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巴西大西洋森林中土地覆盖类型的相对易燃性

Bruno F C B Adorno¹, Augusto J Piratelli², Erica Hasui³

¹Centro de Ciências Biológicas e da Saúde, Universidade Federal de São Carlos, Sorocaba, SP, Brazil; CE3C-Centre for Ecology, Evolution and Environmental Changes & CHANGE, Global Change and Sustainability Institute, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, C2, Piso 5, 1749-016, Lisboa, Portugal.

Journal of environmental management

|January 13, 2025

概括

热带森林面临着越来越多的火灾风险. 二级森林比预期更容易燃烧,而老生长森林不那么容易燃烧. 定制的消防管理对于保护这些重要生态系统至关重要.

科学领域:

生态生态学生态生态学
环境科学环境科学
林业林业林业林业林业

背景情况:

包括巴西大西洋森林 (AF) 在内的热带生物群体,由于人类活动和气候变化,火灾发生率增加.
了解景观与火灾的相互作用对于这些受火灾影响地区的有效保护和管理至关重要.
不同的土地利用和土地覆盖 (LULC) 类型的易燃性在热带生态系统中仍未得到充分研究.

研究的目的:

调查巴西大西洋森林 (AF) 中各种LULC类型的易燃性.
在35年的时间内分析火-LULC相互作用,以了解时间动态.
为开发适合热带森林火灾管理策略提供见解.

主要方法:

使用基于选择比率的方法来分析火灾-LULC相互作用.
分析了从1987年到2022年跨越不同AF生态区域的40869起火灾的数据.
通过比较每个LULC类型的燃烧面积比例与其可用性来量化易燃性.

主要成果:

二级森林的火灾易发率明显高 (比预期的多燃烧了61%),而老生长森林的火灾易发率较低 (比预期的少燃烧了57%).
在AF的牧场显示火灾易发性低于预期,与巴西土地用途的一般假设相反.
随着时间的推移,二级森林的火灾易感性下降,可能是由于森林成熟和土地管理的改变.

结论:

由于二级森林的高度脆弱性,二级森林需要特定的火灾管理策略,特别是在恢复计划中.
"智能消防管理"实践和社区参与对于减轻野火风险至关重要.
这项研究为了解热带火灾景观动态提供了一个框架,并告知了保护工作对越来越多的野火威胁.

关键词:

大西洋森林的大西洋森林.消防管理消防管理易燃性易燃性的土地覆盖面土地覆盖面旧生长的森林旧生长的森林二级森林二级森林是二级森林中的一个.野火大火在野火大火

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