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抚育采伐对吉林蛟河针阔混交林幼苗更新的影响

米爽 宋子龙 秦江环 孟令君 张春雨 赵秀海 何怀江

米爽, 宋子龙, 秦江环, 孟令君, 张春雨, 赵秀海, 何怀江. 抚育采伐对吉林蛟河针阔混交林幼苗更新的影响[J]. 北京林业大学学报, 2019, 41(5): 159-169. doi: 10.13332/j.1000-1522.20190021
引用本文: 米爽, 宋子龙, 秦江环, 孟令君, 张春雨, 赵秀海, 何怀江. 抚育采伐对吉林蛟河针阔混交林幼苗更新的影响[J]. 北京林业大学学报, 2019, 41(5): 159-169. doi: 10.13332/j.1000-1522.20190021
Mi Shuang, Song Zilong, Qin Jianghuan, Meng Lingjun, Zhang Chunyu, Zhao Xiuhai, He Huaijiang. Effects of tending thinning on seedling regeneration in a mixed conifer-broadleaf forest in Jiaohe, Jilin Province of northeastern China[J]. Journal of Beijing Forestry University, 2019, 41(5): 159-169. doi: 10.13332/j.1000-1522.20190021
Citation: Mi Shuang, Song Zilong, Qin Jianghuan, Meng Lingjun, Zhang Chunyu, Zhao Xiuhai, He Huaijiang. Effects of tending thinning on seedling regeneration in a mixed conifer-broadleaf forest in Jiaohe, Jilin Province of northeastern China[J]. Journal of Beijing Forestry University, 2019, 41(5): 159-169. doi: 10.13332/j.1000-1522.20190021

抚育采伐对吉林蛟河针阔混交林幼苗更新的影响

doi: 10.13332/j.1000-1522.20190021
基金项目: 国家重点研发计划项目(2017YFC0504104、2017YFC050410401),国家自然科学基金项目(31670643),吉林省科技发展计划项目(20180519020JH)
详细信息
    作者简介:

    米爽。主要研究方向:森林生态学。Email:ms19951002@163.com 地址:100083 北京市海淀区清华东路35号北京林业大学林学院

    责任作者:

    赵秀海,教授,博士生导师。主要研究方向:森林经营理论与技术。Email:zhaoxh@bjfu.edu.cn 地址:同上

Effects of tending thinning on seedling regeneration in a mixed conifer-broadleaf forest in Jiaohe, Jilin Province of northeastern China

  • 摘要: 目的探究不同抚育采伐强度下吉林蛟河针阔混交林幼苗更新状况,为进行科学合理的森林经营提供理论依据和科学指导。方法以吉林蛟河4 hm2采伐样地为基础,将100个 2 m × 2 m的幼苗样方中所有乔木树种幼苗作为研究对象,基于2018年7月至9月每月上旬的幼苗监测数据,比较不同采伐强度下样地内幼苗的物种组成、数量特征以及月际动态,采用单因素方差法分析抚育采伐对林下幼苗更新的影响。结果(1)调查期间共监测到幼苗948株,隶属10科12属19种。对照、轻度、中度和重度采伐下样地的物种丰富度分别为8、13、14、16,采伐后样地内幼苗的物种丰富度、辛普森指数、香农−威纳指数和均匀度指数都有显著提高。(2)不同采伐强度下样地内幼苗数量差异较大,轻度采伐样地和重度采伐样地的幼苗数量明显高于对照样地和中度采伐样地。采伐后幼苗不同龄级和高度级上数量的分布趋于均匀,随着采伐强度的增大,较大龄级和较大高度级上幼苗数量的比重逐渐增多。(3)采伐后样地内幼苗死亡率降低,增补率上升。不同采伐强度下幼苗的死亡率和增补率存在较大差异,其中重度采伐样地内幼苗的死亡率较低,轻度和中度采伐样地内幼苗的增补率较高。结论抚育采伐影响了林下幼苗更新。采伐后物种多样性指数显著提高。从林下幼苗更新数量来看,轻度采伐和重度采伐下幼苗更新数量较多。从林下幼苗生长状况来看,重度采伐下幼苗龄级分布和高度级分布更均匀,生长较好。

     

  • 图  1  样方分布示意图

    Figure  1.  Schematic diagram of quadrat distribution in the sample plot

    图  2  不同采伐样地各月幼苗数量

    相同月份不同样地的不同小写字母表示差异显著(P < 0.05)。Different lowercase letters in varied sample plots in each month show significant differences (P < 0.05).

