Potential and sustainability for carbon sequestration with improved soil management in agricultural soils of China
文献类型：SCI/SSCI论文
| 作者 | Tao B. |
| 发表日期 | 2007 |
| 关键词 | carbon sequestration soil management process model remote sensing net primary production light-use efficiency land-use change organic-carbon climate-change european soils co2 mitigation united-states tillage emissions |
| 英文摘要 | Arable land soils generally have lower organic carbon (C) levels than soils under native vegetation; increasing the C stocks through improved management is suggested as an effective means to sequester CO(2) from the atmosphere. China's arable lands, accounting for 13% of the world's total, play an important role in soil C sequestration, but their potential to enhance C sequestration has not yet been quantitatively assessed. The C sequestration by agricultural soils is affected by many environmental factors (such as climate and soil conditions), biological processes (crop C fixation, decomposition and transformation), and crop and soil management (e.g. tillage and manure application). Estimation of the C sequestration potential requires the quantification of the combined effects of these factors and processes. In this study, we used a coupled remote sensing- and process-based ecosystem model to estimate the potential for C sequestration in agricultural soils of China and evaluated the sustainability of soil C uptake under different soil management options. The results show that practicing no-tillage on 50% of the arable lands and returning 50% of the crop residue to soils would lead to an annual soil C sequestration of 32.5 Tg C, which accounts for about 4% of China's current annual C emission. Soil C sequestration with improved soil management is highly time-dependent; the effect lasted for only 20-80 years. Generally, practicing no-tillage causes higher rate and longer sustainability of soil C sequestration than only increasing crop residue into soils. The potential for soil C sequestration varied greatly among different regions due to the differences in climate, soil conditions and crop productivity. (c) 2006 Elsevier B. V. All rights reserved. |
| 出处 | Agriculture Ecosystems & Environment |
| 卷 | 121 |
| 期 | 4 |
| 页 | 325-335 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 0167-8809 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/22635]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Tao B.. Potential and sustainability for carbon sequestration with improved soil management in agricultural soils of China. 2007. |
入库方式： OAI收割
来源：地理科学与资源研究所
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