[1]常陈豪,吕康婷,周梦丽,等. 间伐对黄山松人工林林分空间结构及稳定性的影响[J].西北林学院学报,2022,37(6):138-144.[doi:10.3969/j.issn.1001-7461.2022.06.19]
　CHANG Chen-hao,LV Kang-ting,ZHOU Meng-li,et al. Effects of Thinning on the Spatial Structure and Stability of Pinus taiwanensis Plantations[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2022,37(6):138-144.[doi:10.3969/j.issn.1001-7461.2022.06.19]
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 间伐对黄山松人工林林分空间结构及稳定性的影响()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第37卷
期数:
2022年第6期
页码:
138-144
栏目:
出版日期:
2022-11-30

文章信息/Info

Title:
 Effects of Thinning on the Spatial Structure and Stability of Pinus taiwanensis Plantations
文章编号:
1001-7461(2022)06-0138-07
作者:
 常陈豪1; 吕康婷1; 周梦丽1; 陈晓蔚2; 郑天才3; 闫东锋1*
 （1.河南农业大学 林学院，河南 郑州 450002；2.河南省林业产业发展中心，河南 郑州 450003；3.河南省国有商城黄柏山林场，河南 商城 465350）
Author(s):
 CHANG Chen-hao1; LV Kang-ting1; ZHOU Meng-li1; CHEN Xiao-wei2; ZHENG Tian-cai3; YAN Dong-feng1*
 (1.College of Forestry,Henan Agricultural University,Zhengzhou 450002,Henan,China; 2.Forestry Industry Development Center,Zhengzhou 450003,Henan,China; 3.State-owed Huangbaishan Forest Form of Shangcheng,Shangcheng 465350,Henan,China)
关键词:
 ; 间伐强度; 林分空间结构; 林分状态; π值法则; 稳定性
Keywords:
 ; thinning intensity;  stand spatial structure;  stand status;  rule of π value;  stability
分类号:
S753
DOI:
10.3969/j.issn.1001-7461.2022.06.19
文献标志码:
A
摘要:
 分析比较不同间伐强度对黄山松人工林林分空间结构以及林分状态的影响，旨在为黄山松人工林的科学经营提供一定的理论基础。以信阳市商城县黄柏山林场40年生黄山松人工林为研究对象，在弱度间伐、中度间伐和重度间伐前后的林分内各设置4块20 m×30 m的固定样地并对其进行样地调查，蓄积强度分别为16.5%、30.4%和48.8%。用混交度、角尺度和大小比数3个林分空间结构参数描述林分空间结构，用最优林分状态的π值法则评价林分稳定性。结果表明，间伐直接改变了林分树种混交度，其中，重度间伐影响最大，而弱度间伐影响最小；重度间伐使林分的水平空间分布格局介于随机分布与均匀分布之间，而其他间伐强度没有改变林木的水平空间分布状态；间伐对林分中林木的大小分化程度影响较小，间伐后的林分仍处于中庸状态；弱度、中度和重度间伐分别使林分的现实林分状态值（ω）提升了3.5%、21.3%和6.7%，其中中度间伐的林分的ω由0.394增加到0.478，其林分状态由较差变为一般，林分稳定性明显增强；弱度、重度间伐的林分的ω提升幅度较小，林分状态仍处于一般状态。中度间伐改善了林分空间结构和林分稳定性，为最适宜的间伐强度。
Abstract:
 To analyze and compare the effects of different thinning intensities on the spatial structure and stand status of Pinus taiwanensis plantations to provide a certain theoretical basis for the scientific management of P.taiwanensis plantations.Taking the 40-year-old P.taiwanensis plantation in Huangbaishan Forest Farm,Shangcheng County,Xinyang City as the research object,four fixed plots with an area of 20 m×30 m each were set up in the stand that underwent thinning management with different intensities:light thinning (16.5%),moderate thinning (30.4%) and heavy thinning (48.8%).The plots were investigated before and after thinning.The spatial structure of the stand was described by three parameters of stand spatial structure:mixed degree,uniform angel index and neighborhood comparison,and stand stability was evaluated by the rule of π value method of optimal stand state.Thinning management directly changed the mixed degree of stand tree species.Among them,heavy thinning had the greatest impact,while light thinning had the least impact.Heavy thinning made the horizontal spatial distribution pattern of the stand between random distribution and uniform distribution,while other thinning intensities did not change the horizontal spatial distribution status of the stand.Thinning had little effect on the size differentiation of the trees in the stand,and the stand after thinning was still in a moderate state.Light,moderate and heavy thinning respectively increased ω values by 3.5%,21.3% and 6.7%,the ω value of the moderately thinned stands increased from 0.394 to 0.478,stand status changed from poor to general,and the stability of the forest was significantly enhanced.Lightly and heavily thinned stands had a small increase in ω value,the state of the forest was still in a general state.Moderate thinning could improve the spatial structure of the stand and enhance the stability of the stand.

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备注/Memo

备注/Memo:
 收稿日期：2021-11-02修回日期：2022-01-11
基金项目：河南省重大公益专项(201300111400)；河南省科技攻关项目(222102110418)。
第一作者：常陈豪。研究方向：森林资源经营与管理。E-mail:2315852251@qq.com
*通信作者：闫东锋，博士，教授。研究方向：森林资源经营与管理和数量生态学。E-mail:ydflx@henau.edu.cn
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