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赣南马尾松天然林不同生长阶段碳密度分布特征

郭丽玲 潘萍 欧阳勋志 宁金魁 臧颢 刘苑秋 杨阳 桂亚可

郭丽玲, 潘萍, 欧阳勋志, 宁金魁, 臧颢, 刘苑秋, 杨阳, 桂亚可. 赣南马尾松天然林不同生长阶段碳密度分布特征[J]. 北京林业大学学报, 2018, 40(1): 37-45. doi: 10.13332/j.1000-1522.20170186
引用本文: 郭丽玲, 潘萍, 欧阳勋志, 宁金魁, 臧颢, 刘苑秋, 杨阳, 桂亚可. 赣南马尾松天然林不同生长阶段碳密度分布特征[J]. 北京林业大学学报, 2018, 40(1): 37-45. doi: 10.13332/j.1000-1522.20170186
Guo Li-ling, Pan Ping, Ouyang Xun-zhi, Ning Jin-kui, Zang Hao, Liu Yuan-qiu, Yang Yang, Gui Ya-ke. Distribution characteristics of carbon density of natural Pinus massoniana forest at different stand growing stages in southern Jiangxi Province, eastern China[J]. Journal of Beijing Forestry University, 2018, 40(1): 37-45. doi: 10.13332/j.1000-1522.20170186
Citation: Guo Li-ling, Pan Ping, Ouyang Xun-zhi, Ning Jin-kui, Zang Hao, Liu Yuan-qiu, Yang Yang, Gui Ya-ke. Distribution characteristics of carbon density of natural Pinus massoniana forest at different stand growing stages in southern Jiangxi Province, eastern China[J]. Journal of Beijing Forestry University, 2018, 40(1): 37-45. doi: 10.13332/j.1000-1522.20170186

赣南马尾松天然林不同生长阶段碳密度分布特征

doi: 10.13332/j.1000-1522.20170186
基金项目: 

中国科学院战略性先导科技专题 XDA05050205

国家自然科学基金项目 31360181

详细信息
    作者简介:

    郭丽玲。主要研究方向:森林资源管理与监测。Email:1490780947@qq.com 地址:330045江西省南昌市昌北经济技术开发区志敏大道1101号

    责任作者:

    欧阳勋志,教授,博士生导师。主要研究方向:森林资源管理与监测和森林生态。Email:oyxz_2003@hotmail.com 地址:同上

  • 中图分类号: S718.55+4.2;S791.248

Distribution characteristics of carbon density of natural Pinus massoniana forest at different stand growing stages in southern Jiangxi Province, eastern China

  • 摘要: 目的通过对赣南马尾松天然林碳密度的分析, 为其区域尺度上森林碳储量的准确估算以及开展碳汇林业的科学经营提供参考依据。方法基于标准地调查与碳含量的测定, 采用单因素方差分析和LSD多重比较法, 分析不同林龄、层次及不同组分碳密度的分布特征。结果(1) 林分总碳密度为129.00 t/hm2, 表现为成熟林(185.41 t/hm2)>近熟林(140.54 t/hm2)>中龄林(114.21 t/hm2)>幼龄林(75.83 t/hm2); 各层碳密度为土壤层(80.02 t/hm2)>乔木层(43.81 t/hm2)>林下植被层(4.60 t/hm2)>凋落物层(0.57 t/hm2), 分别占总碳密度的62.03%、33.96%、3.57%和0.44%;每层碳密度的分配规律表现为:乔木层为树干>树枝>树根>树叶, 林下植被为草本层>灌木层, 凋落物为半分解层>未分解层, 土壤各层单位厚度的碳密度随土层深度的增加而逐渐降低。(2)随林龄的增大, 各层碳密度的变化规律不尽相同。其中, 乔木层、土壤层的碳密度均呈增加趋势, 且均以成熟林最大, 成熟林的林木各组分碳密度均显著高于其他龄组(P < 0.05), 而土壤层碳密度在不同龄组间均存在显著差异(P < 0.05);林下植被层碳密度随林龄变化表现出先减后增趋势, 但以幼龄林最大。不同龄组间的灌木层、草本层及其各组分碳密度均有显著差异(P < 0.05), 其中灌木层碳密度以近熟林最大, 草本层碳密度以成熟林最大; 凋落物层碳密度随林龄增大表现为先增后减的趋势, 近熟林未分解层碳密度显著高于其他龄组(P < 0.05), 而半分解层碳密度各龄组间差异不显著(P>0.05)。结论土壤层和乔木层是马尾松天然林整个生态系统碳密度的主体; 随着林龄的增大, 乔木层及其各组分和土壤层的碳密度均呈增加趋势, 而林下植被层、凋落物层及其各组分碳密度的变化并未表现出相同规律。

     

  • 图  1  不同龄组土壤碳密度及土壤10cm厚度的平均碳密度

    不同小写字母代表同一土层不同龄组间差异显著(P < 0.05)。

    Figure  1.  Soil carbon density and average soil carbon density of 10cm thickness of different age groups

    Different lowercase letters mean significant differences among different age groups at same soil level(P < 0.05).

