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云南松不同家系苗木生物量分配及其异速生长
引用本文:李亚麒,孙继伟,李江飞,王丹,陈诗,许玉兰,蔡年辉. 云南松不同家系苗木生物量分配及其异速生长[J]. 北京林业大学学报, 2021, 43(8): 18-28. DOI: 10.12171/j.1000-1522.20200142
作者姓名:李亚麒  孙继伟  李江飞  王丹  陈诗  许玉兰  蔡年辉
作者单位:西南林业大学林学院,西南山地森林资源保育与利用教育部重点实验室,云南 昆明 650224;西南林业大学林学院,云南省高校林木遗传改良与繁育重点实验室,云南 昆明 650224;西南林业大学林学院,西南山地森林资源保育与利用教育部重点实验室,云南 昆明 650224;西南林业大学林学院,云南省高校林木遗传改良与繁育重点实验室,云南 昆明 650224
基金项目:国家自然科学基金项目(31860203、31760204),云南省教育厅科学研究基金项目(2019Y0124)
摘    要:【目的】旨在探明不同家系云南松苗木器官生物量分配格局及其异速生长现象,了解苗木的个体发育规律及适应策略。【方法】对10个家系310株云南松苗木的生长及生物量相关指标进行调查,利用单因素方差分析比较不同家系苗木的生物量及其分配差异,并采用标准化主轴分析法对其异速生长关系进行分析。【结果】(1)不同家系苗木生物量的积累与分配存在差异,但各器官生物量的分配均表现为叶>茎>根。苗木个体越小,叶生物量占比越大,随着个体大小的增加,倾向于将更多的生物量分配到茎。(2)苗木器官生物量间及器官生物量与个体大小间的异速生长关系在不同家系中不尽相同,总体表现为等速生长。(3)地上生物量与根生物量间及茎生物量与根生物量间具有共同的异速生长指数,分别为1.054和1.209。不同家系苗木既存在等速生长又具有异速生长现象,异速生长关系并不一致。【结论】异速生长关系在不同的家系中并不唯一,既有趋同适应又存在差异,反应了苗木的生长与适应策略。

关 键 词:云南松  生物量分配  异速生长
收稿时间:2020-05-10

Biomass allocation and its allometric growth of Pinus yunnanensis seedlings of different families
Li Yaqi,Sun Jiwei,Li Jiangfei,Wang Dan,Chen Shi,Xu Yulan,Cai Nianhui. Biomass allocation and its allometric growth of Pinus yunnanensis seedlings of different families[J]. Journal of Beijing Forestry University, 2021, 43(8): 18-28. DOI: 10.12171/j.1000-1522.20200142
Authors:Li Yaqi  Sun Jiwei  Li Jiangfei  Wang Dan  Chen Shi  Xu Yulan  Cai Nianhui
Affiliation:1.College of Forestry, Key Laboratory for Forest Resources Conservation and Utilization in the Southwest Mountains of China, Southwest Forestry University, Kunming 650224, Yunnan, China2.College of Forestry, Key Laboratory for Forest Genetic and Tree Improvement & Propagation in Universities of Yunnan Province, Southwest Forestry University, Kunming 650224, Yunnan, China
Abstract:  Objective  This paper aims to reveal the biomass allocation and allometric relationships from different families, and to analyze their ontogenetic law and adaptive strategy of seedlings.  Method  The growth and biomass indexes of 310 Pinus yunnanensis seedlings from 10 families were investigated. One-way ANOVA was used to compare the differences in biomass and biomass allocation of seedlings from different families, and the allometric relationship was analyzed by standardized major axis analysis.  Result  (1) The biomass accumulation and allocation were different among varied families, the biomass allocation in each organ was ordered by leaf > stem > root, the biomass allocation of seedlings was constrained by its individual size, and the smaller the individual size was, the larger the leaf biomass ratio was, while the larger the individual size was, the more the stem biomass ratio was. (2) The allometric growth relationships within the plant organ biomass and organ biomass to individual size were quite discrepant, but the growth relationships were isometric overall. (3) The biomass pair aboveground and root biomass, stem and root biomass of seedlings exhibited a common allometric scaling exponent index of 1.054 and 1.209, respectively. The seedlings of different families had both isometric and allometric relationships.  Conclusion  There is no consistency allometric growth relationship among different families, but it represents the growth and adaptation strategies of seedlings. 
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