Temporal changes in soil organic carbon concentration and stocks in reclaimed minesoils of southeastern Ohio
- New Mexico State University, Las Cruces, NM (United States)
This project assessed the soil organic C (SOC) sequestration potential of reclaimed minesoils (RMS) which are characterized by distinct age chronosequences of RMS and located in Guernsey, Morgan, Noble, and Muskingum Counties of Ohio. Three cores and three bulk soil samples were collected from each site and one unmined site (UMS) from 0 to 15 cm and 15 to 30 cm depths during 2003. Soil bulk density was the highest for the site reclaimed in 2003 (R03) for both depths. It did not vary among sites reclaimed in 1987 (R87), 1978 (R78) and UMS for either depth. For sites reclaimed without topsoil application, soil bulk density was higher in site reclaimed in 1957 under grass than reclaimed during the same year but under forest for 15 to 30 cm depth only. Soil organic C and total N stocks were lower in R03 than R78 and UMS for 0 to 15 cm depth. Soil organic C and total N stocks were also lower in R03 than R87 and R78 for 15 to 30 cm depth. Coal C concentrations ranged from 0.5% (R03) to 68.4% (R69) of total soil C in 0 to 15 cm and 0.8% (R03) to 77.0% (R69) in 15 to 30 cm depth. SOC stocks increased at a rate of 0.53 Mg ha{sup -1} yr{sup -1} for 0 to 15 cm depth and 0.31 Mg ha{sup -1} yr or 15 to 30 cm depth. The rate of increase in SOC stocks for 0 to 15 cm depth was greater in soils reclaimed with topsoil application. These results show that reclamation with topsoil application increases the rate of SOC storage in soil and enhances the rate of soil quality improvement.
- OSTI ID:
- 20701188
- Journal Information:
- Soil Science, Journal Name: Soil Science Journal Issue: 12 Vol. 170; ISSN 0038-075X; ISSN SOSCAK
- Country of Publication:
- United States
- Language:
- English
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Carbon Sequestration in Reclaimed Mined Soils of Ohio
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