Bulletin of Botanical Research ›› 2024, Vol. 44 ›› Issue (6): 870-878.doi: 10.7525/j.issn.1673-5102.2024.06.008
• Physiology and Ecology • Previous Articles Next Articles
Hao ZHANG1, Wansheng LIU1, Yanqi WANG2, Xi CHEN1, Liqiang MU1()
Received:
2024-07-29
Online:
2024-11-20
Published:
2024-11-22
Contact:
Liqiang MU
E-mail:mlq0417@163.com
CLC Number:
Hao ZHANG, Wansheng LIU, Yanqi WANG, Xi CHEN, Liqiang MU. Intraspecific and Interspecific Competitions of the Three Hardwood Tree species in Northeast China[J]. Bulletin of Botanical Research, 2024, 44(6): 870-878.
Table 1
Important values of tree species in the sample plot
树种 Species | 株数 Number | 相对优势度 Relative dominance | 相对多度 Relative abundance | 相对频度 Relative frequency | 重要值 Important value/% |
---|---|---|---|---|---|
共计Total | 781 | 1.000 | 1.000 | 1.000 | 100.0 |
白桦 Betula platyphylla | 38 | 0.059 | 0.049 | 0.070 | 5.9 |
紫椴 Tilia amurensis | 55 | 0.023 | 0.070 | 0.123 | 7.2 |
胡桃楸 Juglans mandshurica | 128 | 0.365 | 0.164 | 0.134 | 22.1 |
黄檗 Phellodendron amurense | 79 | 0.146 | 0.101 | 0.118 | 12.2 |
蒙古栎 Quercus mongolica | 31 | 0.011 | 0.040 | 0.069 | 4.0 |
五角槭 Acer truncatum | 72 | 0.015 | 0.092 | 0.101 | 6.9 |
山杨 Populus davidiana | 85 | 0.144 | 0.109 | 0.085 | 11.3 |
水曲柳 Fraxinus mandshurica | 82 | 0.106 | 0.105 | 0.123 | 11.1 |
春榆 Ulmus davidiana var. japonica | 199 | 0.121 | 0.255 | 0.134 | 17.0 |
其他Other | 12 | 0.010 | 0.015 | 0.043 | 2.3 |
Fig.1
Competition intensity of three species under different competition radiusA.Competition intensity of Juglans mandshurica under different competition radius;B.Competition intensity of Phellodendron amurense under different competition radius;C.Competition intensity of Fraxinus mandshurica under different competition radius.
Table 2
Intraspecific and interspecific competition intensity of Juglans mandshurica
径级 Diameter class/cm | 种内竞争 Intraspecific competition | 种间竞争 Interspecific competition | ||||
---|---|---|---|---|---|---|
株数 Number | 竞争指数 Competition index | 平均竞争指数 Average competition index | 株数 Number | 竞争指数 Competition index | 平均竞争指数 Average competition index | |
合计Total | 68 | 50.25 | 89 | 95.09 | ||
5≤DBH<10 | 0 | 1 | 10.71 | 10.71 | ||
10≤DBH<15 | 4 | 4.19 | 1.05 | 4 | 15.87 | 3.97 |
15≤DBH<20 | 9 | 7.59 | 0.84 | 10 | 10.52 | 1.05 |
20≤DBH<25 | 19 | 17.26 | 0.91 | 18 | 17.96 | 1.00 |
25≤DBH<30 | 16 | 10.71 | 0.67 | 21 | 19.95 | 0.95 |
30≤DBH<35 | 13 | 7.93 | 0.61 | 21 | 13.58 | 0.65 |
35≤DBH<40 | 3 | 1.01 | 0.34 | 8 | 4.15 | 0.52 |
DBH≥40 | 4 | 1.56 | 0.39 | 6 | 2.35 | 0.39 |
Table 3
Intraspecific and interspecific competition intensity of Phellodendron amurense
径级 Diameter class/cm | 种内竞争 Intraspecific competition | 种间竞争 Interspecific competition | ||||
---|---|---|---|---|---|---|
株数 Number | 竞争指数 Competition index | 平均竞争指数 Average competition index | 株数 Number | 竞争指数 Competition index | 平均竞争指数 Average competition index | |
合计Total | 39 | 35.76 | 53 | 93.53 | ||
5≤DBH<10 | 0 | 3 | 16.36 | 5.45 | ||
10≤DBH<15 | 2 | 5.12 | 2.56 | 3 | 4.48 | 1.49 |
15≤DBH<20 | 10 | 12.57 | 1.26 | 10 | 26.92 | 2.69 |
20≤DBH<25 | 20 | 14.97 | 0.75 | 25 | 35.35 | 1.41 |
25≤DBH<30 | 6 | 2.51 | 0.42 | 10 | 9.75 | 0.98 |
30≤DBH<35 | 1 | 0.59 | 0.59 | 1 | 0.29 | 0.29 |
35≤DBH<40 | 0 | 0 | ||||
DBH≥40 | 0 | 1 | 0.38 | 0.38 |
Table 4
Intraspecific and interspecific competition intensity of Fraxinus mandshurica
