Delineating Fire-Hazardous Areas and Fire-Induced Patterns Based on Visible Infrared Imaging Radiometer Suite (VIIRS) Active Fires in Northeast China
Delineating Fire-Hazardous Areas and Fire-Induced Patterns Based on Visible Infrared Imaging Radiometer Suite (VIIRS) Active Fires in Northeast China
复制标题
基于可见红外成像辐射计套件 (VIIRS) 勾画中国东北地区的火灾危险区域和火灾诱发模式
DOI：
10.3390/rs14205115
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Zhi
中科院分区：
文献类型：
--
作者：
Wenjun Li;Peng Li;Zhi
(1) 背景：火灾影响全球生物量积累较高的农业和/或森林生态系统。然而，根据卫星获得的主动火灾强度来划分火灾危险区域尚未得到充分研究。因此，研究火灾发生和发展的特征对于划分火灾危险区域、促进火灾管理具有重要作用。 （2）方法：利用可见红外成像辐射计套件（VIIRS）主动火灾制定火灾强度（FI）指数，然后应用于识别中国东北地区的火灾危险区域。结合地形、土地覆盖和净初级生产力（NPP），对活跃火灾发生的时空特征进行了一致分析。接下来，构建了概念决策树模型来描绘中国东北地区受各种因素影响的火灾引发模式。 (3)结果：FI指数定义的活动火灾的偶发区、多发区、易发区和高发区分别占31.62%、30.97%、26.23%和11.18%。 90%以上的火灾发生在海拔<350 m、坡度<3°、NPP在2500-5000 kg·C/m2之间的地区。同样，约 75% 发生在农田和森林中。然后，对不同因素驱动的四种火灾引发概念模式进行了分类，包括NPP范围为2500-5000 kg·C/m2的农业和森林活动火灾引发模式（即Agri模式和FRST模式），以及另外两种与海拔<350 m asl的聚落和未利用地相关的火灾引发模式。东北地区以农业秸秆焚烧为主。 （4）结论：尽管国家禁止露天焚烧秸秆，但近十年来东北地区农业生产引起的火灾频繁发生，其次是小规模、零星的森林火灾。定义火灾危险区域和不同火灾发生模式的方法对于大陆到全球范围内的火灾管理和风险预测具有重要意义。
(1) Background: Fire affects global agricultural and/or forest ecosystems with high biomass accumulation. However, the delineation of fire-hazardous areas based on satellite-derived active fire intensity is not well-studied. Therefore, examining the characteristics of fire occurrence and development plays an important role in zoning fire-hazardous areas and promoting fire management. (2) Methods: A fire intensity (FI) index was developed with Visible Infrared Imaging Radiometer Suite (VIIRS) active fires and then applied to identify fire-hazardous areas in Northeast China. Combined with terrain, land cover and net primary productivity (NPP), the spatial and temporal characteristics of active fire occurrence were consistently analyzed. Next, a conceptual decision tree model was constructed for delineating fire-induced patterns impacted by varied factors in Northeast China. (3) Results: The accidental, frequent, prone and high-incidence areas of active fires defined by the FI index accounted for 31.62%, 30.97%, 26.23% and 11.18%, respectively. More than 90% of active fires occurred in areas with altitude <350 m above sea level (asl), slope <3° and NPP between 2500–5000 kg·C/m2. Similarly, about 75% occurred in cropland and forest. Then, four fire-induced conceptual patterns driven by different factors were classified, including the agricultural and forest active fire-induced patterns (i.e., the Agri-pattern and FRST pattern) with NPP ranging 2500–5000 kg·C/m2, and two others related to settlements and unused land with an altitude <350 m asl. The Agri-pattern dominates in Northeast China because of agricultural straw burning. (4) Conclusions: Despite the national bans of open burning of straws, active fires due to agricultural production have occurred frequently in Northeast China in the last decade, followed by small and sporadic forest fires. The approach for defining fire-hazardous areas and varied fire occurrence patterns is of significance for fire management and risk prediction at continental to global scales.
影响因子：
1.7
作者：
Laris, P.;Dadashi, S.;Wechsler, S.
通讯作者：
Wechsler, S.