A new incubation and measurement approach to estimate the temperature response of soil organic matter decomposition

doi:10.1016/j.soilbio.2019.107596

	A new incubation and measurement approach to estimate the temperature response of soil organic matter decomposition
	Liu, Yuan 1,2; He, Nianpeng 1,2,3,4; Xu, Li 1; Tian, Jing 1; Gao, Yang 1,2; Zheng, Shuai 5; Wang, Qing 1; Wen, Xuefa 1,2; Xu, Xingliang 1; Yakov, Kuzyakov 6,7,8
刊名	SOIL BIOLOGY & BIOCHEMISTRY
	2019-11-01
卷号	138 页码:8
关键词	Microbial adaption Substrates depletion Soil organic matter decomposition Temperature sensitivity
ISSN号	0038-0717
DOI	10.1016/j.soilbio.2019.107596
通讯作者	He, Nianpeng(henp@igsnrr.ac.cn)
英文摘要	A reliable and precise estimate of the temperature sensitivity (Q(10)) of soil organic matter (SOM) decomposition is critical to predict feedbacks between the global carbon (C) cycle and climate change. In this study, we first summarize two commonly used approaches for estimating Q(10) (Approach A: constant temperature incubation and discontinuous measurements, CDM model; Approach B: varying temperature incubation and discontinuous measurements, VDM model). We then introduced a newly developed approach (Approach C, VCM model) that combines rapidly varying temperature incubations and continuous measurements of SOM decomposition rates (R-s) that may be more realistic and suitable for Q(10) estimation, especially for large scale estimation. Then, we conducted a 26-day incubation experiment using three different soils to compare the performance of these three approaches for estimating Q(10) using R-2 and P-values as indicators. Our results demonstrate that the fitting goodness of the exponential model was consistently higher for Approach C, with higher R-2 values, lower confidence intervals, and lower P-values in almost all cases compared with Approaches A and B. Furthermore, results showed that Approaches A and B underestimated the Q(10) value by 9.5-13% and 2.9-5.7%, respectively, in three different soils throughout the entire incubation period. Compared with traditional commonly used methods, the newly developed Approach C (VCM model) provides a more accurate and rapid estimation of the temperature response of SOM decomposition and can be used for large-scale estimation of Q(10).
资助项目	Natural Science Foundation of China[31770655] ; Natural Science Foundation of China[41571130043] ; National Key R&D Program of China[2016YFC0500102] ; Program of Youth Innovation Research Team Project[LENOM2016Q0005]
WOS关键词	MICROBIAL RESPIRATION ; HETEROTROPHIC RESPIRATION ; CARBON DECOMPOSITION ; SENSITIVITY ; DEPENDENCE ; FEEDBACKS ; TURNOVER ; PATTERNS ; FORESTS ; QUALITY
WOS研究方向	Agriculture
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000495519900015
资助机构	Natural Science Foundation of China ; National Key R&D Program of China ; Program of Youth Innovation Research Team Project
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/131848]
专题	中国科学院地理科学与资源研究所
通讯作者	He, Nianpeng
作者单位	1.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 3.Northeast Normal Univ, Inst Grassland Sci, Changchun 130024, Peoples R China 4.Minist Educ, Key Lab Vegetat Ecol, Changchun 130024, Peoples R China 5.Northeast Normal Univ, State Environm Protect Key Lab Wetland Ecol & Veg, Changchun 130117, Jilin, Peoples R China 6.Univ Goettingen, Dept Agr Soil Sci, Dept Soil Sci Temperate Ecosyst, D-37077 Gottingen, Germany 7.RUDN Univ, Agrotechnol Inst, Moscow, Russia 8.Kazan Fed Univ, Inst Environm Sci, Kazan 420049, Russia
推荐引用方式 GB/T 7714	Liu, Yuan,He, Nianpeng,Xu, Li,et al. A new incubation and measurement approach to estimate the temperature response of soil organic matter decomposition[J]. SOIL BIOLOGY & BIOCHEMISTRY,2019,138:8.
APA	Liu, Yuan.,He, Nianpeng.,Xu, Li.,Tian, Jing.,Gao, Yang.,...&Yakov, Kuzyakov.(2019).A new incubation and measurement approach to estimate the temperature response of soil organic matter decomposition.SOIL BIOLOGY & BIOCHEMISTRY,138,8.
MLA	Liu, Yuan,et al."A new incubation and measurement approach to estimate the temperature response of soil organic matter decomposition".SOIL BIOLOGY & BIOCHEMISTRY 138(2019):8.