地处天山东部的哈密林区,至今已经三十五年没有发生森林火灾了。在全国护林防火战线上,树立了一面旗帜。为什么哈密地区能做到多年不发生森林火灾?这是许多同志所关心并想了解的问题。 哈密林区,年降水量平均二百五十毫米左右,哈密绿洲年降水量才三十多毫米,两者相比,林区是比较湿润。但与天山西部和中部林区相比,则是干燥的林区。年降水量比 It is located in the Hamulin area in the east of Tianshan Mountains. There have been no forest fires for 35 years. In the national forest fire front, set a banner. Why does not Hami area have many years of forest fires? This is what many comrades are concerned about and want to understand. In the area of ​​Hamelin, the annual precipitation is about 250 millimeters on average, and the annual rainfall in Hami Oasis is more than 30 millimeters. Compared with the two, the forest area is relatively humid. However, compared with the western and central Tianshan forests, it is a dry forest. Annual precipitation ratio