[en] The objectives of this study were to determine the effects of drying and wetting (DW) cycles on
soil organic carbon (SOC) mineralisation and on the priming effect (PE) induced by the addition of
13C-labelled wheat straw to long-term no-tillage (NT) and conventional-tillage (CT) soils. We observed
that the SOC mineralisation rate in rewetted soils was greater than that in soils that were kept at
constant water content. The proportion of CO2 derived from the straw declined dramatically during
the first 10 days. The priming direction was first positive, and then became slightly negative. The PE
was higher under DW cycles than under constant water content. There was no significant effect of
the tillage system on the SOC mineralisation rate or PE. The data indicate that the DW cycles had a
significant effect on the SOC mineralisation rate and on the PE, demonstrating a positive combined
effect between wheat straw and moisture fluctuations. Further research is needed to study the role
of microbial communities and C pools in affecting the SOC mineralisation response to DW cycles.
Disciplines :
Agriculture & agronomy
Author, co-author :
Liu, enke; Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, PR China
Wang, jiqnbo; Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, PR China
Angers, DA
Yan, Changrong; Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, PR China
Qweis, T
He, Wenqing; Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, PR China
Chow, A. T., Tanji, K. K., Gao, S. D. & Dahlgren, R. A. Temperature, water content and wet-dry cycle effects on DOC production and carbon mineralization in agricultural peat soils. Soil Biol. Biochem. 38, 477-488 (2006).
de Oliveira, T. S., de Costa, L. M. & Schaefer, C. E. Water-dispersible clay after wetting and drying cycles in four Brazilian oxisols. Soil Till. Res. 83, 260-269 (2005).
Mikha, M. M., Rice, C. W. & Milliken, G. A. Carbon and nitrogen mineralization as affected by drying and wetting cycles. Soil Biol. Biochem. 37, 339-347 (2005).
Lamparter, A., Bachmann, J., Goebel, M. O. & Woche, S. K. Carbon mineralization in soil: Impact of wetting-drying, aggregation and water repellency. Geoderma 150, 324-333 (2009).
Borken, W., Davidson, E. A., Savage, K., Gaudinski, J. & Trumbore, S. E. Drying and wetting effects on carbon dioxide release from organic horizons. Soil Sci. Soc. Am. J. 67, 1888-1896 (2003).
Wu, J. & Brookes, P. C. The proportional mineralisation of microbial biomass and organic matter caused by air-drying and rewetting of a grassland soil. Soil Biol. Biochem. 37, 507-515 (2005).
Kruse, J. S., Kissel, D. E. & Cabrera, M. L. Effects of drying and rewetting on carbon and nitrogen mineralization in soils and incorporated residues. Nutr. Cycl. Agroecosys. 69, 247-256 (2004).
Magid, J., Kjaergaard, C., Gorissen, A. & Kuikman, P. J. Drying and rewetting of a loamy sand soil did not increase the turnover of native organic matter, but retarded the decomposition of added 14C-labelled plant material. Soil Biol. Biochem. 31, 595-602 (1999).
Bremner, J. M. & Führ, F. in The use of isotopes in soil organic matter studies (ed. Jenkinson, D. S.) 199-207 (Pergamon, 1966).
Guenet, B., Danger, M., Abbadie, L. & Lacroix, G. Priming effect: bridging the gap between terrestrial and aquatic ecology. Ecology 91, 2850-2861 (2010).
Kuzyakov, Y., Friedel, J. K. & Stahr, K. Review of mechanisms and quantification of priming effects. Soil Biol. Biochem. 32, 1485-1498 (2000).
Kuzyakov, Y. Review: Factors affecting rhizosphere priming effects. J. Plant Nutr. Soil Sc. Science 165, 382-396 (2002).
Guenet, B., Leloup, J., Raynaud, X., Bardoux, G. & Abbadie, L. Negative priming effect on mineralization in a soil free of vegetation for 80 years. Eur. J. Soil Sci. 61, 384-391 (2010).
Guenet, B., Juarez, S., Bardoux, G., Abbadie, L. & Chenu, C. Evidence that stable C is as vulnerable to priming effect as is more labile C in soil. Soil Biol. Biochem. 52, 43-48 (2012).
Hamer, U. & Marschner, B. Priming effects in different soil types induced by fructose, alanine, oxalic acid and catechol additions. Soil Biol. Biochem. 37, 445-454 (2005).
Guenet, B., Neill, C., Bardoux, G. & Abbadie, L. Is there a linear relationship between priming effect intensity and the amount of organic matter input? Appl. Soil Ecol. 46, 436-442 (2010).
Zhang, W. D. & Wang, S. L. Effects of NH4+ and NO3- on litter and soil organic carbon decomposition in a Chinese fir plantation forest in South China. Soil Biol. Biochem. 47, 116-122 (2012).
