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Anthropogenic Fires in West African Landscapes: A Spatially Explicit Model Perspective of Humanized Savannas

机译:西非景观中的人为火灾:人性化大草原的空间显式模型视角

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摘要

Fire regimes are important components of environmental dynamics, but our understanding of them is limited. Despite recent advances in the methodologies used to remotely sense and map fires and burned areas and new case studies that shed light on local fire use and management practices, the scientific community still has much to learn about anthropogenic fire regimes. We identify two areas for improvement: first, the fine-scale heterogeneity of fire dynamics for specific regions is often masked by global-scale approaches, and second, barriers between the disciplines focusing on fire impacts hamper the development of knowledge of the human dimensions of fire regimes. To address the “blind spot” that these limitations create, we present a simple dynamic model of fire ignition in savanna systems. The aim is to connect the local and global scales of fire regimes by focusing on human fire management (anthropogenic fire). Our dynamical model is based on a study area in Western Burkina Faso and integrates biophysical elements (climate and soil data), land cover, and fire management scenarios based on field surveys. The simulation results offer contrasting views of the impact of local fire management practices on regional fire regimes observed in savannas. Fire density and frequency are local variables that clearly change the fire regimes despite a complex and constrained biophysical system. This experience, drawing from fieldwork and modelling, may be a way to integrate some key aspects of anthropogenic fire research in savanna systems.
机译:消防制度是环境动态的重要组成部分,但我们对它们的理解是有限的。尽管近期用于远程感知和绘制火灾和烧毁区域的方法以及落下当地火灾使用和管理实践的新案例研究,但科学界仍然有很多关于人为消防制度。我们确定两个改进区域:首先,特定地区的火力动力学的细尺异质性往往被全球范围的方法掩盖,第二个,专注于火灾的学科之间的障碍妨碍了人类尺寸的知识的发展消防制度。解决“盲点和rdquo;这些限制创造,我们在大草原系统中展示了一个简单的火点火模型。目的是通过专注于人的火灾管理(人为火灾)来连接当地和全球尺度的消防制度尺度。我们的动态模型基于西部布基纳法索的研究区,并基于现场调查,整合生物物理元素(气候数据),陆地覆盖和火灾管理方案。仿真结果提供了对在大草原中观察到的区域火灾制度对区域火灾管理的影响的对比。消防密度和频率是局部变量,尽管生物物理系统具有复杂和约束的生物物理系统,但是尽管是复杂和受约束的生物物理系统,但是尽管是复杂和受限的生物物理系统。这种经验来自FieldWork和建模,可能是在大草原系统中整合人为消防研究的一些关键方面的一种方式。

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