Acta Prataculturae Sinica ›› 2022, Vol. 31 ›› Issue (4): 12-21.DOI: 10.11686/cyxb2021007
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Ling JIN1(), Ying LU1, Hong-bin MA1,2,3, Ying-zhong XIE1,2,3, Yan SHEN1,2,3()
Received:
2021-01-05
Revised:
2021-04-06
Online:
2022-04-20
Published:
2022-01-25
Contact:
Yan SHEN
Ling JIN, Ying LU, Hong-bin MA, Ying-zhong XIE, Yan SHEN. Numerical classification and ordination of the desert steppe plant community in Etuokeqianqi, Inner Mongolia[J]. Acta Prataculturae Sinica, 2022, 31(4): 12-21.
指标Index | 第1轴The first axis | 第2轴The second axis | 第3轴The third axis | 第4轴The fourth axis |
---|---|---|---|---|
特征值Eigenvalues | 0.4998 | 0.3147 | 0.1953 | 0.1465 |
累计解释变量Explained variation cumulative | 5.03 | 8.20 | 10.17 | 11.65 |
非典型相关Pseudo-canonical correlation | 0.7898 | 0.7781 | 0.7153 | 0.6216 |
累计解释拟合变量Explained fitted variation cumulative (%) | 33.87 | 55.20 | 68.44 | 78.37 |
Table 1 CCA sorting statistics
指标Index | 第1轴The first axis | 第2轴The second axis | 第3轴The third axis | 第4轴The fourth axis |
---|---|---|---|---|
特征值Eigenvalues | 0.4998 | 0.3147 | 0.1953 | 0.1465 |
累计解释变量Explained variation cumulative | 5.03 | 8.20 | 10.17 | 11.65 |
非典型相关Pseudo-canonical correlation | 0.7898 | 0.7781 | 0.7153 | 0.6216 |
累计解释拟合变量Explained fitted variation cumulative (%) | 33.87 | 55.20 | 68.44 | 78.37 |
土壤因子 Soil factor | 解释变量 Explains (%) | 贡献值 Contribution (%) | 置换检验 Pseudo-F | 显著性 P | 土壤因子 Soil factor | 解释变量 Explains (%) | 贡献值 Contribution (%) | 置换检验 Pseudo-F | 显著性 P |
---|---|---|---|---|---|---|---|---|---|
H6 | 4.6 | 30.8 | 4.7 | 0.006 | H7 | 1.4 | 9.1 | 1.4 | 0.064 |
H 3 | 2.9 | 19.4 | 3.0 | 0.002 | H4 | 1.0 | 6.8 | 1.1 | 0.324 |
H8 | 1.7 | 11.3 | 1.8 | 0.010 | H5 | 1.0 | 6.6 | 1.1 | 0.376 |
H1 | 1.6 | 11.1 | 1.8 | 0.008 | H2 | 0.7 | 4.9 | 0.8 | 0.780 |
Table 2 Correlation analysis between soil factors and CCA ordination axis of desert steppe in Etuokeqianqi, Inner Mongolia
土壤因子 Soil factor | 解释变量 Explains (%) | 贡献值 Contribution (%) | 置换检验 Pseudo-F | 显著性 P | 土壤因子 Soil factor | 解释变量 Explains (%) | 贡献值 Contribution (%) | 置换检验 Pseudo-F | 显著性 P |
---|---|---|---|---|---|---|---|---|---|
H6 | 4.6 | 30.8 | 4.7 | 0.006 | H7 | 1.4 | 9.1 | 1.4 | 0.064 |
H 3 | 2.9 | 19.4 | 3.0 | 0.002 | H4 | 1.0 | 6.8 | 1.1 | 0.324 |
H8 | 1.7 | 11.3 | 1.8 | 0.010 | H5 | 1.0 | 6.6 | 1.1 | 0.376 |
H1 | 1.6 | 11.1 | 1.8 | 0.008 | H2 | 0.7 | 4.9 | 0.8 | 0.780 |
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