| 来源类型 | Article
|
| 规范类型 | 其他
|
| DOI | 10.1016/j.agee.2006.07.020
|
| Soil organic carbon changes in dynamic land use decision models. |
| Schneider UA
|
| 发表日期 | 2007
|
| 出处 | Agriculture, Ecosystems & Environment 119 (3-4): 359-367
|
| 出版年 | 2007
|
| 语种 | 英语
|
| 摘要 | Soil organic carbon can be sequestered through various land management options depending on the soil organic carbon status at the beginning of a management period. This initial soil organic carbon status results from a certain soil management history in a certain soil climate regime. Similarly, the prediction of future carbon storage depends on the time path of future soil management. Unfortunately, the number of possible management trajectories reaches non-computable levels so fast that explicit representations of future management trajectories are infeasible for most existing empirical land use decision models. Not surprisingly, the impact of different management trajectories has been ignored. This article proposes a computationally feasible mathematical programming method for integration of soil state dependent sequestration rates in dynamic land use decision optimization models. The possible soil organic carbon range is divided in several adjacent carbon states. For each soil management practice, location, and initial soil organic carbon state, transition probabilities of moving into a different or remaining in the same state are computed. Subsequently, these probabilities are used in dynamic equations to update the soil organic carbon level before and after each period. To illustrate the impacts of this Markov chain based method, a case study portraying Australian wheat farmers is conducted. |
| 主题 | Forestry (FOR)
|
| 关键词 | Agriculture
Land use
Markov chain
Mathematical programming
Optimization
Sink dynamics
Soil organic carbon sequestration
|
| URL | http://pure.iiasa.ac.at/id/eprint/13448/
|
| 来源智库 | International Institute for Applied Systems Analysis (Austria)
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| 引用统计 |
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| 资源类型 | 智库出版物
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| 条目标识符 | http://119.78.100.153/handle/2XGU8XDN/128629
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推荐引用方式
GB/T 7714 |
Schneider UA. Soil organic carbon changes in dynamic land use decision models.. 2007.
|
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