基于风云气象卫星对泸州市近十年森林火灾的分析

Analysis of Forest Fire in Luzhou City in Recent Ten Years Based on Fengyun Meteorological Satellite

摘要: 以泸州市2011~2020年的风云系列卫星数据为基础，通过FY-3B卫星的VIRR通道，对其3，4通道的亮温与3，4通道的背景亮温的差值设置阈值，利用固定阈值法，排除疑似火点，云体，水体等干扰，对泸州市近十年火点进行分析。结果表明：1) 合江为泸州市火灾高发区。2) 七八月份为泸州市火灾高发时期3) 泸州市每年火灾发生次数总体趋势在逐渐减少。4) 泸州市火灾发生的主要区域在28.7N~29N，105.2E~105.9E。

Abstract: Based on the data of Fengyun series satellites of Luzhou city from 2011 to 2020, the difference between the bright temperature of channel 3 and 4 and the background bright temperature of channel 3 and 4 was set as a threshold through the VIRR channel of FY-3B satellite. The fixed threshold method was used to eliminate the interference of suspected fire point, cloud body, wa-ter body and so on, and the fire point of Luzhou city in recent ten years was analyzed. The results show that: 1) Hejiang is a high incidence area of fire in Luzhou city. 2) In July and August, there is a high incidence of fire in Luzhou city. 3) The overall trend of the number of fire incidents in Luzhou city every year is gradually decreasing. 4) The main area of fire in Luzhou city is located at 28.7N - 29N, 105.2E - 105.9E.