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水曲柳人工林树木叶片营养元素及其化学计量特征的季节动态

王树力 郝玉琢 周磊 吴慧

王树力, 郝玉琢, 周磊, 吴慧. 水曲柳人工林树木叶片营养元素及其化学计量特征的季节动态[J]. 北京林业大学学报, 2018, 40(10): 24-33. doi: 10.13332/j.1000-1522.20180170
引用本文: 王树力, 郝玉琢, 周磊, 吴慧. 水曲柳人工林树木叶片营养元素及其化学计量特征的季节动态[J]. 北京林业大学学报, 2018, 40(10): 24-33. doi: 10.13332/j.1000-1522.20180170
Wang Shuli, Hao Yuzhuo, Zhou Lei, Wu Hui. Seasonal variations of leaf nutrient element concentrations and their stoichiometric characteristics in Fraxinus mandshurica plantations[J]. Journal of Beijing Forestry University, 2018, 40(10): 24-33. doi: 10.13332/j.1000-1522.20180170
Citation: Wang Shuli, Hao Yuzhuo, Zhou Lei, Wu Hui. Seasonal variations of leaf nutrient element concentrations and their stoichiometric characteristics in Fraxinus mandshurica plantations[J]. Journal of Beijing Forestry University, 2018, 40(10): 24-33. doi: 10.13332/j.1000-1522.20180170

水曲柳人工林树木叶片营养元素及其化学计量特征的季节动态

doi: 10.13332/j.1000-1522.20180170
基金项目: 

国家重点研发计划项目 2017YFD0601103

黑龙江省省级财政林业科研专项 201522

详细信息
    作者简介:

    王树力,教授,博士生导师。主要研究方向:生态学、水土保持及荒漠化防治。Email:shuliwang@163.com 地址:150040 黑龙江省哈尔滨市香坊区和兴路26号东北林业大学林学院

  • 中图分类号: S718.43

Seasonal variations of leaf nutrient element concentrations and their stoichiometric characteristics in Fraxinus mandshurica plantations

  • 摘要: 目的探究水曲柳及其混交树种长白落叶松、红皮云杉、红松叶片C、N、P含量及其化学计量特征的季节动态,为水曲柳人工林的优化经营提供理论依据。方法以东北林业大学森林培育实验站天然林窄带状皆伐后营造的29年生水曲柳纯林、水曲柳长白落叶松混交林、水曲柳红皮云杉混交林和水曲柳红松混交林为对象,利用野外取样调查与室内实验分析相结合的方法,分析水曲柳人工林叶片C、N、P含量及其化学计量特征的季节变化。结果(1) 生长季内水曲柳叶片C、N、P含量的总体变化趋势是逐渐降低,变化范围为556.71~446.15g/kg、32.61~18.74g/kg、3.62~1.26g/kg;C/N、C/P、N/P的总体变化趋势是逐渐升高,变化范围为17.06~23.81、150.60~350.56、9.10~16.98。(2)混交树种长白落叶松、红皮云杉和红松叶片C含量及红皮云杉与红松叶片N、P含量呈波动态势,长白落叶松叶片N、P含量逐渐降低;长白落叶松叶片的C/N和C/P平稳升高,红皮云杉叶片的C/N和C/P连续下降,红松叶片的C/N和C/P呈波动态势。长白落叶松和红松叶片的N/P先升高后降低,红皮云杉叶片的N/P先下降后平稳。(3)水曲柳和长白落叶松叶片的N、P含量显著高于红皮云杉和红松叶片的N、P含量,C/N和C/P显著低于红皮云杉和红松叶片的C/N和C/P。结论培育水曲柳长白落叶松混交林和水曲柳纯林优于培育水曲柳红松混交林和水曲柳红皮云杉混交林,培育过程中应注意在生长季初期保证林地氮肥的数量,中期注意补充林地的氮肥和磷肥。

     

  • 图  1  不同林型中水曲柳叶片C、N、P含量及化学计量特征的季节动态

    不同小写字母表示月份间差异显著(P < 0.05),不同大写字母表示不同林型间差异显著(P < 0.05)。下同。

    Figure  1.  Seasonal dynamics of C, N, P concentrations and their ratios in Fraxinus mandshurica leaves of different plantations

    Different small letters mean the difference is significant among varied months (P < 0.05). Different capital letters mean the difference is significant between varied plantation types (P < 0.05). The same below.

