Biodiv Sci ›› 2015, Vol. 23 ›› Issue (4): 463-470. DOI: 10.17520/biods.2015011
• Original Papers: Plant Diversity • Previous Articles Next Articles
Qingfu Liu1, Yang Liu1, Xiaoli Sun1, Xuefeng Zhang1, Sarula Kang1, Yong Ding2, Qing Zhang1,3,*(), Jianming Niu1,3,*(
)
Received:
2015-01-14
Accepted:
2015-06-12
Online:
2015-07-20
Published:
2015-08-03
Contact:
Zhang Qing,Niu Jianming
Qingfu Liu, Yang Liu, Xiaoli Sun, Xuefeng Zhang, Sarula Kang, Yong Ding, Qing Zhang, Jianming Niu. The explanation of climatic hypotheses to community species diversity patterns in Inner Mongolia grasslands[J]. Biodiv Sci, 2015, 23(4): 463-470.
类型 Class | 成分 Component | 特征值 Eigenvalue | 方差贡献率 Contribution rate of variance (%) | 方差累计贡献率 Cumulative contribution rate of variance (%) |
---|---|---|---|---|
能量 | 1 | 4.126 | 82.525 | 82.525 |
Energy | 2 | 0.749 | 14.972 | 97.497 |
3 | 0.100 | 2.006 | 99.502 | |
4 | 0.024 | 0.470 | 99.973 | |
5 | 0.001 | 0.027 | 100.000 | |
水分 | 1 | 2.831 | 94.363 | 94.363 |
Moisture | 2 | 0.168 | 5.588 | 99.951 |
3 | 0.001 | 0.049 | 100.000 |
Table 1 Eigenvalues and contribution rates of the energy and moisture climate factors
类型 Class | 成分 Component | 特征值 Eigenvalue | 方差贡献率 Contribution rate of variance (%) | 方差累计贡献率 Cumulative contribution rate of variance (%) |
---|---|---|---|---|
能量 | 1 | 4.126 | 82.525 | 82.525 |
Energy | 2 | 0.749 | 14.972 | 97.497 |
3 | 0.100 | 2.006 | 99.502 | |
4 | 0.024 | 0.470 | 99.973 | |
5 | 0.001 | 0.027 | 100.000 | |
水分 | 1 | 2.831 | 94.363 | 94.363 |
Moisture | 2 | 0.168 | 5.588 | 99.951 |
3 | 0.001 | 0.049 | 100.000 |
能量因子 Energy factors | 成分 Component | |||||||
---|---|---|---|---|---|---|---|---|
1 | 2 | 3 | 4 | 5 | ||||
潜在蒸散量 Potential evapotranspiration (PET, mm) | 0.864 | -0.451 | 0.220 | -0.039 | -0.001 | |||
年平均气温 Mean annual temperature (MAT, °C) | 0.989 | -0.095 | -0.095 | 0.051 | -0.027 | |||
最暖月平均气温 Mean temperature of warmest month (WMT, °C) | 0.832 | 0.536 | 0.127 | 0.074 | 0.009 | |||
最冷月平均气温 Mean temperature of coldest month (CMT, °C) | 0.932 | -0.328 | -0.148 | 0.028 | 0.023 | |||
温暖指数 Warmth index (WI) | 0.917 | 0.376 | -0.070 | -0.115 | -0.001 | |||
水分因子 Moisture factors | 成分 Component | |||||||
1 | 2 | 3 | ||||||
年平均降水量 Mean annual precipitation (MAP, mm) | 0.350 | -0.791 | -19.410 | |||||
最湿润季降水量 Precipitation of wettest quarter (PWQ, mm) | 0.347 | -1.133 | 17.474 | |||||
最干燥季降水量 Precipitation of driest quarter (PDQ, mm) | 0.333 | 2.014 | 2.211 |
Table 2 Matrix of principal components of energy and moisture climate factors
能量因子 Energy factors | 成分 Component | |||||||
---|---|---|---|---|---|---|---|---|
1 | 2 | 3 | 4 | 5 | ||||
潜在蒸散量 Potential evapotranspiration (PET, mm) | 0.864 | -0.451 | 0.220 | -0.039 | -0.001 | |||
年平均气温 Mean annual temperature (MAT, °C) | 0.989 | -0.095 | -0.095 | 0.051 | -0.027 | |||
最暖月平均气温 Mean temperature of warmest month (WMT, °C) | 0.832 | 0.536 | 0.127 | 0.074 | 0.009 | |||
最冷月平均气温 Mean temperature of coldest month (CMT, °C) | 0.932 | -0.328 | -0.148 | 0.028 | 0.023 | |||
温暖指数 Warmth index (WI) | 0.917 | 0.376 | -0.070 | -0.115 | -0.001 | |||
水分因子 Moisture factors | 成分 Component | |||||||
1 | 2 | 3 | ||||||
年平均降水量 Mean annual precipitation (MAP, mm) | 0.350 | -0.791 | -19.410 | |||||
最湿润季降水量 Precipitation of wettest quarter (PWQ, mm) | 0.347 | -1.133 | 17.474 | |||||
最干燥季降水量 Precipitation of driest quarter (PDQ, mm) | 0.333 | 2.014 | 2.211 |
Fig. 4 The explanation of energy and moisture climate factors to species diversity patterns in Inner Mongolia grassland. a is the independent component attributed to energy factors, b is the covarying component of energy factors and moisture factors, c is the independent component attributed to moisture factors, d is residual deviance.
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