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Forest and Grassland Resources Research >

2022 , Vol. 0 >Issue 6: 101 - 108

DOI: https://doi.org/10.13466/j.cnki.lyzygl.2022.06.016

Scientific Research

Relationships Between Biomass Allocation Pattern and Plant Size of Pinus yunnanensis Seedling

  • Yu WANG ,
  • Nianhui CAI ,
  • Lin CHEN ,
  • Junrong TANG ,
  • Yulan XU ,
  • Shi CHEN
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  • 1. Key Laboratory of Biodiversity Conservation in Southwest China,State Forestry Administration,Southwest Forestry University,Kunming 650224,China
    2. Key Laboratory for Forest Resources Conservation and Utilization in the Southwest Mountains of China Southwest Forestry University,Ministry of Education,Kunming 650224,China

Received date: 2022-09-08

  Revised date: 2022-09-22

  Online published: 2023-01-16

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Abstract

In order to analyze the change of biomass distribution characteristics with plant size of Pinus yunnanensis seedling,taking P.yunnanensis seedlings as the object of study,615 2-year-old seedlings of P.yunnanensis were analyzed by full stem harvesting method.According to the determination of organ biomass,biomass allocation pattern and its change with plant size were analyzed.The results showed that concerning the individual plant level,P.yunnanensis seedling biomass was distributed in the following order: leaves biomass percentage (58.13%)>stem biomass percentage (26.31%)>root biomass percentage (15.57%),the photosynthetic organ biomass percentage (58.13%)>the photosynthetic organ biomass percentage (41.87%),above-ground biomass percentage (84.43%)>under-ground biomass percentage (15.57%),indicating that biomass allocation of P.yunnanensis seedling had trade-offs.Biomass allocations of P.yunnanensis seedling had large fluctuations on the individual plant level.The variation coefficient changed from 6.07% to 60.47%.The linear relationships were existed between root,stem and needle,above-ground part,the photosynthetic organ biomass (P<0.01),which could be used for biomass estimation.The biomass allocation of P.yunnanensis seedling changed with the plant size,and the available power function curve fitted well the relationship between them.When seedlings were little size,biomass allocation tended to be part of above-ground part,and distribution of needle biomass was dominated.In general,biomass allocation of P.yunnanensis seedling had trade-offs,and was subject to the influence of plant size.

Key words： Pinus yunnanensis; biomass allocation; growth strategies; plant size

Cite this article

Yu WANG , Nianhui CAI , Lin CHEN , Junrong TANG , Yulan XU , Shi CHEN . Relationships Between Biomass Allocation Pattern and Plant Size of Pinus yunnanensis Seedling[J]. Forest and Grassland Resources Research, 2022 , 0(6) : 101 -108 . DOI: 10.13466/j.cnki.lyzygl.2022.06.016

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