文献类型：期刊文献

中文题名：辽东山区落叶松-水曲柳混交林及其纯林生长与生物量分配特征

英文题名：Growth and Biomass Allocation of Mixed Larch-Ash Forest and Its Pure Stand in the Eastern Mountainous Area of Liaoning Province

作者：冯健[1] 高慧淋[2] 王骞春[1] 曹颖[3] 卜鹏图[1] 王占伟[1] 陈东升[4]

第一作者：冯健

机构：[1]辽宁省林业科学研究院,沈阳110032;[2]沈阳农业大学;[3]辽宁省林业发展服务中心;[4]中国林业科学研究院林业研究所

年份：2021

卷号：49

期号：7

起止页码：22-27

中文期刊名：东北林业大学学报

外文期刊名：Journal of Northeast Forestry University

收录：CSTPCD;;北大核心:【北大核心2020】；CSCD:【CSCD_E2021_2022】；

基金：“十三五”国家重点研发计划(2017YFD0600401);辽宁省农科院学科建设计划(2019EDD217032);辽宁省农科院学科交流计划(2020HZ217005)。

语种：中文

中文关键词：落叶松-水曲柳混交林;树高;胸径;生物量

外文关键词：Larch-Ash mixed forest;Height of tree;DBH;Biomass

分类号：S725.71

摘要：分析落叶松(Larix spp.)纯林和落叶松-水曲柳(Fraxinus mandshurica Rupr.)混交林林木生长和生物量分配特征,旨在探究混交林与纯林在生长和生物量分配上的差异。以24~28年生落叶松-水曲柳混交林、落叶松纯林和水曲柳纯林为研究对象,对胸径、树高、材积等生长指标和树干、枝、叶、根生物量占总生物量的比例等生物量指标进行测定和分析。结果表明:混交林中落叶松、水曲柳树高分别比纯林树高增加2.06%和2.79%,促进了树高生长;枝下高占树高比例分别比纯林提高5.55%和2.01%,增加了枝下高的高度,但差异均不显著;林分蓄积介于落叶松纯林和水曲柳纯林之间。不同林型各树种不同组分生物量占总生物量的比由大到小均为树干生物量、根生物量、枝生物量、叶生物量,地上生物量与地下生物量比、树干生物量与总生物量的比表现为混交林大于纯林;m(叶生物量)∶m(总生物量)、m(根生物量)∶m(总生物量)表现则相反。林分生长指标与生物量指标,生物量指标与植被多样性指标间均有较强的相关性。落叶松-水曲柳混交林在一定程度上促进了树高生长、加速了自然整枝,提高了树木圆满度,复层林结构明显。落叶松-水曲柳混交林在林分生长和生物量分配比例上优于纯林,这种针阔混交模式可用于辽东山区培育用材林。
The characteristics of growth and biomass distribution of larch pure stand and larch-ash mixed stand were analyzed to study the differences between mixed stand and pure stand in growth and biomass distribution. The larch-ash mixed stand, larch pure stand and ash pure stand of 24-28 a were taken as study objects, the growth indexes such as DBH, tree height, volume, the ratio of biomass in stem, branch, leaf, root to total biomass were measured and analyzed. Compared with larch and ash pure stands, the height of larch and ash in mixed stand increase by 2.06% and 2.79%, respectively. Theratios of height under branch to tree height in mixed stand are 5.55% and 2.01% higher than that in pure stand. The volume of larch-ash mixed stand is between larch pure stand and ash pure stand. The proportion of different biomass in total biomass in different stand types in descending order is dry biomass, root biomass, branch biomass and leaf biomass. The ratio of aboveground biomass/underground biomass and stem biomass/total biomass show that mixed forest is larger than pure forest;leaf biomass/total biomass and root biomass/total biomass show that pure forest is larger than mixed forest. The correlation analysis shows that there are strong correlations between stand growth index and biomass index, growth index and soil nutrient index, biomass index and vegetation diversity index. Larch-ash mixed stand can promote tree height growth, accelerate natural pruning, and improve round degree with obvious multi-storied forest is. Larch-ash mixed stand is superior to pure forest in stand growth and biomass distribution ratio. This coniferous and broad-leaved mixing model can be used to cultivate timber forest in the eastern mountainous area of Liaoning Province.