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Fire effects on plant communities in Ozark woodlands and glades 火灾对奥扎克林地和荒地植物群落的影响
IF 5.1 3区 环境科学与生态学 Q1 ECOLOGY Pub Date : 2024-08-12 DOI: 10.1186/s42408-024-00299-3
Carolyn A. Stephen, Dan G. Drees, Jamie H. Ladner, Lauren L. Sullivan
Decades of fire suppression caused drastic changes to community structure and composition across ecosystems, including in Ozark woodlands in Missouri, USA. Reintroducing fire can restore ground flora by reducing midstory tree density, increasing ground layer light, and reducing leaf litter accumulation, but we lack a clear understanding of how these effects vary across time and space. We investigated the effects of repeated prescribed fire on ground flora species richness, floristic quality, abundance, community composition, and stand structure over 20 years in a landscape matrix of dry-mesic woodlands, dry woodlands, and glades using data collected from the Ozark National Scenic Riverways Fire Effects Monitoring program in the Current River Watershed in the Missouri Ozarks. We found that fire plays a key role in driving community structure and dynamics across community types, although with varying levels of intensity. Herbaceous species richness, abundance, and floristic quality index increased across all community types, while mean coefficient of conservatism decreased. Abundance and floristic quality effects were stronger in drier sites. Community composition changed with successive burns, resulting in several indicator species for post burn treatments. The density of midstory trees declined across community types with repeated fire. The number of burns significantly affected overstory tree density overall, but overstory tree density only declined in dry woodlands and glades and not in dry-mesic woodlands. Our results suggest that landscape fire shapes plant community structure and dynamics. Specifically, these findings show that fire effects vary among community types and suggest that land managers should consider landscape heterogeneity in fire application for restoration. Separate community types imbedded in the same landscape may respond to fire differently. Understanding repeated fire effects over several decades across multiple community types is critical to informing fire-driven woodland restoration across landscape scales.
几十年的禁火使整个生态系统的群落结构和组成发生了巨大变化,包括美国密苏里州的奥扎克林地。重新用火可以通过降低中层树木密度、增加地表光照和减少落叶堆积来恢复地面植物群落,但我们对这些影响在不同时间和空间的变化缺乏清晰的认识。我们利用从密苏里州奥扎克水流河流域的奥扎克国家风景河道火灾影响监测项目收集到的数据,研究了在 20 年内,在由干燥多针叶林地、干燥林地和峡谷组成的景观基质中,重复用火对地面植物区系物种丰富度、花卉质量、丰度、群落组成和林分结构的影响。我们发现,火灾在推动各种类型群落的结构和动态方面起着关键作用,尽管强度各不相同。所有群落类型的草本物种丰富度、丰度和花卉质量指数都有所提高,而平均保守系数则有所下降。在较干旱的地点,物种丰富度和植物质量的影响更大。群落组成随着连续烧毁而改变,从而产生了一些烧毁后处理的指示物种。在不同群落类型中,中层树木的密度随着多次烧毁而下降。焚烧次数对上层林木密度的总体影响很大,但上层林木密度仅在干燥林地和沼泽地有所下降,而在干燥混交林地则没有下降。我们的研究结果表明,地貌火灾会影响植物群落的结构和动态。具体而言,这些研究结果表明,火灾对不同群落类型的影响各不相同,并建议土地管理者在应用火灾进行恢复时应考虑景观的异质性。位于同一地貌中的不同群落类型可能会对火灾做出不同的反应。了解多种群落类型在数十年中反复出现的火灾效应,对于在景观尺度上为火灾驱动的林地恢复提供信息至关重要。
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引用次数: 0
Retraction Note: Shapley-based interpretation of deep learning models for wildfire spread rate prediction 撤稿说明:基于 Shapley 的深度学习模型对野火蔓延率预测的解释
IF 5.1 3区 环境科学与生态学 Q1 ECOLOGY Pub Date : 2024-08-12 DOI: 10.1186/s42408-024-00307-6
Faiza Qayyum, Nagwan Abdel Samee, Maali Alabdulhafith, Ahmed Aziz, Mohammad Hijjawi
This article has been retracted. Please see the Retraction Notice for more detail: https://doi.org/10.1186/s42408-023-00242-y.
