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Postfire evaluation of fuelwood loss and restoration priority in a mixed, community-managed conifer forest of central New Mexico, United States
Applied Geography ( IF 4.732 ) Pub Date : 2020-04-01 , DOI: 10.1016/j.apgeog.2020.102182
Emanuel Arnal Storey

Abstract The causes and consequences of severe fires must be understood to strategically manage forest resources, including timber and fuelwood. Floods and resulting infrastructure damages are intensified due to soil erosion and debris exhumed by recently-burned catchments. A mixed Ponderosa and Pinon-Juniper forest managed by a rural New Mexico community burned in 2016, destroying harvestable fuelwood and damaging access roads. The objectives of this study were to: (1) estimate lost fuelwood value; (2) identify burned catchments that contributed to road damages; (3) develop criteria to prioritize a restoration area; and 4) recommend possible forest management actions based on assessment of fire regime, natural resource usage, ecological dynamics, and feasibility. Field reconnaissance facilitated image-based mapping of forest structure, burn severity, and early-successional recovery by 2018. High spatial resolution aerial images collected before fire were used to map tree density, as well as height based on shadow lengths and sun angle, and to infer stem volumes from empirical diameter-height relationships. Results suggest that 1.5–2.5 million USD of fuelwood was lost from a 1053-ha area. A remediation priority area (112 ha) was identified within a severely-burned, erosive catchment with limited successional plant cover. Econometrics and landscape-scale optimizations for restoration are proposed. Potential fire management strategies are outlined in order to maximize ecosystem products and services while enhancing safety. Techniques developed in this study – involving open-source data and minimal field work – may be useful to conifer forest managers with limited scientific funding.

中文翻译:

美国新墨西哥州中部社区管理的混合针叶林中薪材损失和恢复优先级的火灾后评估

摘要 为了战略性地管理森林资源,包括木材和薪材,必须了解严重火灾的原因和后果。由于土壤侵蚀和最近被烧毁的集水区挖掘出的碎片,洪水和由此产生的基础设施损坏加剧。2016 年,由新墨西哥州农村社区管理的黄松和皮农-杜松混合林被烧毁,破坏了可收获的薪材并破坏了进出道路。本研究的目的是: (1) 估计损失的薪材价值;(2) 确定导致道路损坏的烧毁集水区;(3) 制定优先恢复区域的标准;4) 根据对火灾状况、自然资源使用、生态动态和可行性的评估,推荐可能的森林管理行动。实地勘察促进了森林结构的基于图像的测绘,到 2018 年,烧伤严重程度和早期相继恢复。火灾前收集的高空间分辨率航拍图像用于绘制树木密度以及基于阴影长度和太阳角度的高度,并根据经验直径-高度关系推断茎体积。结果表明,1053 公顷的面积损失了 1.5-250 万美元的薪材。在严重烧毁、侵蚀性流域内确定了一个修复优先区域(112 公顷),连续植物覆盖​​有限。提出了用于恢复的计量经济学和景观尺度优化。概述了潜在的火灾管理策略,以最大限度地提高生态系统产品和服务,同时提高安全性。
更新日期:2020-04-01
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