辽东山区不同林龄落叶松林分林木各器官生物量分配特征

以辽东山区落叶松人工林为研究对象,采用样地调查和实测生物量等方法,测定落叶松幼龄林、中龄林和近熟林的生物量及其在一个年龄序列上的空间分配特征。结果表明:不同林龄落叶松林分生物量分布依次为中龄林(119.39t·hm~(-2))近熟林(94.69t·hm~(-2))幼龄林(31.44t·hm~(-2))。各器官生物量大小关系略有差异,中龄林和近熟林为树干树根树枝树叶;而幼龄林为树干树枝树根树皮树叶。落叶松人工林经营应定期采取抚育间伐,改善林木生长条件,提高落叶松人工林的生产力,以实现生态系统健康、稳定发展。

Biomass and Spatial Distribution Characteristics of Larix olgensis at Different Stand Age in Mountain of Eastern Liaoning Province

Taking Larix olgensis plantation in eastern Liaoning Province as research objects,adopting method of sample plot inventory & observation biomass,biomass quantity of young forest,half-mature forest & near-mature forest of Larix olgensis and space distribution characteristics at an age sequence were determined.Result shows that the order of the spatial distribution of biomass of Larix olgensis is: half-mature forest (119.39 t hm-2)> near-mature forest (94.69 t hm-2)> young forest (31.44 t hm-2).There are some differences in the biomass of different organs;the descending order of the biomass of the middle-aged and near-mature forest is: trunk> root> branch> leaf,and the descending order of the biamass of the young tree is: trunk> branch> root> bark> leaf.Larix olgensis plantation management should be taken regularly tending thinning,improve the growth of forest conditions,improve productivity of Larix olgensis plantation,and realize health,stable development of ecosystem.