结合气象要素的闽西北森林火险等级区划

The forest fire danger division in the northwest of Fujian in combination with meteorological elements

应用闽西北地区10个气象观测站2000—2013年降水量、平均相对湿度、年平均最高气温等资料,及森林火灾的统计数据、林地数据,探讨气象要素对闽西北森林火灾的影响,对闽西北地区森林火险等级区划进行了分析和区划。结果表明,10 a间森林火灾发生次数呈周期性,后5 a虽然火灾总数减少,但造成的灾害更大。森林火险区划结果为:大田县为一级火险区;尤溪县为二级火险区;沙县、永安市、清流县、宁化县县为三级火险区;建宁县、泰宁县、将乐县、明溪县、三明市市辖区为四级火险区。

Based on the ten meteorological observatory＇ s average air temperature, average relative humidity, precipitation and forest fire data of northwest of Fujian from 1986 to 2015, the influences of meteorological elements on the forest fire of northwestern Fujian were discussed , and the forest fire danger rating region division of north- western Fujian was analyzed. The results show that the forest fire frequency presents in cycles during decade, al- though the total number of forest fires decreased for the later 5 years, but caused more disasters. The forest fire danger division results is as follows ： Datian county as the level of fire danger division ; Youxi county as the second fire danger division; Shaxian, yongan, Qingliu, Ninghua county is third fire danger division;Taining Jiangle,Jian- ning, Mingxi and Sanming was the fourth fire danger division.