【摘要】 对1996—2013年长汀县森林火灾发生演变情况以及相应的气象条件的分析表明:近20年森林火灾发生次数和过火面积均呈现上升趋势,每年10月至次年3月为森林火险高发时段,火灾地域分布以河田为中心呈环状递减分布。近20年平均气温、平均风速逐年增加和相对湿度的逐年减少变化趋势,是森林火险状况上升的促进因素。更多还原

【Abstract】 According to the analysis of the forest fire and meteorological condition in Changting county from 1996 to 2013, the result indicated that for nearly 20 years, the frequency and fire area of forest fire showed a rising trend; the high-risk period for forest fire is from October to next March every year; the regional distribution of fire showed a decreasing trend, with river and field as the center. The meteorological conditions promote the rise of forest fire, such as the increasing average temperature and average wind speed, and the reduction in relative humidity year by year.更多还原