The Dynamic Temperate and Boreal Fire and Forest-Ecosystem Simulator (DYNAFFOREST): Development and evaluation

The Dynamic Temperate and Boreal Fire and Forest-Ecosystem Simulator (DYNAFFOREST): Development and evaluation
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动态温带、北方火灾和森林生态系统模拟器 (DYNAFFOREST):开发和评估

DOI:
10.1016/j.envsoft.2022.105473
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发表时间:
2022
影响因子:
4.9
通讯作者:
Williams, A. Park
Williams, A. Park
中科院分区:
环境科学与生态学2区
文献类型:
--
作者:
Hansen, Winslow D.;Krawchuk, Meg A.;Trugman, Anna T.;Williams, A. Park

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在温带和北方生物群中,火是主要的干扰因素,随着气候变化,燃烧面积的增加可能会从根本上改变森林。改进关于火灾引起的森林变化可能如何影响区域范围内随后的燃烧的信息,可为森林管理和气候缓解战略提供信息。然而,火灾在地球系统模型中被简化地表示,区域统计火灾模型往往假设燃料充足,这增加了未来预测的不确定性。为了应对这一挑战,我们开发了温带和北方动态火灾和森林生态系统模拟器(DYNAFFOREST)。DYNAFFOREST代表了森林的等级结构,从单个群体到大陆范围,使得在几十年到几个世纪的大范围内模拟火灾和森林之间的反馈成为可能。我们对美国西部的DYNAFFOREST进行了参数化,并以观测为基准进行了模拟。DYNAFFOREST重建了森林覆盖、结构和下降的燃料的模式,并能够捕捉到20世纪的平均火灾活动。
Fire is a dominant disturbance in temperate and boreal biomes, and increasing burned area with climate change may fundamentally alter forests. Improved information about how fire-induced changes to forests may feedback to affect subsequent burning at regional scales could inform forest management and climate-mitigation strategies. However, fire is simplistically represented in Earth System Models, and regional statistical fire models often assume sufficient fuels, contributing to uncertainty in future projections. To address this challenge, we developed the Dynamic Temperate and Boreal Fire and Forest-Ecosystem Simulator (DYNAFFOREST). DYNAFFOREST represents the hierarchical structuring of forests, from individual cohorts to continental extents, making it possible to simulate feedbacks between fire and forests at broad scales over decades to centuries. We parameterized DYNAFFOREST for the western United States of America and benchmarked simulations with observations. DYNAFFOREST recreated patterns of forest cover, structure, and downed fuels, and was capable of capturing average 20th-century fire activity.
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