Impact of agricultural management practices on soil organic carbon: simulation of Australian wheat systems
文献类型：期刊论文
| 作者 | Zhao, Gang(赵刚) ; Bryan, BA ; King, D ; Luo, ZK ; Wang, EL ; Song, XD ; Yu, Q |
| 刊名 | GLOBAL CHANGE BIOLOGY
 |
| 出版日期 | 2013 |
| 卷号 | 19期号:5页码:1585-1597 |
| 关键词 | agricultural management practice APSIM Australia carbon sequestration climate change crop model soil organic carbon wheat |
| 通讯作者 | Zhao, Gang(赵刚) |
| 英文摘要 | Quantifying soil organic carbon (SOC) dynamics at a high spatial and temporal resolution in response to different agricultural management practices and environmental conditions can help identify practices that both sequester carbon in the soil and sustain agricultural productivity. Using an agricultural systems model (the Agricultural Production Systems sIMulator), we conducted a high spatial resolution and long-term (122years) simulation study to identify the key management practices and environmental variables influencing SOC dynamics in a continuous wheat cropping system in Australia's 96million ha cereal-growing regions. Agricultural practices included five nitrogen application rates (0200kgNha1 in 50kgNha1 increments), five residue removal rates (0100% in 25% increments), and five residue incorporation rates (0100% in 25% increments). We found that the change in SOC during the 122-year simulation was influenced by the management practices of residue removal (linearly negative) and fertilization (nonlinearly positive) and the environmental variables of initial SOC content (linearly negative) and temperature (nonlinearly negative). The effects of fertilization were strongest at rates up to 50kgNha1, and the effects of temperature were strongest where mean annual temperatures exceeded 19 degrees C. Reducing residue removal and increasing fertilization increased SOC in most areas except Queensland where high rates of SOC decomposition caused by high temperature and soil moisture negated these benefits. Management practices were particularly effective in increasing SOC in south-west Western Australia an area with low initial SOC. The results can help target agricultural management practices for increasing SOC in the context of local environmental conditions, enabling farmers to contribute to climate change mitigation and sustaining agricultural production. |
| 收录类别 | SCI |
| 资助信息 | National Basic Research Program of China 2012CB955304;National Science Foundation of China 31270588;CSIRO Integrated Carbon Pathways (ICP) initiative;CSIRO's Sustainable Agriculture Flagship;Chinese Scholarship Council |
| 公开日期 | 2013-05-13 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/27874]  |
| 专题 | 地理科学与资源研究所_研究生部 |
| 推荐引用方式 GB/T 7714 | Zhao, Gang,Bryan, BA,King, D,et al. Impact of agricultural management practices on soil organic carbon: simulation of Australian wheat systems[J]. GLOBAL CHANGE BIOLOGY,2013,19(5):1585-1597. |
| APA | Zhao, Gang.,Bryan, BA.,King, D.,Luo, ZK.,Wang, EL.,...&Yu, Q.(2013).Impact of agricultural management practices on soil organic carbon: simulation of Australian wheat systems.GLOBAL CHANGE BIOLOGY,19(5),1585-1597. |
| MLA | Zhao, Gang,et al."Impact of agricultural management practices on soil organic carbon: simulation of Australian wheat systems".GLOBAL CHANGE BIOLOGY 19.5(2013):1585-1597. |
入库方式： OAI收割
来源：地理科学与资源研究所
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