Present address: Kan-nondai 1-3-11, Tsukuba, Ibaraki 305-0856, Japan.
Use of the RothC model to estimate the carbon sequestration potential of organic matter application in Japanese arable soils
Article first published online: 1 MAR 2010
© 2010 Japanese Society of Soil Science and Plant Nutrition
Soil Science & Plant Nutrition
Volume 56, Issue 1, pages 168–176, February 2010
How to Cite
YOKOZAWA, M., SHIRATO, Y., SAKAMOTO, T., YONEMURA, S., NAKAI, M. and OHKURA, T. (2010), Use of the RothC model to estimate the carbon sequestration potential of organic matter application in Japanese arable soils. Soil Science & Plant Nutrition, 56: 168–176. doi: 10.1111/j.1747-0765.2009.00422.x
- Issue published online: 1 MAR 2010
- Article first published online: 1 MAR 2010
- Received 22 June 2009. Accepted for publication 31 August 2009.
- agricultural soil;
- Rothamsted carbon model;
- soil carbon
We estimated the carbon (C) sequestration potential of organic matter application in Japanese arable soils at a country scale by applying the Rothamsted carbon (RothC) model at a 1-km resolution. After establishing the baseline soil organic carbon (SOC) content for 1990, a 25-year simulation was run for four management scenarios: A (minimum organic matter application), B (farmyard manure application), C (double cropping for paddy fields) and D (both B and C). The total SOC decreased during the simulation in all four scenarios because the C input in all four scenarios was lower than that required to maintain the baseline 1990 SOC level. Scenario A resulted in the greatest depletion, reflecting the effects of increased organic matter application in the other scenarios. The 25-year difference in SOC accumulation between scenario A and scenarios B, C and D was 32.3, 11.1 and 43.4 Mt C, respectively. The annual SOC accumulation per unit area was similar to a previous estimate, and the 25-year averages were 0.30, 0.10 and 0.41 t C ha−1 year−1 for scenarios B, C and D, respectively. The system we developed in the present study, that is, linking the RothC model and soil spatial data, can be useful for estimating the potential C sequestration resulting from an increase in organic matter input to Japanese arable soils, although more feasible scenarios need to be developed to enable more realistic estimation.