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Forest and Grassland Resources Research >

2016 , Vol. 0 >Issue 1: 72 - 77

DOI: https://doi.org/10.13466/j.cnki.lyzygl.2016.01.013

Scientific Research

Influence of Tending Thinning on Productivity and Biomass in the Pinus Massoniana Plantation

  • DING Bo ,
  • DING Guijie ,
  • LI Xianzhou
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  • 1. Forestry College of Guizhou University,Guiyang 550025,China;
    2. General Station of Forestry Science and Technology Popularization of Guizhou Province,Guiyang 550001,China

Received date: 2015-10-27

  Revised date: 2015-12-04

  Online published: 2020-11-04

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Abstract

Biological productivity is an important symbol of the CO2 source and sink in the atmosphere of the ecological system.The thinning plays an important role in changes of Productivity and biomass of Pinus massoniana plantation.On the basis of using different thinning intensities in Taijiang county of Guizhou province for twelve years,biomass of Pinus massoniana plantation and productivity effects were studied.Camp contour design randomized block experiment was made,four kinds of thinning intensity set up,namely T00 [not thinning(0%),2016 strains/hm2],T11 [mild(11%),1800 strains/hm2],T22 [(moderate(22%),1566strains/hm2]and T33 [strength(33%),1350strains/ hm2),through the continuous monitoring data of thinning in four years tree height of forest stand(diameter at breast height,stocking,volume and biomass and productivity per plant)is measured and calculated.The results show that the different thinning intensity,the sample average of T33,T22 and T11 chest diameter at breast height,tree height and individual stocking net increment were greater than contrast T00 sample,thinning four year average net productivity T11(7 144.26 kg/(hm2·a))>T22(6 803.35 kg/(hm2·a))>T00(6 743.16 kg/(hm2·a))>T33(5 816.09kg/(hm2·a)),but its growth rate was greater than T00 sample area.T22 thinning intensity stand average DBH and individual volume and contrast T00 reached a significant level,and the annual average net productivity is greater than the contrast T00,Pinus massoniana artificial forest plantation age stage to T22 thinning intensity(1 566 strains/ hm-2)management is the most suitable,most favorable to improving forest productivity.

Key words： thinning; plantation; productivity; biomass; Pinus massoniana

Cite this article

DING Bo , DING Guijie , LI Xianzhou . Influence of Tending Thinning on Productivity and Biomass in the Pinus Massoniana Plantation[J]. Forest and Grassland Resources Research, 2016 , 0(1) : 72 -77 . DOI: 10.13466/j.cnki.lyzygl.2016.01.013

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