[1]张祥宇,包倪雯,刘丽婷,等. 桉树人工林林分结构特征及调控技术研究[J].西北林学院学报,2017,32(4):45-51.[doi:10.3969/j.issn.1001-7461.2017.04.08]
　ZHANG Xiang-yu,BAO Ni-wen,LIU Li-ting,et al. Structural Characteristics and Control Techniques of Eucalyptus Stand[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2017,32(4):45-51.[doi:10.3969/j.issn.1001-7461.2017.04.08]
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 桉树人工林林分结构特征及调控技术研究()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第32卷
期数:
2017年第4期
页码:
45-51
栏目:
出版日期:
2017-07-31

文章信息/Info

Title:
 Structural Characteristics and Control Techniques of Eucalyptus Stand
文章编号:
1001-7461(2017)04-0045-07
作者:
 张祥宇1; 包倪雯1; 刘丽婷2; 莫晓勇1*; 梅嘉仪1; 解懿妮1
 （1.华南农业大学 林学与风景园林学院，广东 广州 510642；2.江西省林业科学院，江西 南昌 330013）
Author(s):
 ZHANG Xiang-yu1; BAO Ni-wen1; LIU Li-ting1; MO Xiao-yong1*; MEI Jia-yi1; XIE Yi-ni1
 （1.College of Forestry and Landscape Architecture,South China Agricultural University,Guangzhou,Guangdong 510642,China; 2.Jiangxi Academy of Forestry,Nanchang,Jiangxi 330032,China）
关键词:
 ; 桉树人工林; 林分结构; 结构调控
Keywords:
Eucalyptus plantation;  stand structure;  structure control
分类号:
S792.39
DOI:
10.3969/j.issn.1001-7461.2017.04.08
文献标志码:
A
摘要:
 以1~5年生LH1无性系桉树人工林为研究对象，运用Normal分布、Weibull分布、Gamma分布、对数正态分布和Logistic分布对直径（树高）分布进行拟合；运用角尺度、混交度和大小比数分析林分空间结构并给出调整策略。结果表明：1）对不同林龄的桉树人工林，Normal分布函数拟合直径分布总体效果较好，Logistic分布函数拟合树高分布总体效果较好；2）1~5年生桉树人工林角尺度均值<0.475，林分呈现均匀分布，林木胸径分化不严重，林分接近中庸状态；1~4年生时林分呈现零度混交，5年生时少数结构单元出现弱度混交；3）在桉树人工林的短周期经营模式中，应在第4年对林分中大小比数取值0和0.25的优势和亚优势单株进行择伐；在以培育大径材为目标的中、长期经营模式中，应在第3年对角尺度取值0、0.25且同时大小比数为0.75或1的劣势或绝对劣势单株进行疏伐，同时伐除不健康林木。
Abstract:
 Taking 1-to 5-year-old Eucalyptus plantations (LH1 clone) as research objectives,the structural characteristics of the stands were analyzed.The distribution of diameter (or tree height) was fitted with Normal,Weibull,Gamma,Log normal and Logistic distribution functions.The spatial structures of the stand were analyzed by using uniform angle index,mingling degree and neighborhood comparison,and the adjustment strategy was given.The results showed that 1) for all the stands with different ages,the overall fitting results of diameter distribution with Normal distribution function and tree height distribution with Logistic distribution function were satisfactory.2) For 1-to 5-year-old stands,the mean value of uniform angle index was less than 0.475,and the distribution was even.The mean value of neighborhood comparison was close to 0.5,which meant that the forest DBH differentiation was not serious,and the state of forest stand was close to the mean distribution.Weak mixing was observed in a few structural units for 5-years-old stands,and zero degree mixing for 1-to 4-year-old stands.3) In the short-term management mode,the stands with uniform angle index of 0 or 0.25 should be selectively cut in the fourth year.In the medium and long-term management mode for harvesting big-diameter wood,the stands with uniform angle index of 0 or 0.25 and neighborhood comparison value of 0.75 or 1 at the same time,should be thinned in the third year.Meanwhile,unhealthy trees should be cut off.

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备注/Memo

备注/Memo:
 收稿日期：2016-11-17修回日期：2016-12-25
基金项目：科技部国家重点研发计划课题“桉树高效培育技术研究”（2016YFD0600505）; 广东省林业科技创新项目“基于林相改造的人工林生态栽培技术研究与示范”（2015KJCX026）。
作者简介：张祥宇，男，硕士研究生，研究方向：人工林经营。E-mail:xiangyu_zh@163.com
*通信作者：莫晓勇，男，教授，研究方向：人工林经营。E-mail:motree@163.com
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