径级 Diameter class/cm | 种内竞争 Intraspecific competition | 种间竞争 Interspecific competition | ||||
---|---|---|---|---|---|---|
株数 Number | 竞争指数 Competition index | 平均竞争指数 Average competition index | 株数 Number | 竞争指数 Competition index | 平均竞争指数 Average competition index | |
合计Total | 32 | 26.24 | 59 | 216.75 | ||
5≤DBH<10 | 14 | 17.33 | 1.24 | 23 | 158.01 | 6.87 |
10≤DBH<15 | 2 | 0.75 | 0.38 | 7 | 20.31 | 2.90 |
15≤DBH<20 | 4 | 1.84 | 0.46 | 8 | 13.49 | 1.69 |
20≤DBH<25 | 4 | 1.32 | 0.33 | 5 | 9.02 | 1.80 |
25≤DBH<30 | 3 | 0.95 | 0.32 | 7 | 7.48 | 1.07 |
30≤DBH<35 | 3 | 3.03 | 1.01 | 6 | 6.28 | 1.05 |
35≤DBH<40 | 1 | 0.85 | 0.85 | 2 | 1.72 | 0.86 |
DBH≥40 | 1 | 0.17 | 0.17 | 1 | 0.44 | 0.44 |
Table 5
Competition intensity between the three hardwood tree species and different tree species
树种 Species | 胡桃楸 Juglans mandshurica | 黄檗 Phellodendron amurense | 水曲柳 Fraxinus mandshurica | ||||||
---|---|---|---|---|---|---|---|---|---|
株数 Number | 竞争指数 Competition index | 平均竞争指数 Average competition index | 株数 Number | 竞争指数 Competition index | 平均竞争指数 Average competition index | 株数 Number | 竞争指数 Competition index | 平均竞争指数 Average competition index | |
共计Total | 342 | 145.36 | 234 | 129.27 | 290 | 242.98 | |||
白桦 Betula platyphylla | 13 | 4.39 | 0.34 | 4 | 1.91 | 0.48 | 10 | 5.80 | 0.58 |
紫椴 Tilia amurensis | 19 | 4.75 | 0.25 | 17 | 3.61 | 0.21 | 19 | 8.61 | 0.45 |
胡桃楸 Juglans mandshurica | 71 | 50.25 | 0.71 | 27 | 33.84 | 1.25 | 50 | 70.84 | 1.42 |
黄檗 Phellodendron amurense | 37 | 25.76 | 0.70 | 51 | 35.75 | 0.70 | 31 | 46.47 | 1.50 |
蒙古栎 Quercus mongolica | 14 | 3.20 | 0.23 | 10 | 3.13 | 0.31 | 13 | 4.72 | 0.36 |
五角槭 Acer truncatum | 26 | 5.46 | 0.21 | 22 | 4.05 | 0.18 | 23 | 11.55 | 0.50 |
山杨 Populus davidiana | 17 | 8.04 | 0.47 | 23 | 14.47 | 0.63 | 28 | 37.82 | 1.35 |
水曲柳 Fraxinus mandshurica | 46 | 17.36 | 0.38 | 28 | 11.19 | 0.40 | 34 | 26.22 | 0.77 |
春榆 Ulmus davidiana var. japonica | 94 | 24.64 | 0.26 | 51 | 21.14 | 0.41 | 76 | 28.43 | 0.37 |
其他Other | 5 | 1.51 | 0.30 | 1 | 0.18 | 0.18 | 6 | 2.52 | 0.42 |
Table 6
Correlation analysis of intraspecific and interspecific competition index with DBH of Juglans mandshurica, Phellodendron amurense and Fraxinus mandshurica
树种 Species | 指标 Index | 种内竞争指数 Intraspecific competition index | 种间竞争指数 Interspecific competition index | 总的林分竞争指数 General stand competition index |
---|---|---|---|---|
胡桃楸 Juglans mandshurica | 相关系数 Correlation coefficient | -0.262 | -0.497 | -0.559 |
相对显著度 Relative prominence | <0.050 | <0.001 | <0.001 | |
黄檗 Phellodendron amurense | 相关系数 Correlation coefficient | -0.434 | -0.448 | -0.508 |
相对显著度 Relative prominence | <0.001 | <0.001 | <0.001 | |
水曲柳 Fraxinus mandshurica | 相关系数 Correlation coefficient | -0.367 | -0.631 | -0.634 |
相对显著度 Relative prominence | <0.050 | <0.001 | <0.001 |
Fig.2
Correlations between subject tree DBH and competition index of the competing tree speciesA.The fitting curve of competition index and DBH of Juglans mandshurica with Phellodendron amurense and Fraxinus mandshurica;B.The fitting curve of competition index and DBH of Phellodendron amurense with Juglans mandshurica and Fraxinus mandshurica;C.The fitting curve of competition index and DBH of Fraxinus mandshurica with Juglans mandshurica and Phellodendron amurense.
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