Seasonal Changes in Various Soil Organic Carbon Pools with Different Soil Amendments

Abstract:

In a sustainable agriculture farming systems experiment, the dynamics of soil organic carbon (OC), carbon/nitrogen (C/N) ratio and labile organic carbon pool in soil amended with maize stalk (MS), rice straw (RS) and alfalfa (AF) were studied from August 2005 to August 2006. The results showed that organic material with low N content decomposed slowly, while that with absolutely high N content depressed decomposition rate. After one year’s decomposition, the humification process of organic materials was basically complete. Soil labile carbon content was dramatically improved compared with the control after the addition of organic materials to the soil. The leached DOC was highly correlated with micro-organisms activity and MBC was highly dependent on N incorporation.

• Periodical: Advanced Materials Research (Volume 599)
• Pages: 870-874
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.599.870
• Online since: November 2012
• Authors: Hua Zhou, Wan Tai Yu, Qiang Ma
• Keywords: C/N Ratio, Decomposition Rate, DOC, MBC, Organic C

References

[1] R.C. Dalal and R.J. Mayer: Aust. J. Soil Res. Vol. 24 (1986), p.265

[2] Eynard, T.E. Schumacher, M.J. Lindstrom and D.D. Malo: Soil Till. Res. Vol. 81 (2005), p.253

[3] W.M. Post and K.C. Kwon: Global Change Biol. Vol. 6 (2000), p.317

[4] Mandal, B. Majumder, P.K. Bandyopadhyay, G.C. Hazra, A.Gangopadhyay, R.N. Samantaray, A.K. Misra, J. Chaudhury, M.N. Saha, and S. Kundu: Global Change Biol. Vol. 3 (2008), p.357

[5] Y. He, Z.H. Xu, C.R. Chen, J. Burton , Q. Ma, Y. Ge and J.M. Xu: Geoderma Vol.147 (2008), p.116

[6] H.J. Dawson, F.C. Ugolini, B.F. Hrutfiard and J. Zachara: Soil Sci. Vol. 126 (1978), p.290

[7] D.S. Powlson, P.C. Brookes and B.T. Christensen: Soil Biol. Biochem. Vol. 19 (1987), p.159

[8] W.T. Yu, Z. S. Jiang, H. Zhou and Q. Ma: Nutr. Cycl. Agroecosyst. Vol. 84 (2009), p.203

[9] K. Kalbitz, S. Solinger, J.M. Park, B. Michalzik and E. Matzner, Soil Sci. Vol.165 (2000), p.277

[10] E.D. Vance, P.C. Brookes, D.S. Jenkinson: Soil Biol. Biochem. Vol. 19 (1987), p.703

[11] H. Zhou, W.T. Yu, Q. Ma and L. Zhang: Chinese Journal of Soil Science. Vol. 40 (2009), p.154 (in Chinese)

[12] W.J. Wang, J.A. Baldock, R.C. Dalal and P.W. Moody: Soil Biol. Biochem. Vol. 36 (2004), p. (2045)

[13] K. Kumar and K.M. Goh: Adv. Agron. Vol. 68 (2000), p.197

[14] J.Z. Ni, J.M. Xu, Z.M. Xie and C.X. Tang: Plant Nutrition and Fertilizer Science, Vol.7 (2001), p.374 (in Chinese)