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arXiv 2103.10901cs.LGstat.AP
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从静态预测到动态预测--基于多环境因子的野火风险评估

From Static to Dynamic Prediction: Wildfire Risk Assessment Based on Multiple Environmental Factors

University of Rochester(罗切斯特大学)

Tanqiu Jiang, Sidhant K. Bendre, Hanjia Lyu, Jiebo Luo

摘要:

野火是美国西海岸经常发生的最大灾害之一。人们已经做出了许多努力来了解近年来野火强度和频率增加的原因。在这项工作中,我们提出了静态和动态预测模型,分析和评估的地区与高野火风险在加利福尼亚州利用大量的环境数据,包括人口密度,归一化差异植被指数(NDVI),帕尔默干旱严重程度指数(PDSI),树木死亡面积,树木死亡数,和海拔高度。此外,我们注重更好地了解不同因素的影响,以便为预防行动提供信息。为了验证我们的模型和发现,我们将加利福尼亚州的土地划分为4,242个经纬度为0.1度$\times$ 0.1度的网格,并根据空间和时间条件计算每个网格的风险。为了验证模型的普适性,我们进一步将野火风险评估的范围从加利福尼亚州扩展到华盛顿州,而没有任何微调。通过进行反事实分析,我们发现了几种可能的方法对减少高风险野火数量的影响。总之,我们的研究有可能估计,监测和减少不同地区野火的风险,前提是这些环境数据可用。

英文摘要:

Wildfire is one of the biggest disasters that frequently occurs on the west coast of the United States. Many efforts have been made to understand the causes of the increases in wildfire intensity and frequency in recent years. In this work, we propose static and dynamic prediction models to analyze and assess the areas with high wildfire risks in California by utilizing a multitude of environmental data including population density, Normalized Difference Vegetation Index (NDVI), Palmer Drought Severity Index (PDSI), tree mortality area, tree mortality number, and altitude. Moreover, we focus on a better understanding of the impacts of different factors so as to inform preventive actions. To validate our models and findings, we divide the land of California into 4,242 grids of 0.1 degrees $\times$ 0.1 degrees in latitude and longitude, and compute the risk of each grid based on spatial and temporal conditions. To verify the generalizability of our models, we further expand the scope of wildfire risk assessment from California to Washington without any fine tuning. By performing counterfactual analysis, we uncover the effects of several possible methods on reducing the number of high risk wildfires. Taken together, our study has the potential to estimate, monitor, and reduce the risks of wildfires across diverse areas provided that such environment data is available.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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