Abstract
Purpose
Soil organic carbon (SOC) sequestration in croplands plays a critical role in climate change mitigation and food security, whereas the stability and saturation of the sequestered SOC have not been well understood yet, particularly in rice (Oryza sativa L.) fields. The objective of this study was to determine the long-term effect of inorganic fertilization alone or combined with organic amendments on SOC stability in a double rice cropping system, and to characterize the saturation behavior of the total SOC and its fractions in the paddy soil.
Materials and methods
Soils were collected from a long-term field experiment in subtropical China where different fertilization regimes have been carried out for 31 years. The total SOC pool was separated into four fractions, characteristic of different turnover rates through chemical fractionation. Annual organic carbon (C) inputs were also estimated by determining the C content in crop residues and organic amendments.
Results and discussion
Relative to the initial level, long-term double rice cropping without any fertilizer application significantly increased SOC concentration, suggesting that double rice cropping facilitates the storage and accumulation of SOC. The partial substitution of inorganic fertilizers with organic amendments significantly increased total SOC concentration compared to the unfertilized control. Total SOC increased significantly with greater C inputs and did not show any saturation behavior. Increased SOC was primarily stored in the labile fraction with input from organic amendments. However, other less labile SOC fractions showed no further increase with greater C inputs exhibiting C saturation.
Conclusions
While the paddy soil holds a high potential for SOC sequestration, stable C fractions saturate with increasing C inputs, and thus, additional C inputs mainly accumulate in labile soil C pools.
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References
Carrington EM, Hernes PJ, Dyda RY, Plante AF, Six J (2012) Biochemical changes across a carbon saturation gradient: lignin, cutin, and suberin decomposition and stabilization in fractionated carbon pools. Soil Biol Biochem 47:179–190
Castellano MJ, Kaye JP, Lin H, Schmidt JP (2012) Linking carbon saturation concepts to nitrogen saturation and retention. Ecosystems 15:175–187
Chan KY, Bowman A, Oates A (2001) Oxidizable organic carbon fractions and soil quality changes in an oxic paleustaff under different pastures leys. Soil Sci 166:61–67
Chen X, Guo J, Liu M et al (2011) Effects of fertilization on lability and recalcitrancy of organic carbon of red paddy soils. Acta Pedol Sin 29:168–174 (in Chinese)
Chung H, Grove JH, Six J (2008) Indications for soil carbon saturation in a temperate agroecosystem. Soil Sci Soc Am J 72:1132–1139
Chung H, Ngo KJ, Plante A, Six J (2010) Evidence for carbon saturation in a highly structured and organic-matter-rich soil. Soil Sci Soc Am J 74:130–138
Dungait JAJ, Hopkins DW, Gregory AS, Whitmore AP (2012) Soil organic matter turnover is governed by accessibility not recalcitrance. Glob Change Biol 18:1781–1796
FAOSTAT (2013) Database available online. http://faostat.fao.org/default.aspx?lang=en. Accessed 26 May 2013
Fornara DA, Tilman D (2008) Plant functional composition influences rates of soil carbon and nitrogen accumulation. J Ecol 96:314–322
Gulde S, Chung H, Amelung W, Chang C, Six J (2008) Soil carbon saturation controls labile and stable carbon pool dynamics. Soil Sci Soc Am J 72:605–612
Halvorson AD, Wienhold BJ, Black AL (2002) Tillage, nitrogen, and cropping system effects on soil carbon sequestration. Soil Sci Soc Am J 66:906–912
Huang S, Rui W, Peng X, Huang Q, Zhang W (2010) Organic carbon fractions affected by long-term fertilization in a subtropical paddy soil. Nutr Cycl Agroecosys 86:153–160
Huang S, Sun Y, Zhang W (2012) Changes in soil organic carbon stocks as affected by cropping systems and cropping duration in China’s paddy fields: a meta-analysis. Clim Chang 112:847–858
Jagadamma S, Lal R (2010) Integrating physical and chemical methods for isolating stable soil organic carbon. Geoderma 158:322–330
Jastrow JD, Amonette JE, Bailey VL (2007) Mechanisms controlling soil carbon turnover and their potential application for enhancing carbon sequestration. Clim Chang 80:5–23
Kögel-Knabner I, Amelung W, Cao Z et al (2010) Biogeochemistry of paddy soils. Geoderma 157:1–14
Lal R (2004) Soil carbon sequestration impacts on global climate change and food security. Science 304:1623–1627
Lal R (2010) Managing soils and ecosystems for mitigating anthropogenic carbon emissions and advancing global food security. BioScience 60:708–721
Liu M, Hu F, Chen X et al (2009) Organic amendments with reduced chemical fertilizer promote soil microbial development and nutrient availability in a subtropical paddy field: the influence of quantity, type and application time of organic amendments. Appl Soil Ecol 42:166–175
