论文部分内容阅读
通化市位于吉林省东南部,森林复被率49.3%,由于山火和其它破坏植被的原因,给生态平衡带来很大影响。据不完全统计,建国30多年来山林过火面积89万亩,自1980年进一步加强森林保护工作以来,已保持6年无大森林火灾。1985年全市实现无森林火灾,有效的保护了森林资源,促进了林业发展。一、气候条件决定春、秋两季为火险期通化市地区年平均气温3—6度。集安县老岭以南,一般温度最高,年平均气温在6度以上,有吉林省“小江南”之称。全年以一月最冷,平均气温在零下16—18度,七月最热,平均气温为20—23度,极端最高气温一般为35度左右,极端最低气温为零下35度左右。全年无霜期一般在120—140天,由于地形和地理位置不同,无霜期长短差异较大,如
Tonghua City, located in the southeast of Jilin Province, the forest coverage rate of 49.3%, due to mountain fire and other causes of damage to vegetation, to bring a great impact on ecological balance. According to incomplete statistics, the forest fire area over 89 years since the founding of the People’s Republic was 89 million mu. Since the forest protection work was further strengthened in 1980, the forest fire has remained unchanged for six years. In 1985, the whole city realized no forest fire, effectively protected the forest resources and promoted the forestry development. First, the climatic conditions determine the spring and autumn are the insurance period Tonghua City, the annual average temperature of 3-6 degrees. Jiuling County, south of Laoling, generally the highest temperature, the annual average temperature above 6 degrees, Jilin Province, “small Jiangnan,” said. The coldest month in January with an average temperature of minus 16-18 degrees, the hottest July, the average temperature of 20-23 degrees, the extreme maximum temperature is generally 35 degrees, the extreme minimum temperature of minus 35 degrees. Frost-free period throughout the year is generally 120-140 days, due to the different topography and geographical location, frost-free period vary greatly in length, such as