    图  2  混交树种叶片C、N、P含量及其化学计量特征的季节动态

    Figure  2.  Seasonal dynamics of C, N, P concentrations and their ratios in the leaves of mixed species

    表  1  研究林分状况

    Table  1.   General information of the study plantations

    林分类型
    Plantation type
    树种
    Species
    平均树高
    Average tree height/m
    平均胸径
    Average DBH/cm
    现存密度/(株·hm-2)
    Present density/
    (plant·ha-1)
    坡位
    Slope position
    坡度
    Slope degree/(°)
    坡向
    Slope aspect
    PF Fra 17.6 12.4 2230 中Middle 8 E
    FLM Lar 17.2 16.8 1097 中Middle 8 E
    Fra 18.5 13.8 453
    FPicM Pic 14.5 12.5 1656 中Middle 8 E
    Fra 17.1 11.3 473
    FPinM Pin 15.2 13.6 1343 中Middle 8 E
    Fra 16.3 10.7 537
    注:Fra为水曲柳;Lar为长白落叶松;Pic为红皮云杉;Pin为红松;PF为水曲柳纯林;FLM为水曲柳长白落叶松混交林;FPicM为水曲柳红皮云杉混交林;FPinM为水曲柳红松混交林。下同。Notes: Fra, Lar, Pic, and Pin mean pure Fraxinus mandshurica, Larix olgensis, Picea koraiensis, and Pinus koraiensis, respectively. PF means pure Fra plantation, FLM, FPicM, and FPinM mean Fra × Lar, Pic, and Pin mixed plantation, respectively. The same below.
    下载: 导出CSV

    表  2  水曲柳叶片C、N、P含量及其生态化学计量特征的变异来源

    Table  2.   Variation sources of C, N, P concentrations, C/N, C/P and N/P in Fraxinus mandshurica leaves

    变异来源
    Source of variation
    营养元素
    Nutrient element
    F P 化学计量
    Stoichiometric
    F P
    林型Plantation type(P) C 1.43 0.248 C/N 8.83 0.000
    时间Time(T) 29.33 0.000 96.01 0.000
    林型×时间(P×T) 1.83 0.076 10.56 0.000
    林型Plantation type(P) N 6.88 0.001 C/P 9.83 0.000
    时间Time(T) 76.74 0.000 265.48 0.000
    林型×时间(P×T) 5.14 0.000 8.64 0.000
    林型Plantation type(P) P 37.66 0.000 N/P 2.33 0.09
    时间Time(T) 434.72 0.000 147.09 0.000
    林型×时间(P×T) 19.32 0.000 8.70 0.000
    注:表中“林型×时间”表示林型和采样时间的交互作用。Note: “P×T” indicates the interaction between plantation type and time.
    下载: 导出CSV

    表  3  水曲柳人工林混交树种叶片C、N、P含量及其生态化学计量特征的变异来源

    Table  3.   Variation sources of C, N, P concentrations and their ratios in the leaves of mixed species

    变异来源
    Source of variation
    营养元素
    Nutrient element
    F P 化学计量
    Stoichiometric
    F P
    树种Species(S) C 5.63 0.003 C/N 491.24 0.000
    时间Time(T) 16.39 0.000 33.75 0.000
    树种×时间(S×T) 3.29 0.002 34.19 0.000
    树种Species(S) N 192.80 0.000 C/P 458.98 0.000
    时间Time(T) 4.74 0.003 7.44 0.000
    树种×时间(S×T) 12.65 0.000 73.35 0.000
    树种Species(S) P 230.60 0.000 N/P 21.88 0.000
    时间Time(T) 35.38 0.000 22.27 0.000
    树种×时间(S×T) 50.00 0.000 21.25 0.000
    注:表中“树种×时间”表示树种和采样时间的交互作用。Note: “S×T” indicates the interaction between species and time.
    下载: 导出CSV

    表  4  水曲柳人工林叶片平均养分含量

    Table  4.   Average nutrient concentration of the leaves in Fraxinus mandshurica plantations

    林型
    Plantation type
    树种
    Species
    C/
    (g·kg-1)
    N/
    (g·kg-1)
    P/
    (g·kg-1)
    C/N C/P N/P
    PF Fra 490.65±33.49Aa 27.27±3.89Aa 2.31±0.85Aa 17.87±1.71Ba 237.58±75.95Ca 13.12±3.29ABa
    FLM Lar 509.63±25.20A 27.09±2.10A 2.15±0.23A 18.89±1.41B 239.59±22.90C 12.70±0.99B
    Fra 497.59±39.50a 29.00±3.12a 2.45±0.89a 17.25±1.29a 225.64±68.28a 12.98±3.40a
    FPicM Pic 487.87±32.02A 18.03±2.53C 1.26±0.22C 27.52±4.08A 397.69±74.93A 14.39±0.66A
    Fra 483.12±29.52a 26.56±3.80a 2.00±0.43a 18.48±2.37a 254.56±65.93a 13.67±2.14a
    FPinM Pin 511.01±36.68A 19.99±1.62B 1.61±0.16B 25.73±2.88A 320.17±31.94B 12.51±1.10B
    Fra 492.77±36.25a 27.75±4.92a 2.19±0.63a 18.21±2.94a 240.63±61.58a 13.12±2.00a
    注:不同小写字母表示不同林型中水曲柳叶片差异显著,不同大写字母表示不同树种差异性显著(P < 0.05)。Notes: different small letters mean the difference is significant among varied plantation types. Different capital letters mean the difference is significant among varied species (P < 0.05).
    下载: 导出CSV
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  • 收稿日期:  2018-05-23
  • 修回日期:  2018-09-12
  • 刊出日期:  2018-10-01

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