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Forest and Grassland Resources Research >

2025 , Vol. 0 >Issue 3: 75 - 82

DOI: https://doi.org/10.13466/j.cnki.lczyyj.2025.03.009

Research paper

Effect of tending management measures on the growth of near-mature forest stand of chinese fir

  • Yagui JIANG ,
  • Ruihui WANG ,
  • Kaili LIU ,
  • Bin ZHANG ,
  • Zenan JIAO ,
  • Yuqian LIU ,
  • Tao ZOU
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  • 1. College of Forestry,Central South University of Forestry and Technology,Changsha 410004,China
    2. National Long-term Scientific Research Base for Forestry in Mid-subtropics,Changsha 410004,China

Received date: 2024-12-11

  Revised date: 2025-04-28

  Online published: 2026-01-07

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Abstract

Through tending management measures test with different thinning intensities and replanting in near-mature forest stands of Chinese fir,breaking through the requirements of the current technical regulations for forest tending,we studied the growth effect rule of different tending measures in near-mature Chinese fir forests,so as to optimize the stand structure transformation and promote full-cycle forest management and large diameter class timber cultivation of Chinese fir plantation forest.With a 21-year-old pure Chinese fir plantation as the research object,four treatments of 0%(CK),20%(T1),30%(T2)and 40%(T3)were set according to the thinning intensity on the basis of the number of trees combined with the replanting of broad-leaved tree species.Each treatment was repeated by three times to observe the growth of Chinese fir and replanted tree species under different treatments.The results indicate that,during five years after tending management measures,all of the average annual growth amounts of the DBH and tree height of Chinese fir,as well as the average annual growth amounts of individual tree volume and growing stock volume per unit area,show the order of T3>T2>T1>CK and the differences among the treatments are significant(P<0.05).Meanwhile,with the increase of the thinning intensity,the distribution curve of the number of trees in each diameter class of the Chinese fir forest stand shifted towards the larger diameter classes.For the replanted tree species including Ormosia henryi,Phoebe bournei,and Cyclobalanopsis glauca,the average ground diameter,average tree height,and the average annual growth amounts of ground diameter and tree height all show the order of T3>T2>T1>CK,and the differences among the treatments are significant(P<0.05).The growth of the nearly mature Chinese fir forest with high-intensity tending felling(felling intensity of 40%,retained density of 720 ind.hm2,and retained canopy density of 0.5)is the best.Among the three supplementary planted tree species,Ormosia henryi shows the best growth performance.

Key words： structural transformation of forest stand; full-cycle forest management; tree growth; diameter order distribution; near-mature forest of Chinese fir

Cite this article

Yagui JIANG , Ruihui WANG , Kaili LIU , Bin ZHANG , Zenan JIAO , Yuqian LIU , Tao ZOU . Effect of tending management measures on the growth of near-mature forest stand of chinese fir[J]. Forest and Grassland Resources Research, 2025 , 0(3) : 75 -82 . DOI: 10.13466/j.cnki.lczyyj.2025.03.009

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