(5):778.
APA	Jia, Juan.,Liu, Zongguang.,Haghipour, Negar.,Wacker, Lukas.,Zhang, Hailong.,...&Feng, Xiaojuan.(2023).Molecular 14C evidence for contrasting turnover and temperature sensitivity of soil organic matter components.ECOLOGY LETTERS,26(5),778.
MLA	Jia, Juan,et al."Molecular 14C evidence for contrasting turnover and temperature sensitivity of soil organic matter components".ECOLOGY LETTERS 26.5(2023):778.