Tools
Tools
Tu, Chenglong, Liu, Congqiang, Quine, Timothy A., Jones, Matthew William 
ORCID: https://orcid.org/0000-0003-3480-7980, Liu, Taoze, Li, Longbo and Liu, Wenjing
(2018)
Dynamics of soil organic carbon following land-use change: insights from stable C-isotope analysis in black soil of Northeast China.
Acta Geochimica, 37 (5).
pp. 746-757.
ISSN 2365-7499
Preview |
PDF (accepted_version)
- Accepted Version
Download (941kB) | Preview |
Abstract
Intensive soil tillage is a significant factor in soil organic matter decline in cultivated soils. Both cultivation abandonment and foregoing tillage have been encouraged in the past 30 years to reduce greenhouse gas emissions and soil erosion. However, the dynamic processes of soil organic carbon (SOC) in areas of either continuous cultivation or abandonment remain unclear and inconsistent. Our aims were to assess and model the dynamic processes of SOC under continuous tillage and after cultivation abandonment in the black soil of Northeast China. Soil profiles were collected of cultivated or abandoned land with cultivation history of 0–100 years. An isotope mass balance equation was used to calculate the proportion of SOC derived from corn debris (C4) and from natural vegetation (C3) to deduce the dynamic process. Approximately 40% of SOC in the natural surface soil (0–10 cm) was eroded in the first 5 years of cultivation, increasing to about 75% within 40 years, before a slow recovery. C4 above 30 cm soil depth increased by 4.5%–5% or 0.11–0.12 g·kg−1 on average per year under continuous cultivation, while it decreased by approximately 0.34% annually in the surface soil after cultivation abandonment. The increase in the percentage of C4 was fitted to a linear equation with given intercepts in the upper 30 cm of soil in cultivated land. A significant relationship between the change of C4 and time was found only in the surface soil after abandonment of cultivation. These results demonstrate the loss and accumulation of corn-derived SOC in surface black soil of Northeast China under continuous tillage or cultivation abandonment.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | sdg 15 - life on land ,/dk/atira/pure/sustainabledevelopmentgoals/life_on_land |
| Faculty \ School: | Faculty of Science > School of Environmental Sciences |
| UEA Research Groups: | University of East Anglia Schools > Faculty of Science > Tyndall Centre for Climate Change Research Faculty of Science > Research Centres > Tyndall Centre for Climate Change Research Faculty of Science > Research Groups > Climatic Research Unit |
| Related URLs: | |
| Depositing User: | LivePure Connector |
| Date Deposited: | 15 Jul 2019 15:30 |
| Last Modified: | 18 Nov 2023 01:31 |
| URI: | https://ueaeprints.uea.ac.uk/id/eprint/71754 |
| DOI: | 10.1007/s11631-018-0282-7 |
Downloads
Downloads per month over past year
Actions (login required)
 |
View Item |