Kazan Federal University Digital Repository

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

Show simple item record

dc.contributor.author Liu Y.
dc.contributor.author He N.
dc.contributor.author Xu L.
dc.contributor.author Tian J.
dc.contributor.author Gao Y.
dc.contributor.author Zheng S.
dc.contributor.author Wang Q.
dc.contributor.author Wen X.
dc.contributor.author Xu X.
dc.contributor.author Yakov K.
dc.date.accessioned 2020-01-22T20:32:06Z
dc.date.available 2020-01-22T20:32:06Z
dc.date.issued 2019
dc.identifier.issn 0038-0717
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/157912
dc.description.abstract © 2019 Elsevier Ltd A reliable and precise estimate of the temperature sensitivity (Q10) 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 Q10 (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 (Rs) that may be more realistic and suitable for Q10 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 Q10 using R2 and P-values as indicators. Our results demonstrate that the fitting goodness of the exponential model was consistently higher for Approach C, with higher R2 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 Q10 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 Q10.
dc.relation.ispartofseries Soil Biology and Biochemistry
dc.subject Microbial adaption
dc.subject Soil organic matter decomposition
dc.subject Substrates depletion
dc.subject Temperature sensitivity
dc.title A new incubation and measurement approach to estimate the temperature response of soil organic matter decomposition
dc.type Article
dc.relation.ispartofseries-volume 138
dc.collection Публикации сотрудников КФУ
dc.source.id SCOPUS00380717-2019-138-SID85071988424


Files in this item

This item appears in the following Collection(s)

  • Публикации сотрудников КФУ Scopus [22633]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

Show simple item record

Search DSpace


Advanced Search

Browse

My Account