Abstract:
The forest fire is an important factor of disturbing forest growth. Sichuan province was located in the southwest forest area with a high occurrence density area of forest fires.It could contribute to the forest fire prevention work by analyzing the distribution characteristics of fire occurrence in Sichuan province. Based on the MODIS fire product (MOD14A2/MYD14A2), Ripley K function, center point, standard deviational ellipse method and Kerne1 Density method were employed and the data clock was used to explore the spatial-temporal distribution of forest fires in Sichuan province from 2001 to 2012. The results showed that the annual forest fires fluctuated greatly in Sichuan province. The peak periods of forest fires were in January, February, March, April and May, and the number of forest fires continued to rise every year. On smaller spatial scale (less than 528 km), the spatial pattern of forest fires was clustering. The median center of forest fires occurred in Panzhihua city in 12 years, which was the area with highest fire density. The hot spots of forest fires were also located at Liangshan Yi Autonomous Prefecture and Ganzi Tibetan Autonomous Prefecture. The overall spread trend was to extend northwest to Ganzi Tibetan Autonomous Prefecture.