本文已被撤回。详情请见撤稿通知:https://doi.org/10.1186/s42408-023-00242-y。
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引用次数: 0
Evaluating crown scorch predictions from a computational fluid dynamics wildland fire simulator 评估计算流体力学野地火灾模拟器对树冠焦枯的预测
IF 5.1 3区 环境科学与生态学 Q1 ECOLOGY Pub Date : 2024-08-12 DOI: 10.1186/s42408-024-00291-x
Adam L. Atchley, Chad M. Hoffman, Sophie R. Bonner, Scott M. Ritter, Joseph O’Brien, Rodman R. Linn
Crown scorch—the heating of live leaves, needles, and buds in the vegetative canopy to lethal temperatures without widespread combustion—is one of the most common fire effects shaping post-fire canopies. Despite the ability of computational fluid dynamic models to finely resolve fire activity and buoyant plume dynamics including heterogenous 3D distributions of forest canopy heating, these models have had only limited use in simulating fire effects and have not been used to evaluate crown scorch. Here, we demonstrate a method of evaluating crown scorch using a computational fluid dynamics model, FIRETEC, and validate this approach by simulating the experiments that were used to develop Van Wagner’s 1973 crown scorch model. The average scorch height prediction from FIRETEC compares well with the empirical model derived by Van Wagner, which is the most widely used empirical model for crown scorch. We further find that the 3D buoyant plume dynamics from a steady and homogeneous idealized heat source on the ground results in a spatially heterogenous crown scorch pattern reflecting complex heating dynamics that are best represented by percent scorch rather than height of scorch. The ability of the computational fluid dynamics model to capture variation in crown scorch due to 3D buoyant plume dynamics provides direct links between forest structure, fire behavior, and fire effects that can be used by forest managers and researchers to better understand how fires result in crown damage under various environmental and management scenarios.
树冠烧焦--植被冠层中的活叶、针叶和芽被加热到致命的温度而不发生大面积燃烧--是塑造火后冠层的最常见火灾效应之一。尽管计算流体动力学模型能够精细解析火灾活动和浮力羽流动力学,包括森林冠层加热的异质三维分布,但这些模型在模拟火灾效应方面的应用非常有限,而且尚未用于评估树冠烧焦。在这里,我们展示了一种使用计算流体动力学模型 FIRETEC 评估树冠烧焦的方法,并通过模拟用于开发 Van Wagner 1973 年树冠烧焦模型的实验验证了这种方法。FIRETEC 预测的平均灼烧高度与 Van Wagner 得出的经验模型相比较,后者是目前使用最广泛的树冠灼烧经验模型。我们进一步发现,来自地面上稳定、均匀的理想化热源的三维浮力羽流动力学会导致空间上异质的树冠烧焦模式,反映出复杂的加热动力学,最好用烧焦百分比而不是烧焦高度来表示。计算流体动力学模型能够捕捉三维浮力羽流动力学导致的树冠焦枯变化,这为森林管理者和研究人员提供了森林结构、火灾行为和火灾影响之间的直接联系,有助于他们更好地了解火灾如何在各种环境和管理情景下导致树冠受损。
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引用次数: 0
Retraction Note: Wildfire risk exploration: leveraging SHAP and TabNet for precise factor analysis 撤稿说明:野火风险探索:利用 SHAP 和 TabNet 进行精确因子分析
IF 5.1 3区 环境科学与生态学 Q1 ECOLOGY Pub Date : 2024-08-12 DOI: 10.1186/s42408-024-00313-8
Faiza Qayyum, Harun Jamil, Tariq Alsboui, Mohammad Hijjawi
This article has been retracted. Please see the Retraction Notice for more detail: https://doi.org/10.1186/s42408-023-00236-w.
本文已被撤回。详情请见撤稿通知:https://doi.org/10.1186/s42408-023-00236-w。
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引用次数: 0
Retraction Note: Analyzing the impacts of node density and speed on routing protocol performance in firefighting applications 撤稿说明:分析消防应用中节点密度和速度对路由协议性能的影响
IF 5.1 3区 环境科学与生态学 Q1 ECOLOGY Pub Date : 2024-08-06 DOI: 10.1186/s42408-024-00310-x
Inam Ullah, Tariq Hussain, Aamir Khan, Iqtidar Ali, Farhad Ali, Chang Choi
This article has been retracted. Please see the Retraction Notice for more detail: https://doi.org/10.1186/s42408-023-00220-4.
本文已被撤回。详情请见撤稿通知:https://doi.org/10.1186/s42408-023-00220-4。
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引用次数: 0
Retraction Note: Federated recognition mechanism based on enhanced temporal-spatial learning using mobile edge sensors for firefighters 撤稿说明:基于增强时空学习的联合识别机制,利用移动边缘传感器为消防员提供服务
IF 5.1 3区 环境科学与生态学 Q1 ECOLOGY Pub Date : 2024-08-02 DOI: 10.1186/s42408-024-00308-5
Harun Jamil, Khan Murad Ali, Do-Hyeun Kim
This article has been retracted. Please see the Retraction Notice for more detail: https://doi.org/10.1186/s42408-023-00203-5.
