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华北落叶松人工幼林林分密度与生物量的关系

标题: 华北落叶松人工幼林林分密度与生物量的关系
英文标题: RELATIONS OF STAND DENSITY AND THE BIOMASS OF THE ARTIFICIAL YOUNG LARIX PRINCIPIS- RUPPRECHTII FOREST
作者: 李兵兵,剪文灏,秦琰,张玉珍,王志彬
英文作者: LI BING-BING,JIAN WEN-HAO,QIN YAN,ZHANG YU-ZHEN,WANG ZHI-BIN
出版时间: 2009-01-01
机构: 河北农业大学
关键词: 华北落叶松,人工林,林分密度,生物量
英文关键词: LARIX PRINCIPIS-RUPPRECHTII MAYR.,ARTIFICIAL FOREST,STAND DENSITY,BIOMASS
刊名: 河北林果研究
英文刊名: HEBEI JOURNAL OF FORESTRY AND ORCHARD RESEARCH
ISSN: 1007-4961
卷号: 003
基金: ^A国家科技支撑计划项目^B2006BAD24806^D1
页码: 244-247
分类号: S791.22
摘要: 华北落叶松(LARIX PRINCIPIS-RUPPRECHTII MAYR.)是燕山山地的主要树种,生态和经济效益显著.以河北木兰林管局境内13 A生华北落叶松人工幼林为研究对象,用样方调查的方法对立地条件相同密度分别为1 800、2 400和3 000株/HM2的3种林分生物量进行研究,结果表明:林分总生物量随密度的增大而增大,低、中、高3种密度林分总生物量分别为21 180.6、26 724.6和31 352.4 KG/HM2;乔木层生物量最大,占总生物量的98.9%,草本层次之,占0.7%,灌木层最少,仅占0.4%;林木平均木生物量随密度的增大略微减少,密度由低到高其平均木生物量依次为11 537.5、11 077.3和10 357.8 G/株;各密度林分乔木层各器官生物量均存在W干>W枝>W根>W叶>W皮的分布规律;3种密度的林分生物量结构特征基本相同,3 000株/HM2的林分结构合理,更能达到丰产的目的.
英文摘要: Larix principis-rupprechtii Mayr. is the main species in the Yanshan Mountain area,and it has prominent effect in ecology and economy. The paper used the 13 year-old young plantations of Prince Rupprecht'' s Larch in the area of Mulan Forestry Bureau of Hebei. The method of sampling was used for the stand biomass research among the three densities as 1 800,2 400,3 000 trees/hm2 ,but in the same conditions.The result indicated: The total stand biomass increased with the increasing density.The stand total biomass with the three densities of low, middle,high,are 21 180.6,26 724.6,31 352.4 kg/hm2 .The tree layer biomass is the largest, 98.9%on the total biomass, then Herb layer, just 0.7%, while the shrub layer is the lowest, only 0.4%. The average wood biomass of stands decreased slightly with the increasing density. The average wood biomass of stands are 11 537.5,11 077.3 and 10 357.8 g/tree in turn with the density from low to high. The organ biomasses of tree layer with every densities, has the distributing rule of Wtrunk > Wbranch > Wroot > Wieave > Wskin.The stands biomass of the three densities has the same structure character basically. The stands structure of 3 000 trees/hm2 is reasonable, and it also can meet the purpose of fertility.