    Figure  2.  Number of seedlings per month in different thinning sample plots

    图  3  不同采伐样地幼苗的苗龄结构

    Figure  3.  Age structure of seedlings in different thinning sample plots

    图  4  不同采伐样地幼苗的高度级结构

    Figure  4.  Height class structure of seedlings in different thinning sample plots

    表  1  样地基本概况表

    Table  1.   Basic survey table of sample land

    采伐类型
    Thinning type
    林分密度/(株·hm− 2
    Stand density/(tree·ha− 1)
    平均胸径
    Mean DBH/cm
    平均树高
    Mean tree height/m
    林分蓄积量/(m3·hm− 2
    Stand volume/(m3·ha− 1)
    郁闭度
    Canopy density
    CK 1 106 14.6 9.7 231.2 0.9
    LT 844 13.8 9.8 194.4 0.8
    MT 726 14.8 9.9 170.1 0.6
    HT 717 12.7 8.9 117.5 0.5
    注:CK为对照,LT为轻度采伐,MT为中度采伐,HT为重度采伐。下同。Notes: CK indicates control, LT indicates light thinning treatment, MT indicates moderate thinning treatment and HT indicates heavy thinning treatment. Same as below.
    下载: 导出CSV

    表  2  采伐样地各月幼苗物种重要值

    Table  2.   Species importance value of seedlings at the thinning sample plots of each month

    物种 Species 对照 CK 轻度采伐 LT 中度采伐 MT 重度采伐 HT
    7月 Jul. 8月 Aug. 9月 Sept. 7月 Jul. 8月 Aug. 9月 Sept. 7月 Jul. 8月 Aug. 9月 Sept. 7月 Jul. 8月 Aug. 9月 Sept.
    白牛槭 Acer mandshuricum 2.74 3.90 4.51 4.68 4.99 5.54 21.09 22.28 24.17 4.56 6.48 4.97
    春榆 Ulmus davidiana var. japonica 0 1.95 0 2.34 5.95 6.40 0 4.05 3.81 0.91 2.07 2.33
    簇毛槭 Acer barbinerve 1.37 1.95 2.25 4.68 3.98 4.15 3.71 1.49 1.61 5.55 2.62 1.80
    旱柳 Salix matsudana 2.25 2.55 1.16
    红松 Pinus koraiensis 5.48 7.80 9.02 4.82 5.04 5.48 7.80 9.49 9.65 3.41 3.86 2.33
    胡桃楸 Juglans mandshurica 4.11 5.85 4.51 0.96 1.01 1.10 2.47 2.99 3.22
    怀槐 Maackia amurensis 0.96 1.01 1.10 1.24 1.49 1.61 3.48 3.93 4.12
    黄檗 Phellodendron amurense 0.96 1.01 1.10 1.24 1.49 1.61 1.41 1.59 2.33
    糠椴 Tilia mandschurica 1.24 0 0
    裂叶榆 Ulmus laciniata 1.62 0 0
    毛榛 Corylus mandshurica 1.93 2.02 2.19 1.16 1.31 1.16
    蒙古栎 Quercus mongolica 1.37 1.95 2.25 3.86 4.03 4.38 1.24 0 0 7.20 6.76 8.25
    柠筋槭 Acer triflorum 2.89 3.03 3.29 1.24 1.49 1.61 2.07 1.31 1.48
    青楷槭 Acer tegmentosum 1.24 1.49 1.61 0.91 1.03 1.16
    青杨 Populus cathayana 0.91 1.03 1.16
    色木槭 Acer mono 14.73 12.74 14.16 13.50 14.20 15.23 14.60 19.19 18.16 11.27 12.75 14.07
    山杨 Populus davidiana 3.13 3.52 3.70
    水曲柳 Fraxinus mandschurica 48.67 61.92 63.30 52.96 51.24 48.67 38.83 33.04 31.34 50.37 47.61 48.18
    紫椴 Tilia amurensis 2.74 1.95 0 5.44 2.50 1.38 2.47 1.49 1.61 1.41 1.59 1.80
    下载: 导出CSV

