Articles | Volume 13, issue 24
Research article
15 Dec 2016
Research article |  | 15 Dec 2016

Microbial activity promoted with organic carbon accumulation in macroaggregates of paddy soils under long-term rice cultivation

Yalong Liu, Ping Wang, Yuanjun Ding, Haifei Lu, Lianqing Li, Kun Cheng, Jufeng Zheng, Timothy Filley, Xuhui Zhang, Jinwei Zheng, and Genxing Pan

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Cited articles

Allison, S. D. and Jastrow, J. D.: Activities of extracellular enzymes in physically isolated fractions of restored grassland soils, Soil Biol. Biochem., 38, 3245–3256, 2006.
Allison, S. D., Wallenstein, M. D., and Bradford, M. A.: Soil-carbon response to warming dependent on microbial physiology, Nat. Geosci., 3, 336–340, 2010.
Balser, T. C., McMahon, K., Bart, D., Bronson, D., Coyle, D., Craig, N., Flores-Mangual, M., Forshay, K., Jones, S., and Kent, A.: Bridging the gap between micro-and macro-scale perspectives on the role of microbial communities in global change ecology, Plant Soil, 289, 59–70, 2006.
Bannert, A., Kleineidam, K., Wissing, L., Mueller-Niggemann, C., Vogelsang, V., Welzl, G., Cao, Z., and Schloter, M.: Changes in diversity and functional gene abundances of microbial communities involved in nitrogen fixation, nitrification, and denitrification in a tidal wetland versus paddy soils cultivated for different time periods, Appl. Environ. Microb., 77, 6109–6116, 2011.
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Carbon stabilization should not confound soil microbial activity, which drives biogeochemical cycling and ecosystem services. Across a rice soil chronosequence from tidal marsh, organic carbon concentrated both in coarse-sand- and clay-sized aggregates and enhancement of labile carbon supports high-microbial activity in macroaggregates. Thus, carbon physically protected in macroaggregates promotes bioactivity in rice soils, coevolved with prolonged rice paddy management over centuries.
Final-revised paper