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林业资源管理 ›› 2019›› Issue (4): 59-68.doi: 10.13466/j.cnki.lyzygl.2019.04.009

• 科学研究 • 上一篇    下一篇

抚育间伐对湿地松人工林生长及林下植被多样性的影响

董凯丽1(), 张国湘2, 王瑞辉1(), 刘凯丽1, 赵苏亚1, 龚映匀1   

  1. 1.中南林业科技大学,长沙 410004
    2.华容县林业局,湖南 岳阳 414200
  • 收稿日期:2019-06-14 修回日期:2019-07-05 出版日期:2019-08-28 发布日期:2020-10-20
  • 通讯作者: 王瑞辉
  • 作者简介:董凯丽(1993-),女,甘肃天水人,在读硕士,主要从事森林培育方面的研究工作。Email: 1984158114@qq.com
  • 基金资助:
    国家林业局“森林抚育成效监测国家级样地及监测体系建设项目”(2016-28-11);国家林业局“生态工程核查——国家级样地及监测体系建设”(2017-28-12);中南林业科技大学研究生科技创新基金项目(20183003)

Effects of Thinning on the Growth of Pinuse Elliottii Plantation and the Diversity of Its Undergrowth Vegetation

DONG Kaili1(), ZHANG Guoxiang2, WANG Ruihui1(), LIU Kaili1, ZHAO Suya1, GONG Yingyun1   

  1. 1. Central South University of Forestry & Technology,Changsha,Hunan 410004,China
    2. Huarong County Forestry Bureau,Yueyang,Hunan 414200,China
  • Received:2019-06-14 Revised:2019-07-05 Online:2019-08-28 Published:2020-10-20
  • Contact: WANG Ruihui

摘要:

以江西省靖安县8a生湿地松人工林为研究对象,设置对照(C,0%)、轻度间伐(L,15%)、中度间伐(M,35%)、重度间伐(H,55%)4种处理,观测抚育间伐对林木生长和林下植被的影响,结果表明:与C相比,随着间伐强度的增加,林木的径阶分布向右偏移,径阶分布L和M符合正态分布、C和H不符合正态分布;抚育间伐对林木胸径和蓄积的生长有明显的促进作用,胸径年平均生长量C与H和M存在显著差异,蓄积年平均增长量C与H存在显著差异,树高年平均生长量各处理间差异不显著;抚育间伐对林下植被种数的增加和植被层Simpson,Shannon-Wiener和Pielou指数的提高总体上有促进作用,这种促进作用在间伐后的前两年比较明显,后随着时间的延迟逐渐减弱。

关键词: 湿地松, 间伐强度, 林分生长, 林下植被

Abstract:

The study was based on 8a pinus elliottii plantation in Jing'an County,Jiangxi Province,sorting it into four thinning intensities,0%(C),15%(L),35%(M),55%(H).Observing the effects of tending and thinning on tree growth and undergrowth vegetation,the results show:with increasing thinning intensity,the distribution of diameter moves right compared with C.The diameter of L and M obey normal distribution but C and H don’t.Clearly,thinning has promoting effects on rise in both diameter and volume with a major difference in annual average growth of diameter between C and H,M,and the average annual growth of volume of C was significantly different from H,but the difference in average annual growth of height is slight.On the whole,thinning makes the number of undergrowth of plantations increase and improve the vegetation layer index of Simpson,Shannon-Wiener and Pielou,the effect which is relatively remarkable in the first two years after experiment,afterwards is weakened.The research results can provide technical support for the management of Pinus elliottii plantation.

Key words: Pinus elliottii, thinning intensities, stand growth, undergrowth vegetation

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