不同结构落叶松天然林生物量及生产力特征  

Characteristics of biomass and productivity in Larix gmelinii natural forests with different stand structures

作　　者：玉宝[1] 张秋良[2] 王立明[3] 乌吉斯古楞[4] 

机构地区：[1]国家林业局管理干部学院,北京102600 [2]内蒙古农业大学林学院,内蒙古呼和浩特010019 [3]中国人民武装警察部队警种指挥学院,北京102202 [4]北京林业大学林学院,北京100083

出　　处：《浙江农林大学学报》2011年第1期52-58,共7页Journal of Zhejiang A&F University

基　　金："十一五"国家林业科技支撑计划项目(2008BADB0B0302)

摘　　要：分析了不同结构落叶松Larix gmelinii天然中龄林的生物量和生产力特征,建立了单株总生物量和干、枝、叶生物量模型。结果表明：①草类＋落叶松林和杜香Ledum palustre＋落叶松林生产力、总生物量及其枝和叶生物量比例均为前者高。总生物量中树干生物量比例为后者高。密度为1 000~3 000株.hm-2,草类＋落叶松林和杜香＋落叶松林生物量及生产力最高分别达55.82 t.hm-2,0.99 t.hm-2.a-1和50.36 t.hm-2,0.83 t.hm-2.a-1。干、枝、叶生物量比例最低分别为79.6%,14.6%,4.8%和83.4%,8.8%,3.6%。②随密度增加,草类＋落叶松林生产力、总生物量及其枝、叶生物量比例均增加,而干生物量比例减小。③随树种组成中落叶松成数的增加,林分生产力、总生物量及其干生物量比例呈增加趋势,而枝、叶生物量比例减小。This study analyzed characteristics of biomass and productivity in Larix gmelinii natural forests with different stand structures,and established models for the total biomass and the biomass of trunks,branches and leaves.Results show that：i） As to the productivity,total biomass and biomass proportion of branches and leaves,the grasses ＋ larch forest is higher than the Ledum palustre ＋ larch forest,while for the ratio of the biomass of trunks in the total biomass,the latter is higher than the former.With a density of 1 000-3 000 plants·hm-2,the highest biomass and productivity of grasses-larch forest and Ledum palustre ＋ larch forest are respectively 55.82 t·hm-2,0.99 t·hm-2·a-1 and 50.36 t·hm-2,0.83 t·hm-2·a-1.The lowest biomass proportion of trunks,branches and leaves in the grasses ＋ larch forest is respectively 79.6%,14.6%,and 4.8%;and 83.4%,8.8%,and 3.6% in the Ledum palustre ＋ larch forest.ii） Along with the increase of density,the productivity,total biomass of the grasses ＋ larch forest as well as its biomass proportion of branches and leaves increase,whereas the biomass of branches decreases.iii） As the quota of larch forest increases in the species composition,the productivity,total biomass and the biomass proportion of trunks of forest stand are tending to increase,whereas the biomass proportion of branches and leaves decreases.[Ch,5 tab.19 ref.]

关 键 词：森林生态学 落叶松 生物量 生物量模型 生产力 林分结构 大兴安岭 

分 类 号：S718.5[农业科学—林学]