本文已被撤回。详情请参见撤稿通知:https://doi.org/10.1186/s42408-023-00203-5。
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引用次数: 0
Retraction Note: FireXnet: an explainable AI-based tailored deep learning model for wildfire detection on resource-constrained devices 撤稿说明:FireXnet:基于人工智能的可解释定制深度学习模型,用于资源受限设备上的野火检测
IF 5.1 3区 环境科学与生态学 Q1 ECOLOGY Pub Date : 2024-08-02 DOI: 10.1186/s42408-024-00309-4
Khubab Ahmad, Muhammad Shahbaz Khan, Fawad Ahmed, Maha Driss, Wadii Boulila, Abdulwahab Alazeb, Mohammad Alsulami, Mohammed S. Alshehri, Yazeed Yasin Ghadi, Jawad Ahmad
This article has been retracted. Please see the Retraction Notice for more detail: https://doi.org/10.1186/s42408-023-00216-0.
本文已被撤回。详情请参见撤稿通知:https://doi.org/10.1186/s42408-023-00216-0。
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引用次数: 0
Assessing four decades of fire behavior dynamics in the Cerrado biome (1985 to 2022) 评估塞拉多生物群落四十年(1985 年至 2022 年)的火灾行为动态
IF 5.1 3区 环境科学与生态学 Q1 ECOLOGY Pub Date : 2024-07-31 DOI: 10.1186/s42408-024-00298-4
Vera Laísa da Silva Arruda, Ane Auxiliadora Costa Alencar, Osmar Abílio de Carvalho Júnior, Fernanda de Figueiredo Ribeiro, Filipe Viegas de Arruda, Dhemerson Estevão Conciani, Wallace Vieira da Silva, Julia Zanin Shimbo
Fire significantly transforms ecology and landscapes worldwide, impacting carbon cycling, species interactions, and ecosystem functions. In the Brazilian Cerrado, a fire-dependent savanna, the interaction between fire, society, and the environment is evident. Given that wildfires significantly contribute to greenhouse gas emissions, our study aimed to analyze four decades of burned area data to understand changes in fire dynamics, using Collection 2 of annual MapBiomas Fire maps (1985 to 2022). Our study examined spatiotemporal patterns, fire recurrence, fire distribution across land uses, temporal changes in fire scar size, burned area variations across ecoregions, and their correlation with farming areas. From 1985 to 2022, fire impacted 40% (792,204 km2) of the Cerrado biome, with 63% burning more than once. Natural vegetation was the most affected, primarily due to human-driven ignition during the dry season. A noticeable trend of later peaks in fire activity, concentrated towards the end of the dry season, along with an increase in patch size over time, characterized a clear shift in the Cerrado fire regime. Recently, the MATOPIBA region and the northern biome exhibited significant fire clusters, with burned areas rising alongside farming expansion. The ecoregion-based analysis identified fire hotspots, with the "Bananal" ecoregion, the largest wetland area in the biome, exhibiting increased fire recurrence and larger patch size over time. Our four-decade analysis of fire dynamics in the Cerrado revealed human-induced changes in the fire regime, originally shifting from July to September to a new fire season from August to October. This shift poses several environmental threats given their overlap with the driest months of the year. This study improved our understanding of changes in fire patterns and their impacts on each ecoregion and land use. Wetlands experienced the highest relative burned area, highlighting their ecological importance and increased vulnerability. In the southern Cerrado, where farming is established and natural vegetation more fragmented, fire events tend to decrease; while in the north, with recent farming expansion, fire susceptibility rises. Conservation-oriented strategies, like the Brazilian Integrated Fire Management (MIF), are crucial for mitigating impacts while enhancing the Cerrado’s resilience to climate change.
