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Post-harvest slash burning in coniferous forests in North America: A review of ecological impacts
Forest Ecology and Management ( IF 3.7 ) Pub Date : 2021-04-30 , DOI: 10.1016/j.foreco.2021.119251
Christine M. Mott , Richard W. Hofstetter , Anita J. Antoninka

Increasing drought and changing temperatures drive researchers to seek more efficient and effective means to aid management of coniferous forests across the western United States. Thinning allows for effective removal of biomass, but with few options to remove the residual slash from the treatment unit after saleable timber is taken away, pile burning has become a favored method of debris removal. Pile burning has greater efficiency and reduced removal cost as compared to air curtain burning or whole tree removal. In this review, we synthesize the current knowledge on the effects of slash pile burning on soil physical properties, soil nutrients, impacts to understory vegetation and tree regeneration, animal responses to pile burning, and the variety of remediation techniques for burn scar areas. Forest composition and age, climate, and fire intensity have the greatest impact on the outcomes of pile burning. Pre-fire ecosystem dynamics influence the changes to soil structure and nutrient profile, where native vegetation can either capitalize on changes such as altered nitrogen pathways, or be outcompeted by nonnative species. We hypothesize that vegetation adaptations to the natural fire interval may play a role in recovery from these high-intensity burn piles, and with further research, could assist managers in improved remediation efforts. We identify existing gaps in our knowledge of the ecosystem effects of slash pile burning, and to suggest some management-centered areas for further research.



中文翻译:

北美针叶林收获后的砍伐焚烧:生态影响综述

越来越多的干旱和不断变化的温度促使研究人员寻求更有效的手段来帮助美国西部针叶林的管理。细化处理可以有效去除生物量,但是在去除可出售木材后,几乎没有其他方法可以去除处理单元中的残留斜线,堆烧已成为一种首选的清除碎屑的方法。与气幕燃烧或整棵树清除相比,堆烧具有更高的效率并降低了清除成本。在这篇综述中,我们综合了关于刀耕火种对土壤物理特性,土壤养分,对林下植被和树木再生的影响,对桩火的动物反应以及对疤痕烧伤的各种修复技术的影响的现有知识。森林组成和年龄,气候,火灾强度对堆烧的结果影响最大。火灾前的生态系统动态会影响土壤结构和养分分布的变化,而原生植被既可以利用氮通道变化等变化来利用,也可以被非本地物种所竞争。我们假设植被适应自然火灾间隔可能在这些高强度燃烧堆的恢复中发挥作用,并且通过进一步的研究,可以帮助管理人员改善补救措施。我们在对刀耕火种的生态系统影响的认识中确定了现有的差距,并提出了一些以管理为中心的领域,以供进一步研究。那里的本地植被可以利用诸如氮途径变化之类的变化,或者被非本地物种所竞争。我们假设植被适应自然火灾间隔可能在这些高强度燃烧堆的恢复中发挥作用,并且通过进一步的研究,可以帮助管理人员改善补救措施。我们在对刀耕火种的生态系统影响的认识中确定了现有的差距,并提出了一些以管理为中心的领域,以供进一步研究。那里的本地植被可以利用诸如氮途径变化之类的变化,或者被非本地物种所竞争。我们假设植被适应自然火灾间隔可能在这些高强度燃烧堆的恢复中发挥作用,并且通过进一步的研究,可以帮助管理人员改善补救措施。我们在对刀耕火种的生态系统影响的认识中确定了现有的差距,并提出了一些以管理为中心的领域,以供进一步研究。

更新日期:2021-04-30
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