    表  3  不同样地内更新幼苗物种多样性指数比较

    Table  3.   Comparison of species diversity of regeneration seedlings in different sample plots

    样地
    Sample plot
    辛普森指数 Simpson’s diversity index 香农−威纳指数 Shannon-Weiner index 均匀度指数 Pielou evenness index
    7月 Jul. 8月 Aug. 9月 Sept. 7月 Jul. 8月 Aug. 9月 Sept. 7月 Jul. 8月 Aug. 9月 Sept.
    对照
    CK
    0.203 ± 0.009b 0.213 ± 0.011b 0.149 ± 0.009b 0.333 ± 0.015b 0.294 ± 0.015b 0.236 ± 0.014b 0.401 ± 0.016a 0.352 ± 0.017b 0.286 ± 0.016b
    轻度
    LT
    0.397 ± 0.010a 0.390 ± 0.010a 0.408 ± 0.011a 0.680 ± 0.017a 0.672 ± 0.019a 0.684 ± 0.019a 0.637 ± 0.015a 0.619 ± 0.015a 0.658 ± 0.016a
    中度
    MT
    0.489 ± 0.014a 0.358 ± 0.012a 0.299 ± 0.012a 0.595 ± 0.020a 0.607 ± 0.021a 0.523 ± 0.022a 0.516 ± 0.016a 0.513 ± 0.017a 0.454 ± 0.018a
    重度
    HT
    0.383 ± 0.010a 0.368 ± 0.011a 0.360 ± 0.010a 0.661 ± 0.019a 0.651 ± 0.021a 0.602 ± 0.020a 0.638 ± 0.015a 0.601 ± 0.015a 0.620 ± 0.017a
    注:同列不同小写字母表示差异显著(P < 0.05)。Note: different lowercase letters of the same row show significant differences (P < 0.05).
    下载: 导出CSV

    表  4  样地1年生与多年生幼苗月际动态变化

    Table  4.   Monthly dynamic changes of annual seedlings and perennial seedlings of the sample plots

    样地
    Sample plot
    苗龄
    Seedling age
    7月 Jul. 8月 Aug. 9月 Sept.
    幼苗数
    Seedling number
    新增数
    Added number
    死亡数
    Death number
    死亡率
    Mortality
    rate
    增补率
    Supplement rate
    新增数
    Added number
    死亡数
    Death number
    死亡率
    Mortality
    rate
    增补率
    Supplement rate
    对照
    CK
    1年生
    Annual
    139 9 63 0.604 0.112 0 18 0.238 0
    多年生
    Perennial
    12 0 1 0.087 0 0 0 0 0

    Total
    151 9 64 0.551 0.098 0 18 0.208 0
    轻度采伐
    LT
    1年生
    Annual
    184 38 70 0.479 0.288 6 36 0.270 0.050
    多年生
    Perennial
    58 0 1 0.017 0 0 6 0.111 0

    Total
    242 38 71 0.347 0.201 6 42 0.224 0.035
    中度采伐
    MT
    1年生
    Annual
    82 13 47 0.851 0.316 2 9 0.208 0.050
    多年生
    Perennial
    47 0 1 0.022 0 0 1 0.022 0

    Total
    129 13 48 0.465 0.149 2 10 0.112 0.024
    重度采伐
    HT
    1年生
    Annual
    94 11 26 0.324 0.150 4 19 0.275 0.065
    多年生
    Perennial
    121 0 7 0.060 0 0 8 0.073 0

    Total
    215 11 33 0.167 0.059 4 27 0.151 0.024
    下载: 导出CSV
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出版历程
  • 收稿日期:  2019-01-16
  • 修回日期:  2019-03-01
  • 网络出版日期:  2019-04-30
  • 刊出日期:  2019-05-01

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