RESEARCH ARTICLE

Differences in SOM Decomposition and Temperature Sensitivity among Soil Aggregate Size Classes in a Temperate Grasslands Qing Wang1,2, Dan Wang1, Xuefa Wen2, Guirui Yu2, Nianpeng He2*, Rongfu Wang1* 1 Resources and Environment College, Anhui Agricultural University, Hefei, China, 2 Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China * [email protected] (NH); [email protected] (RW)

Abstract OPEN ACCESS Citation: Wang Q, Wang D, Wen X, Yu G, He N, Wang R (2015) Differences in SOM Decomposition and Temperature Sensitivity among Soil Aggregate Size Classes in a Temperate Grasslands. PLoS ONE 10(2): e0117033. doi:10.1371/journal.pone.0117033 Academic Editor: Wenju Liang, Chinese Academy of Sciences, CHINA Received: April 28, 2014 Accepted: December 17, 2014 Published: February 18, 2015 Copyright: © 2015 Wang et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Data Availability Statement: All relevant data are within the paper and its Supporting Information files. Funding: Funding for this work partly supported by the Environmental Public Welfare Scientific Research Project (201209028), the Natural Science Foundation of China (31270519), and the Program for “Kezhen” Distinguished Talents in Institute of Geographic Sciences and Natural Resources Research, CAS. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.

The principle of enzyme kinetics suggests that the temperature sensitivity (Q10) of soil organic matter (SOM) decomposition is inversely related to organic carbon (C) quality, i.e., the C quality-temperature (CQT) hypothesis. We tested this hypothesis by performing laboratory incubation experiments with bulk soil, macroaggregates (MA, 250–2000 μm), microaggregates (MI, 53–250 μm), and mineral fractions (MF, bulk soil >MI(P

Differences in SOM decomposition and temperature sensitivity among soil aggregate size classes in a temperate grasslands.

The principle of enzyme kinetics suggests that the temperature sensitivity (Q10) of soil organic matter (SOM) decomposition is inversely related to or...
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