The Study on Spatial Pattern of Satellite Monitoring Hotspots and Forest Fires in Yunnan

Hotspots data in 2007—2013 provided by Forest Fire Monitoring Center of State Forestry Administration and Southwest Satellite Forest Fire Monitoring Subcenter were analyzed to explore the spatial pattern of satellite monitoring hotspots and forest fires in Yunnan province from 2007 to 2013, and the Kernel Density method in ARCGIS Spatial Analyst Module were employed. The results indicated that annual density of hotspot and forest fire was 00058 and 00009 per square kilometer, respectively. Hotspots and forest fires were both spatial aggregation in Yunnan province, and these distributions could be divided in low density (< 00064; < 00032), medium density (00064-00177, 00032-00122) and high density (00177-00687, 00122-00414) three subregion. The results also showed that the spatial aggregation pattern of hotspots and forest fires is discrepant, the high density area of hotspots is concentrated in agriculture and forestry priority development region in Yunnan province, such as Puer, Xishuangebanna, Dehong, Honghe and Wenshan. Contrastly, forest fires occurred mainly in Yunnan pine forest in central Yunnan, warmtemperate savanna shrub and grass, and alpine coniferous forests in northwest Yunnan, while forest fire density is low in south and southwest Yunnan, where the density of hotspots is high. Our results may provide a reference for the construction of fire prevention infrastructure, firefighting ability construction, and the management of daily patrol.