Alvarez, R. A review of nitrogen fertilizer and conservation tillage effects on soil organic carbon storage. Soil Use Manage. 21, 38-52 (2005).
Chivenge, P. P., Murwira, H. K., Giller, K. E., Mapfumo, P. & Six, J. Long-term impact of reduced tillage and residue management on soil carbon stabilization: Implications for conservation agriculture on contrasting soils. Soil Till. Res. 94, 328-337 (2007).
Dimassi, B. et al. Effect of nutrients availability and long-term tillage on priming effect and soil C mineralization. Soil Biol. Biochem. 78, 332-339 (2014).
Yu, D. et al. Regional patterns of soil organic carbon stocks in China. J. Environ. Manage. 85, 680-689 (2007).
Liu, E. K. et al. Long-term effects of no-tillage management practice on soil organic carbon and its fractions in the northern China. Geoderma 213, 379-384 (2014).
Chen, H. et al. Effects of 11 years of conservation tillage on soil organic matter fractions in wheat monoculture in Loess Plateau of China. Soil Till. Res. 106, 85-94 (2009).
He, J. et al. Soil properties and crop yields after 11 years of no tillage farming in wheat-maize cropping system in North China Plain. Soil Till. Res. 113, 48-54 (2011).
FAO/UNESCO. Soil Map of the World. UNESCO, Paris (1998).
Bravo-Garza, M. R., Voroney, P. & Bryan, R. B. Particulate organic matter in water stable aggregates formed after the addition of 14C-labeled maize residues and wetting and drying cycles in vertisols. Soil Biol. Biochem. 42, 953-959 (2010).
Roy, M. D., Chhonkar, P. K., & Patra, A. Mineralization of nitrogen from 15N labeled crop residues at varying temperature and clay content. African Journal of Agricultural Research. 6, 102-106 (2011).
Cosentino, D., Chenu, C. & Le Bissonnais, Y. Aggregate stability and microbial community dynamics under drying-wetting cycles in a silt loam soil. Soil Biol. Biochem. 38, 2053-2062 (2006).
Hafner, S. et al. Effect of grazing on carbon stocks and assimilate partitioning in a Tibetan montane pasture revealed by 13CO2 pulse labeling. Global Change Biol. 18, 528-538 (2012).
Subke, J. A. et al. Feedback interactions between needle litter decomposition and rhizosphere activity. Oecologia 139, 551-559 (2004).
Bader, N. E. & Cheng, W. Rhizosphere priming effect of Populus fremontii obscures the temperature sensitivity of soil organic carbon respiration. Soil Biol. Biochem. 39, 600-606 (2007).
Fontaine, S., Bardoux, G., Abbadie, L. & Mariotti, A. Carbon input to soil may decrease soil carbon content. Ecol. Lett. 7, 314-320 (2004).
Fierer, N. & Schimel, J. P. Effects of drying-rewetting frequency on soil carbon and nitrogen transformations. Soil Biol. Biochem. 34, 777-787 (2002).
Xiang, S. R., Doyle, A., Holden, P. A. & Schimel, J. P. Drying and rewetting effects on C and N mineralization and microbial activity in surface and subsurface California grassland soils. Soil Biol. Biochem. 40, 2281-2289 (2008).
Lopez-Sangil, L., Rovira, P. & Casals, P. Decay and vertical reallocation of organic C, and its incorporation into carbonates, in agricultural soil horizons at two different depths and rewetting frequencies. Soil Biol. Biochem. 61, 33-44 (2013).
Zhang, B., Yao, S. H. & Hu, F. Microbial biomass dynamics and soil wettability as affected by the intensity and frequency of wetting and drying during straw decomposition. Eur. J. Soil Sci. 58, 1482-1492 (2007).
Mamilov, A. S. & Dilly, O. A. Soil microbial eco-physiology as affected by short-term variations in environmental conditions. Soil Biol. Biochem. 34, 1283-1290 (2002).
Blagodatskaya, E. & Kuzyakov, Y. 2008. Mechanisms of real and apparent priming effects and their dependence on soil microbial biomass and community structure: critical review. Biol. Fert. Soils 45, 115-131 (2008).
Fontaine, S. et al. Mechanisms of the priming effect in a Savannah soil amended with cellulose. Soil Sci. Soc. Am. J. 68, 125-131 (2004).
Fontaine, S., Mariotti, A. & Abbadie, L. The priming effect of organic matter: a question of microbial competition? Soil Biol. Biochem. 35, 837-843 (2003).
Paulis, J. Measurable soil organic carbon fractions for modeling soil carbon sequestration. M.S. thesis. Univ. of Guelph, Guelph, ON, Canada (2007).
Sharifi, M., Zebarth, B. J., Burton, D. L., Drury, C. F. & Grant, C. A. Mineralization of carbon-14-labeled plant residues in conventional tillage and no-till systems. Soil Sci. Soc. Am. J. 77, 123-132 (2012).
