文献类型：期刊文献

中文题名：南亚热带4种人工林生物量及其分配格局

英文题名：Biomass and its distribution pattern in four subtropical plantation ecosystems

作者：卢立华[1,2] 李华[1,2] 农友[1,2] 陈琳[1,2] 雷丽群[1,2] 刘士玲[1,2] 明安刚[1,2] 郑路[1,2] 陈文军[3]

第一作者：卢立华

机构：[1]中国林业科学研究院热带林业实验中心,广西凭祥532600;[2]广西友谊关森林生态系统国家定位观测研究站,广西凭祥532600;[3]广西国有七坡林场,广西南宁530225

年份：2020

卷号：40

期号：8

起止页码：91-98

中文期刊名：中南林业科技大学学报

外文期刊名：Journal of Central South University of Forestry & Technology

收录：CSTPCD;;北大核心:【北大核心2017】；CSCD:【CSCD2019_2020】；

基金：广西创新驱动发展专项资金项目(桂AA17204087-11);“十三五”国家重点研发计划子课题(2016YFD0600602-1)。

语种：中文

中文关键词：西南桦;生物量;分配;灰木莲;米老排;马尾松

外文关键词：Betula alnoides;biomass;distribution;Magnoliaceae glance;Mytilaria laosensis;Pinus massoniana

分类号：S791.248

摘要：【目的】研究相同立地不同树种人工纯林生物量及其分配格局,为建设高产及高碳汇人工林的树种选择提供依据。【方法】采用随机区组设计,在广西凭祥市同一坡面和坡位的林分中,研究了16年生马尾松、米老排、灰木莲、西南桦人工纯林的生物量及其分配格局。【结果】乔木层生物量、器官分配量、生态系统生物量及其各层次分配量树种间差异显著(P<0.05)。乔木层生物量和生态系统生物量以西南桦>米老排>灰木莲>马尾松;乔木层生物量在器官的分配量,干、皮、枝、叶均以西南桦最高,根以米老排最高;生态系统生物量在各层次的分配量,西南桦以乔木层>灌木层>凋落物层>草本层,其它3个树种都以乔木层>凋落物层>灌木层>草本层。乔木层生物量在器官的分配量排序,马尾松为干>皮>根>枝>叶;米老排和灰木莲为干>根>皮>枝>叶;西南桦为干>皮>枝>根>叶。灌木层和草本层生物量都以地上部显著高于地下部。【结论】乔木层和生态系统生物量及分配格局树种间差异显著,乔木层和生态系统生物量都以西南桦>米老排>灰木莲>马尾松;乔木层生物量占生态系统生物量的91.24%~98.42%,其它层次仅占1.58%~8.76%。选择乔木层生物量高的树种造林能获得更高的林分生产力及碳汇能力。
【Objective】To provide a theoretical guidance for the tree species selection of high yield and carbon-sink plantations, we studied the biomass and distribution patterns of different pure plantations in the same site.【Method】 Using a randomized block design, the biomass and its distribution patterns of 16-year-oldpure plantationswith the same slope direction and position were studied in Pingxiang city, Guangxi. The plantations were Pinus massoniana, Mytilaria laosensis, Magnoliaceae glance, and Betula alnoides, respectively.【Result】There were significant differences among tree species in the tree biomass, organ allocation, ecosystem biomass and its distribution(P < 0.05).The biomass of tree and ecosystem were both the highest in Betula alnoides, followed by Mytilaria laosensis, Magnoliaceae glance and Pinus massoniana. For the distribution pattern in tree biomass, Betula alnoides had the highest biomass of stem, bark,branches and leaves, while Mytilaria laosensisshowed the largest root biomass. For the distribution of ecosystem biomass, they were ranked with following order,tree layer > shrub layer > litter layer > herb layer in Betula alnoides, while tree layer > litter layer > shrub layer > herb layer in other tree species. The biomass distribution in tree organs varied with tree species, for example, stem > bark > root > branch > leaf in Pinus massoniana, stem > root > bark > branch > leaf in Mytilaria laosensis and Magnoliaceae glance, while stem > bark > branch > root > leaf in Betula alnoides. In addition, the shrub and herb biomass were both higher in the above-ground than in the below-ground.【Conclusion】The biomass of tree and ecosystem were significantly different among tree species, with Betula alnoides > Mytilaria laosensis > Magnoliaceae glance > Pinus massoniana. Tree biomass accounted for 91.24%-98.42% of the ecosystem biomass, while the other layers only accounted for 1.58%-8.76%. Tree species with high biomass in the tree layer should be selected to achieve higher forest productivity and carbon sink capacity.