Table 1 The simple linear regression slope of precipitation indicators during the period 1961–2015. Note:* represents significance level at p < 0.1 and ** represents significance level at p < 0.05.
China | NW | QP | NE | NCP | SW | SE | ||
|---|---|---|---|---|---|---|---|---|
λ0 | Annual | −1.56E-04* | 2.44E-04** | 5.00E-06 | −1.10E-04 | −6.17E-04** | −8.47E-04** | −5.31E-04** |
Dry season | 7.90E-05 | 3.28E-04** | 2.49E-04* | 5.59E-04** | −3.47E-04 | −6.04E-04** | −3.58E-04 | |
Wet season | −3.89E-04** | 1.62E-04 | −2.36E-04 | −7.72E-04** | −8.84E-04** | −1.09E-03** | −7.02E-04* | |
Spring | −1.17E-04 | 1.21E-04 | 3.87E-04 | 4.10E-04 | −8.32E-04** | −5.93E-04* | −1.02E-03** | |
Summer | −1.62E-04 | 2.34E-04 | −1.20E-04 | −8.31E-04** | −9.56E-04** | −5.22E-04 | 2.71E-04 | |
Autumn | −6.21E-04** | 1.32E-04 | −4.48E-04 | −8.02E-04** | −8.00E-04* | −1.92E-03** | −1.41E-03** | |
Winter | 2.75E-04* | 4.93E-04** | 1.99E-04 | 7.86E-04** | 1.24E-04 | −3.57E-04 | 2.50E-05 | |
1/θ | Annual | 3.74E-04** | 2.26E-04** | 2.06E-04** | 2.44E-04 | 2.56E-04 | 9.30E-05 | 1.36E-03** |
Dry season | 4.92E-04** | 2.53E-04* | 3.31E-04** | 6.14E-04* | 2.60E-04 | 6.48E-04* | 1.24E-03** | |
Wet season | 4.03E-04** | 2.54E-04* | 2.26E-04** | 4.54E-04 | 2.51E-04 | −3.70E-05 | 1.39E-03** | |
Spring | 8.07E-04** | 6.00E-04** | 5.76E-04** | 1.16E-03** | 1.58E-03** | 7.57E-04* | 7.91E-04 | |
Summer | 2.17E-04 | 8.20E-05 | 1.33E-04 | 1.42E-04 | −1.24E-04 | −6.14E-04 | 1.55E-03** | |
Autumn | 5.74E-04** | 5.66E-04** | 2.16E-04 | 5.00E-04 | 4.77E-04 | 4.04E-04 | 1.39E-03** | |
Winter | 6.93E-04** | 3.47E-04** | 4.73E-04** | 6.28E-04** | 3.00E-05 | 1.13E-03** | 2.06E-03** | |
PVI | Annual | −2.33E-04** | −1.81E-04 | −1.40E-04 | −4.36E-04** | −1.45E-04 | −1.34E-04 | −4.58E-04 |
Dry season | 7.98E-04 | 1.26E-03 | 6.64E-04 | 1.54E-03 | 4.59E-04 | 1.34E-03** | −7.83E-04 | |
Wet season | −3.93E-04* | −5.41E-04 | −4.51E-04 | −1.10E-04 | −4.15E-04 | 2.27E-04 | −6.20E-04 | |
Spring | 1.51E-04 | −1.38E-04 | 9.91E-04** | 2.82E-04 | −8.97E-04 | 4.35E-04 | −2.10E-05 | |
Summer | −2.06E-04 | −4.80E-05 | −3.75E-04 | 4.93E-04 | −3.90E-05 | 7.08E-04* | −1.64E-03** | |
Autumn | −1.67E-03 | −3.06E-03 | −1.10E-05 | −6.06E-03** | −3.11E-03 | 1.96E-03 | 1.09E-03 | |
Winter | 2.24E-03* | 1.93E-03 | 4.83E-03* | 1.77E-03 | 7.84E-04 | 3.93E-03** | −7.65E-04 | |
TP | Annual | 0.07 | 0.34** | 0.34* | 0.23 | −1.21* | −1.54** | 0.94 |
Dry season | 0.11 | 0.14** | 0.12** | 0.41** | −0.22 | −0.25 | 0.3 | |
Wet season | −0.05 | 0.2 | 0.22 | −0.18 | −0.99* | −1.30** | 0.63 | |
Spring | 0.03 | 0.10* | 0.21** | 0.44** | −0.13 | −0.07 | −0.56 | |
Summer | 0.08 | 0.06 | 0.14 | −0.27 | −0.77* | −0.72 | 1.48** | |
Autumn | −0.17 | 0.11** | −0.04 | −0.12 | −0.33 | −0.79** | −0.5 | |
Winter | 0.13** | 0.07** | 0.04* | 0.18** | 0.03 | 0.04 | 0.51 |