全球野火多发区域火灾风险数据集

该数据集为全球野火多发区火灾风险指数产品，具体为中国西南部、澳大利亚北部、欧洲南部、非洲中部、美国西海岸等五个区域2000-2018年8天合成，500米空间分辨率火灾风险指数产品。该数据集为全球野火多发区域科学研究及防火部门提供火灾风险参考数据。2000年至2018年期间，全球森林火烧迹地面积在0.60亿hm²至0.97亿hm2之间，年际波动大。相对集中的分布区域主要包括非洲中部和南部、澳大利亚北部、南美洲中北部等，其中非洲森林火烧迹地面积占全球的60%以上。火灾对森林净初级生产力产生显著影响，在火灾发生当年，森林净初级生产力呈现明显下降，一般在随后的三至四年内逐渐得以恢复。
全球五个森林火灾多发区域中，澳大利亚北部、欧洲南部森林火险无明显趋势变化，中国西南部、非洲中部和美国西海岸森林火险虽维持在较高状态但呈微弱下降趋势。

This dataset is a fire risk index product for globally fire-prone regions, specifically an 8-day composite fire risk index product with 500-meter spatial resolution covering five regions: southwestern China, northern Australia, southern Europe, central Africa, and the U.S. West Coast, spanning 2000 to 2018. This dataset provides reference fire risk data for scientific research and fire prevention departments in global fire-prone regions.
Between 2000 and 2018, the global forest burned area ranged from 0.60 billion to 0.97 billion hectares, with large interannual fluctuations. The relatively concentrated distribution areas mainly include central and southern Africa, northern Australia, and central and northern South America, among which the forest burned area in Africa accounts for more than 60% of the global total.
Wildfires have a significant impact on forest net primary productivity (NPP). In the year of a fire occurrence, forest NPP exhibits a notable decline, and generally gradually recovers over the subsequent three to four years.
Among the five global forest fire-prone regions, northern Australia and southern Europe show no obvious trend in forest fire risk. Although forest fire risk remains at a relatively high level in southwestern China, central Africa, and the U.S. West Coast, it displays a weak downward trend.

搜集汇总

背景与挑战

背景概述

该数据集是一个全球野火多发区域的火灾风险指数产品，覆盖2000年至2018年，空间分辨率为500米，时间分辨率为8天，聚焦于中国西南部、澳大利亚北部、南欧、中非和美国西海岸五个区域。它基于多源遥感、气象和地形数据，通过火灾风险三角模型和深度学习算法生成，提供从0到1的定量风险指数，用于支持全球野火研究和防火部门的决策参考。