西北林学院学报2024，Vol.39Issue(2)：196-202,7.DOI:10.3969/j.issn.1001-7461.2024.02.25
不同萌枝类型云南红豆杉幼树生物量分配及其异速生长
Biomass Allocation and Allometry of Taxus yunnanensis Saplings from Different Sprout Types
摘要
Abstract
The biomass allocation pattern and allometric relationships of Taxus yunnanensis saplings from different sprout types were studied to understand the ontogenyetic law and adaptive strategy of the sap-lings.Four-year-old sprout saplings of T.yunnanensis growing in Minxi of Fujian Province were divided in-to 3 types based on the sprout relative height.Differences in saplings biomass and biomass allocation a-mong different sprout types were investigated and analyzed.The allometric relationship was analyzed by standardized major axis analysis,and the ontogenetic law and adaptive strategy of T.yunnanensis saplings with different sprout types were revealed.The results showed that there existed significant differences in biomass and its allocation among different types,the biomass allocation in each organ was in the order of branch and leaf＞stem and root,and the aboveground part＞underground part.The highest biomass of each organ,total biomass and the highest biomass allocation ratio of stem appeared in the low type.The allomet-ric growths relationship within organ biomass and organ biomass to individual size of the saplings among different sprout types were quite discrepant.The same allometric scaling exponent index was found be-tween root biomass&stem biomass,root biomass,stem biomass&individual size of the samplings with dif-ferent types.The saplings of different types had both isometric and allometric relationships.It is concluded that there are significant differences in biomass and its allocation among different sprout types of T.yun-nanensis saplings,indicating the existence of abundant genetic variations.Differences of organ biomass allo-cation among different sprout types are the results of the joint effects of allometric growth among organs,organs and branches,and individual size difference.There is no consistency allometric growth relationship among different sprout types,it represents the growth and adaptation strategies of the saplings with differ-ent sprout types.It is suggested that low type should be adopted to develop the T.yunnanensis raw materi-al forest.关键词
云南红豆杉/生物量分配/异速生长/萌枝/类型Key words
Taxus yunnanensis/biomass allocation/allometry/sprouts/type分类
农业科技引用本文复制引用
欧建德,欧家琳,康永武..不同萌枝类型云南红豆杉幼树生物量分配及其异速生长[J].西北林学院学报,2024,39(2):196-202,7.基金项目
国家小微企业双创城市示范项目(2017(72)号) （2017(72）
2023年度福建省省级科技特派员项目 （）
三明市2022年科技特派员后补助项目 （）
三明市2022年度专家"一带一"科研资助经费项目. （）
