Abstract
Paddy soils are considered to have a great soil organic carbon (SOC) sequestration potential. The present study was conducted to estimate the amount of new C derived from rice-roots in a paddy soil under global warming with elevated CO2 concentration ([CO2]) using δ13C technique. Roots of rice grown with elevated [CO2] were significantly depleted in 13C by more than 6% compared to those with ambient [CO2], leading to a low δ13C of SOC via rhizodeposition of 13C-depleted C under elevated [CO2]. The net C storage derived from roots was estimated to be 0.25 and 0.31 kg m-2 under ambient and elevated air temperature (Tair) conditions, respectively. The greater roots-derived C under elevated Tair than that under ambient Tair collaborated with increased root biomass by elevated Tair. However, SOC balance analysis revealed that 0.16 and 0.21 kg m-2 of autochthonous SOCs were decomposed under ambient and elevated Tair, respectively, during the growth season. Therefore, elevated Tair may enhance incorporation of new C derived from roots to SOC pool due to increased belowground biomass, but warming may also increase decomposition of old SOC by stimulating temperature-sensitive microbial activities.
Similar content being viewed by others
References
Balesdent J and Balabane M (1988) Maize root-derived soil organic carbon estimated by natural 13C abundances. Soil Biol Biochem 24, 97–101.
Cardon ZG, Hungate BA, Cambardella CA, Chapin III FS, Field CB, Holland EA, and Mooney HA (2001) Contrasting effects of elevated CO2 on old and new soil carbon pools. Soil Biol Bichem 33, 365–373.
Cheng W (1999) Rhizosphere feedbacks in elevated CO2. Tree Physiol 19, 313–320.
Cheng W and Johnson DW (1998) Elevated CO2, rhizosphere processes, and soil organic matter decomposition. Plant Soil 202, 167–174.
Farquhar GD, Ehleringer JR, and Hubick KT (1989) Carbon isotope discrimination and photosynthesis. Annu Rev Plant Physiol Plant Mol Biol 40, 503–537.
Fontaine S, Bardoux G, Abbadie L, and Mariotti A (2004) Carbon input to soil may decrease soil carbon content. Ecol Lett 7, 314–320.
Heath J, Ayres E, Possell M, Bardgett RD, Black HIJ, Grant H, Ineson P, and Kerstiens G (2005) Rising atmospheric CO2 reduces sequestration of root-derived soil carbon. Science 309, 1711–1713.
Ineson P, Cotrufo MF, Bol R, Harkness DD, and Blum H (1996) Quantification of soil carbon input under elevated CO2: C3 plants in a C4 soil. Plant Soil 187, 345–350.
Ingram JSI and Fernandes ECM (2001) Managing carbon sequestration in soils: Concepts and terminology. Agr Ecosyst Environ 87, 111–117.
Kim HY, Horie T, Nakagawa H, and Wada K (1996) Effects of elevated CO2 concentration and high temperature on growth and yield of rice. Jpn J Crop Sci 65, 634–643.
Kim HY, Lieffering M, Miura S, Kobayashi K, and Okada M (2001) Growth and nitrogen uptake of CO2-enriched rice under field conditions. New Phytol 150, 223–229.
Kim HY, Lim SS, Kwak JH, Lee DS, Lee SM, Ro HM, and Choi WJ (2011) Dry matter and nitrogen accumulation and partitioning in rice (Oryza sativa L.) exposed to experimental warming with elevated CO2. Plant Soil 342, 59–71.
Lal R (2004) Soil carbon sequestration to mitigate climate change. Geoderma 123, 1–22.
Lal R, Follett RF, Stewart BA, and Kimble JM (2007) Soil carbon sequestration to mitigate climate change and advance food security. Soil Sci 172, 943–956.
Li Z and Yagi K (2004) Rice root-derived carbon input and its effect on decomposition of old soil carbon pool under elevated CO2. Soil Biol Biochem 36, 1967–1973.
Li Z, Yagi K, Sakai H, and Kobayashi K (2004) Influence of elevated CO2 and nitrogen nutrition on rice plant growth, soil microbial biomass, dissolved organic carbon and dissolved CH4. Plant Soil 258, 81–90.
Liu QH, Shi XZ, Weindorf DC, Yu DS, Zhao YC, Sun WX, and Wang HJ (2006) Soil organic carbon storage of paddy soils in China using the 1:1,000,000 soil database and their implications for C sequestration. Global Biogeochem Cy 20, GB3024.
Lu Y, Watanabe A, and Kimura M (2002) Contribution o plant-derived carbon to soil microbial biomass dynamics in a paddy rice microcosm. Biol Fertil Soils 36, 136–142.
Lynch JM and Whipps JM (1990) Substrate flow in the rhizosphere. Plant Soil 129, 1–10.
Nitschelm JJ, Lüscher A, Hartwig UA, and van Kessel C (1997) Using stable isotopes to determine soil carbon input differences under ambient and elevated atmospheric CO2 conditions. Global Change Biol 3, 411–416.
Pan G, Li L, Wu L, and Zhang X (2003) Storage and sequestration potential of topsoil organic carbon in China’s paddy soils. Global Change Biol 10, 79–92.
Rapalee G, Trumbore SE, Davidson EA, Harden JW, and Veldhuis H. (1998) Soil carbon stocks and their rates of accumulation and loss in a boreal forest landscape. Global Biogeochem Cy 12, 687–701.
Rui W and Zhang W (2010) Effect size and duration of recommended management practices on carbon sequestration in paddy field in Yangtze Delta Plain of China: A meta-analysis. Agr Ecosyst Environ 135, 199–205.
Sahrawat KL (2004) Organic matter accumulation in submerged soils. Adv Agron 81, 169–201.
Siebke K, Ghannoum O, Conroy JP, and von Caemmerer S (2002) Elevated CO2 increases the leaf temperature of two glasshouse-grown C-4 grasses. Funct Plant Biol 29, 1377–1385.
Søe ARB, Giesemann A, Anderson TH, Weigel HJ, and Buchmann N (2004) Soil respiration under elevated CO2 and its partitioning into recently assimilated and older carbon sources. Plant Soil 262, 85–94.
Takai T, Ohsumi A, San-oh Y, Laza MRC, Kondo M, Yamamoto T, and Yano M (2009) Detection of a quantitative trait locus controlling carbon isotopic discrimination and its contribution to stomatal conducatance in japonica rice. Theor Appl Genet 118, 1401–1410.
Vanhala P, Karhu K, Tuomi M, Sonninen E, Jungner H, Fritze H, and Liski J (2007) Old soil carbon is more temperature sensitive than the young in an agricultural field. Soil Biol Biochem 39, 2967–2970.
Wynn JG (2007) Carbon isotope fractionation during decomposition of organic matter in soils and paleosols: Implications for paleoecological interpretation of paleosols. Palaeogeogr Palaeocl 251, 437–448.
Yuste JC, Ma S, and Baldocchi DD (2010) Plant-soil interactions and acclimation to temperature of microbial-mediated soil respiration may affect predictions of soil CO2 efflux. Biogeochemistry 98, 27–138.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Baek, WJ., Kim, YJ., Yun, SI. et al. Sequestration of roots-derived carbon in paddy soil under elevated CO2 with two temperature regimes as assessed by isotope technique. J. Korean Soc. Appl. Biol. Chem. 54, 403–408 (2011). https://doi.org/10.3839/jksabc.2011.063
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.3839/jksabc.2011.063