    表  1  不同龄组标准地基本概况

    Table  1.   Basic situation of sample plots at different age groups

    龄组
    Age group
    平均年龄/a
    Average
    age/year
    平均林木密度/
    (株·hm-2)
    Average tree density/
    (tree·ha-1)
    平均胸径
    Average
    DBH/cm
    平均树高
    Average
    height/m
    灌木盖度
    Shrub
    coverage/%
    草本盖度
    Herb
    coverage/%
    郁闭度
    Canopy
    density
    幼龄林Young forest 16 1651 8.3 6.4 5 81 0.5
    中龄林Middle-aged forest 26 1113 11.3 8.9 10 58 0.6
    近熟林Near-mature forest 34 886 15.7 13.5 39 60 0.6
    成熟林Mature forest 46 740 20.8 15.7 11 68 0.7
    下载: 导出CSV

    表  2  不同龄组各层次碳含量

    Table  2.   Carbon content of each layer at different age groups

    g·kg-1
    层次
    Layer
    组分
    Component
    幼龄林
    Young forest
    中龄林
    Middle-aged forest
    近熟林
    Near-mature forest
    成熟林
    Mature forest
    平均值
    Mean
    乔木层
    Arbor layer
    树干Trunk 484.70±34.63 474.62±8.96 481.91±29.33 461.34±10.45 475.64±10.44A
    树枝Branch 461.62±29.57 469.67±16.95 452.81±8.98 463.90±22.80 462.00±7.00A
    树叶Tree leaf 468.89±37.10 497.85±13.14 494.36±13.53 499.86±48.29 490.24±14.41A
    树根Tree root 454.65±45.43 433.70±11.38 452.15±26.70 430.22±13.29 442.68±12.50A
    平均值Mean 467.47±14.23a 468.96±21.25a 470.31±23.77a 463.83±21.67a 467.64±18.54
    灌木层
    Shrub layer
    叶Leaf 440.21±21.13 377.70±49.30 363.69±69.77 426.18±29.54 401.95±36.98A
    枝Branch twig 441.02±35.79 363.93±36.64 389.91±39.53 389.55±56.05 396.10±32.32B
    根Root 422.01±25.06 323.47±35.25 358.91±35.06 366.91±64.59 367.82±40.76C
    平均值Mean 434.41±16.26a 355.03±23.84b 370.84±17.92b 394.21±22.34b 388.62±17.69
    草本层
    Herb layer
    地上Aboveground 462.67±74.29 501.77±26.97 462.96±45.69 430.43±13.07 464.46±29.19A
    地下Underground 357.04±20.52 337.15±17.13 320.70±17.77 344.72±45.37 339.90±15.20B
    平均值Mean 409.86±26.45a 419.46±13.66a 391.83±22.84a 387.58±18.23a 402.18±16.53
    凋落物层
    Litter layer
    半分解层Half-decomposed layer 394.22±17.35 423.41±45.43 386.02±12.12 404.54±18.26 402.05±16.13B
    未分解层Undecomposed layer 453.46±36.25 397.23±16.61 420.17±59.36 405.06±28.85 418.98±24.88A
    平均值Mean 423.84±19.45a 410.32±28.74a 403.10±15.43a 404.80±21.18a 410.51±16.64
    土壤层
    Soil layer
    0~10cm 8.15±3.10 10.47±3.07 12.80±6.55 14.40±4.65 11.46±2.73A
    10~20cm 5.54±2.33 7.55±2.75 8.40±5.44 9.23±2.47 7.68±1.58B
    20~30cm 4.91±3.16 4.92±2.09 6.50±4.47 6.52±0.49 5.71±0.92C
    30~50cm 3.70±2.46 3.89±0.56 5.41±3.19 6.00±0.34 4.75±1.13D
    50~100cm 2.97±3.27 3.04±1.33 4.70±1.65 4.75±2.89 3.86±0.99E
    平均值Mean 5.06±1.34d 5.88±2.14c 7.58±1.94b 8.23±1.67a 6.69±1.26
    注:数值为平均值±标准误。不同大写字母表示相同层次不同组分差异显著(P < 0.05),同一行不同小写字母为差异显著(P < 0.05)。下同。
    Notes:data is mean value ± standard error. Different capital letters show the significant differences among different components with same level(P < 0.05),different lowercase letters in the same line show significant differences(P < 0.05). The same below.
    下载: 导出CSV

