Scientia Silvae Sinicae ›› 2023, Vol. 59 ›› Issue (7): 96-105.doi: 10.11707/j.1001-7488.LYKX20210721
• Research papers • Previous Articles Next Articles
Haotong Ma,Guangze Jin,Zhili Liu*
Received:
2021-09-22
Online:
2023-07-25
Published:
2023-09-08
Contact:
Zhili Liu
CLC Number:
Haotong Ma,Guangze Jin,Zhili Liu. Changes of Basal Area Growth of Pinus koraiensis with Tree Ages and Impact Factors in Xiaoxing’ anling Mountains, Northeast China[J]. Scientia Silvae Sinicae, 2023, 59(7): 96-105.
Table 1
Descriptive statistics for basal area growth rate (BAGR), tree age, environmental factors (light intensity, soil water concentration, soil nitrogen concentration, soil pH) and functional traits (leaf traits, branch traits, root traits) for P. koraiensis"
因子 Factors | 幼龄树 Young tree (n=19) | 中龄树 Middle-aged tree (n=35) | 老龄树 Old tree (n=11) | |||||
平均值(标准差) Mean (SD) | 变异系数 CV (%) | 平均值(标准差) Mean (SD) | 变异系数 CV (%) | 平均值(标准差) Mean (SD) | 变异系数 CV (%) | |||
胸高断面积生长率BAGR/ (cm2·a?1) | 2.54 (2.45) | 97 | 23.29 (18.25) | 78 | 35.84 (14.79) | 41 | ||
树龄Tree age/ a | 49 (27) | 54 | 157 (29) | 18 | 251 (22) | 9 | ||
光照强度Light intensity/ (mol·m?2d?1) | 3.77 (1.30) | 34 | 4.93 (1.28) | 26 | 5.42 (2.12) | 39 | ||
土壤氮含量Soil N content/ (mg·g?1) | 5.91 (2.13) | 37 | 7.52 (2.37) | 31 | 6.42 (2.05) | 32 | ||
土壤磷含量Soil P content/ (mg·g?1) | 0.81 (0.45) | 59 | 1.09 (0.33) | 31 | 0.94 (0.28) | 30 | ||
土壤pH Soil pH | 4.58 (0.70) | 15 | 4.79 (0.57) | 12 | 4.57 (0.68) | 15 | ||
土壤含水量Soil water content/ (g·g?1) | 0.61 (0.23) | 37 | 0.69 (0.26) | 38 | 0.67 (0.23) | 34 | ||
针叶寿命Needle longevity/ a | 4.01 (1.07) | 27 | 3.50 (1.07) | 31 | 3.16 (1.08) | 34 | ||
多年生针叶比叶面积Specific leaf area of old leave(SLAold)/ (cm2·g?1) | 98.25 (11.33) | 12 | 84.28 (8.09) | 10 | 77.77 (5.00) | 6 | ||
当年生针叶比叶面积Specific leaf area of current leave(SLAcurrent)/ (cm2·g?1) | 128.77 (22.15) | 17 | 98.73 (12.61) | 13 | 91.62 (12.39) | 14 | ||
多年生针叶氮含量Nitrogen content of old leaves(LNmass-old)/ (mg·g?1) | 15.87 (1.17) | 7 | 16.32 (1.13) | 7 | 16.10 (1.81) | 11 | ||
当年生针叶氮含量Nitrogen content of current leaves(LNmass-current)/ (mg·g?1) | 17.78 (1.27) | 7 | 17.80 (1.18) | 7 | 18.59 (2.13) | 11 | ||
多年生针叶磷含量Phosphorus content of old leaves(LPmass-old)/ (mg·g?1) | 2.14 (0.28) | 13 | 2.06 (0.27) | 13 | 2.22 (0.22) | 9 | ||
当年生针叶磷含量Phosphorus content of current leaves(LPmass-current)/ (mg·g?1) | 2.72 (0.43) | 16 | 2.39 (0.34) | 14 | 1.89 (0.17) | 10 | ||
多年生枝木质密度Wood density of old branch(WDold)/ (g·cm?3) | 0.43 (0.06) | 15 | 0.49 (0.06) | 13 | 0.53 (0.05) | 9 | ||
当年生枝木质密度Wood density of current branch(WDcurrent)/ (g·cm?3) | 0.34 (0.08) | 24 | 0.39 (0.11) | 29 | 0.51 (0.14) | 27 | ||
根氮含量Root nitrogen content(Root N)/ (mg·g?1) | 12.04 (1.82) | 15 | 11.38 (1.06) | 9 | 10.63 (1.33) | 12 | ||
一级根比根长Specific root length(SRL)/ (m·g?1) | 34.08 (5.75) | 17 | 39.41 (5.05) | 13 | 40.65 (5.46) | 13 |
