摘要
林分结构在生态学角度主要研究林木在林分中的空间占有状态,是提高森林生产力的重要因素。本文对不同林龄兴安落叶松的林分结构进行研究分析,得出兴安落叶松中幼龄林0~5 cm的个体占80~95%,随林龄的增长,林分龄级结构、直径结构及断面积结构出现多样化,林分逐渐达到成熟、稳定,其林分直径结构和断面积结构分布均出现偏正态分布。随龄级的不断增大,兴安落叶松生物量和碳储量均出现了递增的趋势,从幼龄林到过熟林其生物量分布为158.53~395.64 t/hm^2,碳储量分布为70.47~175.86 t/hm^2。林分结构的优良体现森林生产力的大小,但是碳储量的大小不能说明森林固碳能力的大小。
Stand structure that used to study the information of spatial pattern of trees plays an important role in forestry productivi-ty. The stand structure of Larix gemelinii of different ages was studied in this paper. The results showed that young forest with diameter ranging 0 -5 cm accounts for 80 -95% of all the young growth forest. Along with increasing of ages, the stand age structure, tree di-ameter range and structure of sectional area were various and the stand remained mature and stable. Diameters of forest and sectional are-as exhibited the normal distribution. Along with the increasing of ages, both the biomass and carbon sequestration had an increasing trend. Biomass and carbon storage of forest ranges from 158. 53 to 395. 64t/hm^2 and from 70.47 to 175. 86t/hm^2 respectively. The quali-ty of stand structure reflects the productivity of forest, but the carbon storage fails to indicate the carbon sequestration capacity.
出处
《森林工程》
2017年第1期16-21,共6页
Forest Engineering
基金
内蒙古科技计划项目(20120419)
关键词
林分结构
生物量
碳储量
stand structure
biomass
carbon storage
