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林业资源管理 ›› 2016›› Issue (1): 72-77.doi: 10.13466/j.cnki.lyzygl.2016.01.013

• 科学研究 • 上一篇    下一篇

抚育间伐对马尾松人工林生产力和生物量的影响

丁波1,2, 丁贵杰1, 李先周1   

  1. 1.贵州大学 林学院,贵阳 550025;
    2.贵州省林业科技推广总站,贵阳 550001
  • 收稿日期:2015-10-27 修回日期:2015-12-04 发布日期:2020-11-04
  • 通讯作者: 丁贵杰(1960-),男,教授,博导,主要从事人工林培育及生态学研究。
  • 作者简介:丁波(1981-),男(仡佬族),贵州凤冈人,高工,在读博士,主要从事人工林培育研究和林业科技推广工作。Email:gs.bding@163.com
  • 基金资助:
    国家十二五科技支撑课题(2015BAD09B0102);贵州省重大专项(黔科合重大专项字[2012]6011号);贵州省林业重大专项(黔林科合[2010]重大03号);贵州省农业科技攻关(黔科合NY字[2012]3027号)

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

DING Bo1,2, DING Guijie1, LI Xianzhou1   

  1. 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:2015-10-27 Revised:2015-12-04 Published:2020-11-04

摘要: 生物生产力是判断生态系统大气中C02源和汇的重要标志,研究间伐对马尾松人工林生产力和生物量变化具有重要作用。采用不同间伐强度对贵州台江县12a生马尾松人工林生产力和生物量影响进行研究。沿等高线随机区组试验设计,设置4种间伐强度,即T00(未间伐(0%),2 016株/hm2),T11(轻度(11%),1 800株/hm2),T22((中度(22%),1 566株/hm2)和T33(强度(33%),1 350株/hm2),利用4年连续监测数据对间伐林分的树高、胸径、单株立木材积、蓄积量、生物量及生产力进行分析与计算。结果表明:不同间伐强度下,T33,T22和T11样地的平均胸胸径、树高和单株立木材积净生长量均大于对照T00样地,间伐4年平均净生产力T11((7 144.26kg/(hm2·a))>T22(6 803.35kg/(hm2·a))>T00(6 743.16kg/(hm2·a))>T33(5 816.09kg/(hm2·a)),但是其生长率均大于T00样地。T22间伐强度下林分胸径和平均单株材积与对照T00达显著水平,且年平均净生产力大于对照T00,马尾松人工林中林龄阶段以T22间伐强度(1 566株/hm2)经营最为合适,提高林分生产力最为有利。

关键词: 间伐, 人工林, 生产力, 生物量, 马尾松

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

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