    表  3  不同龄组乔木层碳密度     t·hm-2

    Table  3.   Carbon density of arbor layer at different age groups      t·ha-1

    组分
    Component
    幼龄林
    Young forest
    中龄林
    Middle-aged forest
    近熟林
    Near-mature forest
    成熟林
    Mature forest
    平均值
    Mean
    树干Trunk 6.82±5.76c 24.57±17.02b 28.10±3.72b 55.30±27.07a 28.70±19.68
    树枝Branch 1.39±1.07c 5.63±3.98b 6.40±1.22b 12.66±5.62a 6.52±4.60
    树叶Tree leaf 0.83±0.52c 2.77±1.88b 3.00±0.57b 5.44±1.88a 3.01±1.77
    树根Tree root 1.31±0.73c 4.94±3.23b 5.95±1.18b 10.15±3.73a 5.58±3.33
    合计Total 10.35 37.91 43.45 83.55 43.81
    下载: 导出CSV

    表  4  不同龄组林下植被层碳密度     t·hm-2

    Table  4.   Carbon density of understory vegetation layer at different age groups      t·ha-1

    层次
    Layer
    组分
    Component
    幼龄林
    Young forest
    中龄林
    Middle-aged forest
    近熟林
    Near-mature forest
    成熟林
    Mature forest
    平均值
    Mean
    灌木层Shrub layer 叶Leaf 0.24±0.14b 0.19±0.14c 0.43±0.34a 0.15±0.12d 0.25±0.13
    枝Branch twig 0.82±0.17a 0.44±0.34c 0.78±0.58b 0.37±0.36d 0.60±0.18
    根Root 0.37±0.20b 0.41±0.52d 0.86±0.63a 0.36±0.36c 0.50±0.32
    小计Subtotal 1.43b 1.04c 2.07a 0.88d 1.35
    草本层Herb layer 地上Aboveground 2.11±0.48b 2.59±1.04a 1.48±1.41d 1.96±1.26c 2.04±0.46
    地下Underground 1.55±0.81b 0.88±0.39c 0.68±0.74d 1.71±1.03a 1.20±0.50
    小计Subtotal 3.66b 3.47c 2.16d 3.67a 3.24
    合计Total 5.09 4.51 4.23 4.55 4.60
    下载: 导出CSV

    表  5  不同龄组凋落物层碳密度     t·hm-2

    Table  5.   Carbon density of litter layer at different age groups      t·ha-1

    组分
    Component
    幼龄林
    Young forest
    中龄林
    Middle-aged forest
    近熟林
    Near-mature forest
    成熟林
    Mature forest
    平均值
    Mean
    半分解层Half-decomposed layer 0.30±0.12a 0.39±0.14a 0.36±0.25a 0.28±0.07a 0.33±0.05
    未分解层Undecomposed layer 0.20±0.09b 0.21±0.06b 0.34±0.16a 0.21±0.03b 0.24±0.07
    合计Total 0.50 0.59 0.70 0.49 0.57
    下载: 导出CSV

    表  6  林分总碳密度分析     t·hm-2

    Table  6.   Analysis of the total carbon density of forest stand      t·ha-1

    层次
    Layer
    幼龄林
    Young forest
    中龄林
    Middle-aged forest
    近熟林
    Near-mature forest
    成熟林
    Mature forest
    总平均值
    Total mean
    乔木层Arbor layer 10.35d 37.91c 43.45b 83.55a 43.81
    (13.64%) (33.19%) (30.91%) (45.06%) (33.96%)
    林下植被层Understory vegetation layer 5.09a 4.51c 4.23d 4.55b 4.60
    (6.70%) (3.95%) (3.01%) (2.45%) (3.57%)
    凋落物层Litter layer 0.50c 0.59b 0.70a 0.49d 0.57
    (0.66%) (0.52%) (0.50%) (0.26%) (0.44%)
    土壤层Soil layer 59.89d 71.20c 92.16b 96.82a 80.02
    (79.00%) (62.34%) (65.58%) (52.22%) (62.03%)
    合计Total 75.83d 114.21c 140.54b 185.41a 129.00
    注:括号中数据为占林分总碳密度的百分比。Note:date in brackets are percentages of the total carbon density of forest stand.
    下载: 导出CSV
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  • 收稿日期:  2017-05-22
  • 修回日期:  2017-10-16
  • 刊出日期:  2018-01-01

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