论文部分内容阅读
以冀西北山区华北落叶松人工林为研究对象,分析了其材积的变化和生物量的分配规律,建立了树干材积和生物量之间的回归模型,结果表明:随着树木的生长,树高达到一定高度后,树高生长减缓,材积的年平均增长量呈增加趋势;各器官生物量分配从大到小依次为干>根>枝>叶,随林龄的增加都呈增加趋势;树干生物量与其材积之间存在着密切的相关关系,回归方程精度高,可用于该地区华北落叶松的生物量和材积的换算。
Taking the Larix principis-rupprechtii plantation in the mountainous area of northwestern Hebei Province as the research object, the change of its volume and biomass distribution were analyzed. The regression model between the trunk volume and the biomass was established. The results showed that with the growth of the tree, After reaching a certain height, the growth of tree height slowed down and the annual average volume increment of timber volume showed an increasing trend. The distribution of biomass of all organs wentverned as follows: stem> root> branch> leaf, with increasing age; There is a close relationship between biomass and its volume, and the regression equation is of high precision and can be used for the conversion of biomass and volume of Larix principis-rupprechtii in this region.