Table 2
Loadings of variables on the first two PCA dimensions of environment factor"
变量 Variable | 幼龄树 Young tree (n=19) | 中龄树 Middle-aged tree (n=35) | 老龄树 Old tree (n=11) | ||||||
PC1 | PC2 | PC1 | PC2 | PC1 | PC2 | ||||
环境因子 Environment factors | 光照强度Light intensity | 0.17 | ?0.72 | ?0.20 | ?0.67 | 0.17 | ?0.72 | ||
土壤氮含量Soil N content | ?0.53 | ?0.22 | ?0.58 | 0.12 | ?0.47 | ?0.33 | |||
土壤磷含量Soil P content | ?0.52 | ?0.38 | ?0.56 | ?0.10 | ?0.56 | ?0.07 | |||
土壤pH Soil pH | ?0.34 | 0.53 | 0.19 | ?0.73 | ?0.26 | ?0.66 | |||
土壤含水量Soil water content | ?0.55 | 0.02 | ?0.52 | ?0.04 | ?0.52 | 0.28 | |||
解释变异 Explained variation (%) | 54.9 | 27.1 | 40.9 | 21.1 | 56.8 | 27.6 | |||
累计变异 Cumulative variation (%) | 54.9 | 82.0 | 40.9 | 62.0 | 56.8 | 84.4 |
Table 3
Loadings of variables on the first two PCA dimensions of functional trait"
变量 Variable | 幼龄树 Young tree (n=19) | 中龄树 Middle-aged tree (n=35) | 老龄树 Old tree (n=11) | ||||||
PC1 | PC2 | PC1 | PC2 | PC1 | PC2 | ||||
功能性状 Functional traits | 多年生针叶比叶面积SLAold | 0.39 | 0.12 | ?0.05 | ?0.04 | 0.07 | 0.58 | ||
当年生针叶比叶面积SLAcurrent | 0.45 | 0.10 | ?0.24 | 0.17 | 0.11 | 0.56 | |||
多年生针叶氮含量LNmass-old | ?0.22 | ?0.11 | ?0.21 | 0.45 | 0.41 | 0.01 | |||
当年生针叶氮含量LNmass-current | ?0.07 | ?0.31 | ?0.26 | 0.32 | 0.24 | ?0.32 | |||
多年生针叶磷含量LPmass-old | 0.22 | 0.39 | 0.30 | 0.52 | 0.38 | ?0.10 | |||
当年生针叶磷含量LPmass-current | 0.33 | 0.42 | 0.34 | 0.45 | 0.27 | ?0.16 | |||
针叶寿命Needle longevity | ?0.06 | 0.49 | 0.31 | ?0.03 | 0.24 | ?0.30 | |||
多年生枝木质密度WDold | ?0.36 | 0.37 | 0.53 | 0.02 | ?0.35 | 0.10 | |||
当年生枝木质密度WDcurrent | ?0.39 | 0.17 | 0.47 | ?0.10 | ?0.15 | ?0.20 | |||
根氮含量Root N | 0.24 | ?0.32 | ?0.14 | 0.20 | 0.44 | 0.08 | |||
一级根比根长SRL | ?0.29 | 0.19 | ?0.05 | 0.39 | 0.38 | 0.26 | |||
解释变异 Explained variation (%) | 36.3 | 18.6 | 34.4 | 18.1 | 35.4 | 21.4 | |||
累计变异 Cumulative variation (%) | 36.3 | 54.9 | 34.4 | 52.5 | 35.4 | 56.9 |
Table 4
Generalized linear models (GLM) among tree age, the first two PCA dimensions of environment factors and PCA dimensions of functional traits for BAGR of P. koraiensis with different ages"
因子 Factors | 幼龄树 Young tree (n=19) | 中龄树 Middle-aged tree (n=35) | 老龄树 Old tree (n=11) | |||||
回归系数Regression coefficient | P | 回归系数Regression coefficient | P | 回归系数Regression coefficient | P | |||
树龄Tree age | 0.030 | 0.036* | 0.003 | 0.092 | ?0.013 | < 0.001*** | ||
环境因子PC1轴 Environment factors PC1 | ?0.749 | 0.799 | ?0.520 | < 0.001*** | 0.008 | 0.911 | ||
环境因子PC2轴 Environment factors PC2 | ?0.053 | 0.006** | ?0.055 | 0.403 | ?0.244 | 0.063 | ||
功能性状PC1轴 Functional traits PC1 | ?0.432 | 0.031* | ?0.522 | < 0.001*** | 0.475 | 0.003** | ||
功能性状PC2轴 Functional traits PC2 | 0.076 | 0.667 | 0.051 | 0.289 | 0.496 | < 0.001*** | ||
截距Intercept | ?1.057 | 0.191 | 2.531 | < 0.001*** | 6.881 | < 0.001*** |
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