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江西武夷山南方铁杉种群结构与点格局分析

吴秀萍 许晓岗 王璐 李垚

吴秀萍, 许晓岗, 王璐, 李垚. 江西武夷山南方铁杉种群结构与点格局分析[J]. 北京林业大学学报, 2019, 41(4): 60-68. doi: 10.13332/j.1000-1522.20180309
引用本文: 吴秀萍, 许晓岗, 王璐, 李垚. 江西武夷山南方铁杉种群结构与点格局分析[J]. 北京林业大学学报, 2019, 41(4): 60-68. doi: 10.13332/j.1000-1522.20180309
Wu Xiuping, Xu Xiaogang, Wang Lu, Li Yao. Population structure and spatial distribution point patterns of Tsuga chinensis var. tchekiangensis in Wuyishan Mountain, Jiangxi of eastern China[J]. Journal of Beijing Forestry University, 2019, 41(4): 60-68. doi: 10.13332/j.1000-1522.20180309
Citation: Wu Xiuping, Xu Xiaogang, Wang Lu, Li Yao. Population structure and spatial distribution point patterns of Tsuga chinensis var. tchekiangensis in Wuyishan Mountain, Jiangxi of eastern China[J]. Journal of Beijing Forestry University, 2019, 41(4): 60-68. doi: 10.13332/j.1000-1522.20180309

江西武夷山南方铁杉种群结构与点格局分析

doi: 10.13332/j.1000-1522.20180309
基金项目: 江苏省林业局科技创新与推广项目(LYKJ[2018]13),南京市绿化园林局科技项目(YLKJ201812ZD),江苏高校优势学科建设工程资助项目(PAPD),常熟市科技发展计划(农业)项目(CN201710)
详细信息
    作者简介:

    吴秀萍。主要研究方向:植物学。Email:1185231721@qq.com  地址:210037 江苏省南京市玄武区龙蟠路159号南京林业大学生物与环境学院

    责任作者:

    许晓岗,博士,副教授。主要研究方向:植物分类学、植物资源利用。Email: xiaogangb.xu@gmail.com  地址:同上

  • 中图分类号: S718.54;S791.17

Population structure and spatial distribution point patterns of Tsuga chinensis var. tchekiangensis in Wuyishan Mountain, Jiangxi of eastern China

  • 摘要:   目的   了解武夷山自然保护区内南方铁杉的种群结构及空间分布情况,对揭示南方铁杉的演替更新具有重要意义。   方法   对南方铁杉种群进行样地调查,通过种群年龄结构分析、静态生命表编制、生存分析、时间序列模型预测和点格局分析探索了南方铁杉种群结构和空间分布格局。   结果   (1)南方铁杉种群年龄结构呈“金字塔”型,属增长型种群,存活曲线趋于Deevey-Ⅰ型,存活曲线、死亡率和消失率曲线以及生存函数分析表明种群具有前期稳定、中期减少和后期衰退的特点。(2)时间序列预测未来3、6和9个龄级时间后南方铁杉种群各龄级个体数均逐渐增加,南方铁杉幼年个体数相对丰富,老龄级树有较充足的后备资源得以补充,种群能自然更新。(3)南方铁杉种群整体在小尺度(r < 20 m)呈聚集分布,随尺度的增加呈随机分布或均匀分布;种群不同发育阶段的空间分布格局与研究尺度紧密相关,幼树明显呈聚集分布,中树随研究尺度增大由聚集分布向随机分布转变,老树基本呈随机分布。   结论   南方铁杉种群天然更新能力较强,保护区维持现有的生境条件,南方铁杉种群将继续呈增长状态。

     

  • 图  1  南方铁杉种群年龄结构

    Figure  1.  Age structure of Tsuga chinensis var. tchekiangensis population

    图  2  南方铁杉种群存活曲线、死亡率(qx)、消失率(Kx)曲线

    Figure  2.  Survival curve, mortality rate (qx) and vanish rate (Kx) curves of Tsuga chinensis var. tchekiangensis population

    图  3  南方铁杉种群生存分析曲线

    Figure  3.  Survival analysis curves of Tsuga chinensis var. tchekiangensis population

    图  4  南方铁杉种群空间分布

    Figure  4.  Point pattern analysis of Tsuga chinensis var. tchekiangensis population

    表  1  南方铁杉种群静态生命表

    Table  1.   Static life table of Tsuga chinensis var. tchekiangensis population

    龄级
    Age class
    DBH/cm 组中值
    Group median/cm
    ax lx lnlx dx qx Lx Tx ex Kx Sx
    1 0 ~ 10 5 146 1 000 6.908 14 0.014 0 993 5 629 5.629 0.014 0.986
    2 10 ~ 20 15 144 986 6.894 41 0.041 6 965.5 4 636 4.702 0.043 0.958
    3 20 ~ 30 25 138 945 6.851 41 0.043 4 924.5 3 670.5 3.884 0.045 0.957
    4 30 ~ 40 35 132 904 6.806 41 0.045 4 883.5 2 746 3.038 0.046 0.955
    5 40 ~ 50 45 126 863 6.760 233 0.270 0 746.5 1 862.5 2.158 0.314 0.730
    6 50 ~ 60 55 92 630 6.446 164 0.260 3 548 1 116 1.771 0.322 0.740
    7 60 ~ 70 65 68 466 6.144 261 0.560 1 335.5 568 1.219 0.821 0.440
    8 70 ~ 80 75 30 205 5.323 123 0.600 0 143.5 232.5 1.134 0.916 0.400
    9 80 ~ 90 85 12 82 4.407 34 0.414 6 65 89 1.085 0.536 0.585
    10 90 ~ 100 95 7 48 3.871 24 24 0.5
    注:ax存活数;lx存活量;dx死亡数;qx死亡率;Lx区间寿命;Tx总寿命;ex期望寿命;Kx消失率;Sx存活率。Notes: ax means survival; lx means survival quantity; dx means death number; qx means mortality rate; Lx means span life; Tx means total life; ex means life expectancy; Kx means vanish rate; Sx means survival rate.
    下载: 导出CSV

    表  2  南方铁杉种群龄级结构的时间预测

    Table  2.   Time sequence prediction in the quantitative dynamics of Tsuga chinensis var. tchekiangensis population

    龄级
    Age class
    原始数据
    Primary data
    M3(1) M6(1) M9(1)
    1 146
    2 144
    3 138 143
    4 132 138
    5 126 132
    6 92 117 130
    7 68 95 117
    8 30 63 98
    9 12 35 77 99
    10 7 16 56 83
    下载: 导出CSV
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