Mandal B, Majumder B, Adhya TK et al (2008) Potential of double-cropped rice ecology to conserve organic carbon under subtropical climate. Glob Change Biol 14:2139–2151
Minasny B, McBratney AB, Hong SY et al (2012) Continuous rice cropping has been sequestering carbon in soils in Java and South Korea for the past 30 years. Glob Biogeochem Cycles 26, GB3027. doi:10.1029/2012GB004406
Moore TR, Trofymow JA, Siltanen M, Kozak LM (2008) Litter decomposition and nitrogen and phosphorus dynamics in peatlands and uplands over 12 years in central Canada. Oecologia 157:317–325
Olk DC, Cassman KG, Schmidt-Rohr K, Anders MM, Mao JD, Deenik JL (2006) Chemical stabilization of soil organic nitrogen by phenolic lignin residues in anaerobic agroecosystems. Soil Biol Biochem 38:3303–3312
Pan G, Li L, Wu L, Zhang X (2003) Storage and sequestration potential of topsoil organic carbon in China’s paddy soils. Glob Change Biol 10:79–92
Powlson DS, Whitmore AP, Goulding KWT (2011) Soil carbon sequestration to mitigate climate change: a critical re-examination to identify the true and the false. Eur J Soil Sci 62:42–55
Schmidt MWI, Torn MS, Abiven S et al (2011) Persistence of soil organic matter as an ecosystem property. Nature 478:49–56
Schulz E, Breulmann M, Boettger T, Wang KR, Neue HU (2011) Effect of organic matter input on functional pools of soil organic carbon in a long-term double rice crop experiment in China. Eur J Soil Sci 62:134–143
Six J, Conant RT, Paul EA, Paustian K (2002) Stabilization mechanisms of soil organic matter: implications for C-saturation of soils. Plant Soil 241:155–176
Smith P (2008) Land use change and soil organic carbon dynamics. Nutr Cycl Agroecosyst 81:169–178
Song X, Li L, Zheng J et al (2012) Sequestration of maize crop straw C in different soils: role of oxyhydrates in chemical binding and stabilization as recalcitrance. Chemosphere 87:649–654
Stewart CE, Paustian K, Conant RT, Plante AF, Six J (2007) Soil carbon saturation: concept, evidence and evaluation. Biogeochemistry 86:19–31
Stewart CE, Plante AF, Paustian K, Conant RT, Six J (2008) Soil carbon saturation: linking concept and measurable carbon pools. Soil Sci Soc Am J 72:379–392
Stewart CE, Follett RF, Wallace J, Pruessner EG (2012) Biosolid and tillage effects on physically isolated fractions: implications for conservation management of three Virginia coastal plain soil series. Soil Sci Soc Am J 76:1257–1267
Sun W, Huang Y, Zhang W, Yu Y (2010) Carbon sequestration and its potential in agricultural soils of China. Glob Biogeochem Cycles 24, GB3001. doi:10.1029/2009GB003484
Tong C, Xiao H, Tang G et al (2009) Long-term fertilizer effects on organic carbon and total nitrogen and coupling relationships of C and N in paddy soils in subtropical China. Soil Tillage Res 106:8–14
van Wesemael B, Paustian K, Meersmans J, Goidts E, Barancikova G, Easter M (2010) Agricultural management explains historic changes in regional soil carbon stocks. Proc Natl Acad Sci 107:14926–14930
Virto I, Barré P, Burlot A, Chenu C (2012) Carbon input differences as the main factor explaining the variability in soil organic C storage in no-tilled compared to inversion tilled agrosystems. Biogeochemistry 108:17–26
Walkley A, Black IA (1934) An examination of the Degtjareff method for determining soil organic matter and a proposed modification of the chromic acid titration method. Soil Sci 37:29–38
West TO, Six J (2007) Considering the influence of sequestration duration and carbon saturation on estimates of soil carbon capacity. Clim Chang 80:25–41
Yan X, Cai Z, Wang S, Smith P (2011) Direct measurement of soil organic carbon content change in the croplands of China. Glob Change Biol 17:1487–1496
Yu H, Ding W, Luo J, Geng R, Ghani A, Cai Z (2012) Effects of long-term compost and fertilizer application on stability of aggregate-associated organic carbon in an intensively cultivated sandy loam soil. Biol Fertil Soils 48:325–336
Yu Y, Guo Z, Wu H, Kahmann JA, Oldfield F (2009) Spatial changes in soil organic carbon density and storage of cultivated soils in China from 1980 to 2000. Glob Biogeochem Cycles 23, GB2021. doi:10.1029/2008GB003428
Zhang W, Xu M, Wang X et al (2012) Effects of organic amendments on soil carbon sequestration in paddy fields of subtropical China. J Soils Sediments 12:457–470
Acknowledgments
This work was supported by the National Key Technology Support Program of China (2011BAD16B14, 2012BAD14B14), the Foundation of Jiangxi Province (GJJ12245, QN201102), the innovation program of Chinese Academy of Agricultural Sciences and New Century Excellent Talents Program, China (NCET-05-0492).
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Sun, Y., Huang, S., Yu, X. et al. Stability and saturation of soil organic carbon in rice fields: evidence from a long-term fertilization experiment in subtropical China. J Soils Sediments 13, 1327–1334 (2013). https://doi.org/10.1007/s11368-013-0741-z
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DOI: https://doi.org/10.1007/s11368-013-0741-z