北京十三陵林场公益林可燃物特征与经营

THE PUBLIC WELFARE FOREST COMBUSTIBLE CHARACTERISTIC AND MANAGEMENT OF BEIJING MING TOMBS FARM

针对北京十三陵林场的森林状况,对森林可燃物特征进行了研究和分析,选取了十三陵林场的127个小班为研究对象,以样地内的植物树种组成、林分年龄、郁闭度、坡度、坡向、海拔高度、乔木生物量、草本高度和盖度、灌木高度和盖度为基本因子,结合可燃物的结构特征、生物量特征和可燃物的分布特征,对基本因子的燃烧性进行排序,并赋值划分一定的等级,最后得出综合燃烧性指标,以此为准划分燃烧性等级,统计不同等级所包含的小班面积和所占百分比。并针对这些可燃物特征提出了公益林管理与经营的措施。

This article in view of the Beijing Ming Tombs tree farm forest condition, has conducted the research and the analysis to the forest combustible substance characteristic, has selected the Ming Tombs tree farm 127 bottom classes in kindergarten is the object of study, take the type place in plant tree species composition, the stand age, the shade density, the slope, the slope to, the altitude above sea level, the tree biomass, the herb highly with the degree of cover, the bush highly with the degree of cover as the basic factor, the union combustible substance structure characteristic, the biomass characteristic and the combustible substance distributed characteristic, carries on sorting to the basic factor flammability, and evaluates division certain rank, finally obtains the comprehensive flammable target, take this as the accurate division flammable rank, the bottom class in kindergarten area which the statistical different rank contains With accounts for the percentage. And aimed at these combustible substance characteristic to propose the public welfare forest management and the management measure.