| 来源类型 | Article
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| 规范类型 | 其他
|
| DOI | 10.1016/j.ecolmodel.2009.01.011
|
| A derivation of the statistical characteristics of forest fires. |
| Lin J; Rinaldi S
|
| 发表日期 | 2009
|
| 出处 | Ecological Modelling 220 (7): 898-903
|
| 出版年 | 2009
|
| 语种 | 英语
|
| 摘要 | The analysis of large data sets concerning fires in various forested areas of the world has pointed out that burned areas can often be described by different power-law distributions for small, medium and large fires and that a scaling law for the time intervals separating successive fires is fulfilled. The attempts of deriving such statistical laws from purely theoretical arguments have not been fully successful so far, most likely because important physical and/or biological factors controlling forest fires were not taken into account. By contrast, the two-layer spatially extended forest model we propose in this paper encapsulates the main characteristics of vegetational growth and fire ignition and propagation, and supports the empirically discovered statistical laws. Since the model is fully deterministic and spatially homogeneous, the emergence of the power and scaling laws does not seem to necessarily require meteorological randomness and geophysical heterogeneity, although these factors certainly amplify the chaoticity of the fires. Moreover, the analysis suggests that the existence of different power-laws for fires of various scale might be due to the two-layer structure of the forest which allows the formation of different kinds of fires, i.e. surface, crown, and mixed fires. |
| 主题 | Evolution and Ecology (EEP)
|
| 关键词 | Forest fires
Model
Power law
Scaling law
Vegetational growth
Wildfire statistics
|
| URL | http://pure.iiasa.ac.at/id/eprint/8881/
|
| 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/129006
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推荐引用方式
GB/T 7714 |
Lin J,Rinaldi S. A derivation of the statistical characteristics of forest fires.. 2009.
|
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