火灾极大地改变了世界各地的生态和地貌,对碳循环、物种互动和生态系统功能产生了影响。巴西的塞拉多(Cerrado)是一种依赖火灾的热带稀树草原,火灾、社会和环境之间的相互作用显而易见。鉴于野火对温室气体排放有重大影响,我们的研究旨在利用 MapBiomas 火灾地图年度资料集 2(1985 年至 2022 年)分析四十年来的烧毁面积数据,以了解火灾动态的变化。我们的研究考察了时空模式、火灾复发率、火灾在不同土地利用中的分布、火疤大小的时间变化、不同生态区烧毁面积的变化及其与农耕区的相关性。从 1985 年到 2022 年,火灾影响了塞拉多生物群落 40% 的面积(792,204 平方公里),其中 63% 的面积被烧毁不止一次。自然植被受到的影响最大,这主要是由于在旱季人为点火造成的。一个明显的趋势是,火灾活动的高峰期较晚,集中在旱季末期,同时随着时间的推移,斑块的面积也在扩大,这是塞拉多火灾机制发生明显变化的特征。最近,马托皮巴(MATOPIBA)地区和北部生物群落出现了明显的火灾集群,农耕扩张的同时,火灾面积也在增加。基于生态区域的分析确定了火灾热点,"巴纳纳尔 "生态区域是生物群落中最大的湿地区域,随着时间的推移,火灾复发率增加,斑块面积扩大。我们对塞拉多地区火灾动态进行了长达四十年的分析,结果表明人为因素导致火灾发生率发生了变化,最初的火灾季节从七月到九月,现在则从八月到十月。由于与一年中最干旱的月份重叠,这种变化带来了一些环境威胁。这项研究加深了我们对火灾模式变化及其对各生态区和土地利用的影响的了解。湿地的相对烧毁面积最大,凸显了其生态重要性和脆弱性的增加。在南部的塞拉多地区,农耕已经确立,自然植被更加分散,火灾事件趋于减少;而在北部,随着农耕的扩展,火灾易发性上升。以保护为导向的战略,如巴西综合火灾管理(MIF),对于减轻影响,同时增强塞拉多对气候变化的适应能力至关重要。
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引用次数: 0
Overstory and fuel traits drive moisture dynamics of mesophytic and pyrophytic leaf litter and 10-h woody debris fuels in a mixed longleaf pine-hardwood woodland 长叶松-硬木混交林地中的中生落叶层和火烧落叶层以及 10 小时木质碎屑燃料的水分动态受上层植物和燃料特性的影响
IF 3.6 3区 环境科学与生态学 Q1 ECOLOGY Pub Date : 2024-07-29 DOI: 10.1186/s42408-024-00294-8
Luiza Gonçalves Lazzaro, Heather D. Alexander, Jeffery B. Cannon, Michael J. Aspinwall
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引用次数: 0
Taking the next step in wildfire education: integrating multiple knowledge forms into co-produced high school fire science curricula 野火教育的下一步:将多种知识形式纳入共同制作的高中消防科学课程
IF 5.1 3区 环境科学与生态学 Q1 ECOLOGY Pub Date : 2024-07-25 DOI: 10.1186/s42408-024-00296-6
Christina Restaino, Spencer Eusden, Megan Kay
The wildfire issue in the western United States presents a complex challenge that impacts both society and the environment. Implementing K-12 education programs focused on wildfire can play a significant role in addressing this issue. By integrating wildfire education into school curricula, teachers can equip students with the knowledge and skills needed to understand fire ecology, land management, and wildfire preparedness. Early exposure to wildfire science education can also connect students with viable career paths in fire and ecosystem management. We used our position as Cooperative Extension educators in Nevada’s Living With Fire Program to catalyze fire science knowledge through creating a high school wildfire science curriculum that is focused on fire ecology, wildfire preparedness, and career exposure. We used a transdisciplinary approach to create educational materials that are effective, relevant, and accurately represent wildfire in Nevada. We integrated five different knowledge forms (technical, cultural, management, institutional, and student) to create a robust curriculum that includes many different stakeholder priorities and values, while still meeting the needs of students and teachers. Our initial impacts assessment demonstrates that our curriculum instruction is creating learning advances in fire ecology and wildfire preparedness. We assert that this curriculum and other wildfire education programs in our region can increase our overall capacity for living with fire.
美国西部的野火问题是一个复杂的挑战,对社会和环境都有影响。实施以野火为重点的 K-12 教育计划可在解决这一问题方面发挥重要作用。通过将野火教育纳入学校课程,教师可以让学生掌握了解火灾生态、土地管理和野火防备所需的知识和技能。早期接触野火科学教育还可以将学生与火灾和生态系统管理方面的可行职业道路联系起来。我们利用自己作为内华达州 "与火共存 "计划合作推广教育工作者的身份,通过创建一个高中野火科学课程来催化火灾科学知识,该课程侧重于火灾生态学、野火防备和职业接触。我们采用跨学科的方法来制作有效、相关且能准确反映内华达州野火情况的教育材料。我们整合了五种不同的知识形式(技术、文化、管理、机构和学生),以创建一个强大的课程,其中包括许多不同利益相关者的优先事项和价值观,同时还能满足学生和教师的需求。我们的初步影响评估表明,我们的课程教学正在推动火灾生态学和野火防范方面的学习。我们断言,该课程和本地区的其他野火教育计划能够提高我们与火共存的整体能力。
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引用次数: 0
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Fire Ecology
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