Research Article
Digital Economy’s Spatial Implications on Urban Innovation and Its Threshold: Evidence from China
Table 12
Spatial spillover distance of the impact of the central and western regions’ digital economy on urban innovation.
| | Distance threshold (km) | Direct effect | Indirect effect | Distance threshold (km) | Direct effect | Indirect effect | | Coefficient | t-statistic | Coefficient | t-statistic | Coefficient | t-statistic | Coefficient | t-statistic |
| | 50 | 1.232∗∗∗ | (5.15) | 5.822∗∗∗ | (2.95) | 1050 | 1.621∗∗∗ | (6.39) | −11.904∗∗∗ | (−3.48) | | 100 | 1.210∗∗∗ | (4.83) | 14.749∗∗∗ | (3.06) | 1100 | 1.742∗∗∗ | (6.86) | −11.981∗∗∗ | (−3.69) | | 150 | 1.093∗∗∗ | (4.37) | 10.185∗∗ | (2.28) | 1150 | 1.692∗∗∗ | (6.68) | −11.531∗∗∗ | (−4.12) | | 200 | 0.969∗∗∗ | (3.81) | 5.302∗ | (1.69) | 1200 | 1.760∗∗∗ | (6.88) | −11.041∗∗∗ | (−4.26) | | 250 | 1.106∗∗∗ | (4.39) | 6.570∗ | (1.87) | 1250 | 1.826∗∗∗ | (7.17) | −11.721∗∗∗ | (−3.88) | | 300 | 1.186∗∗∗ | (4.70) | 5.057 | (1.48) | 1300 | 1.855∗∗∗ | (7.17) | −10.188∗∗∗ | (−3.87) | | 350 | 1.246∗∗∗ | (4.89) | 2.836 | (0.91) | 1350 | 1.761∗∗∗ | (6.80) | −8.853∗∗∗ | (−3.73) | | 400 | 1.297∗∗∗ | (5.01) | 3.235 | (1.04) | 1400 | 1.638∗∗∗ | (6.34) | −7.690∗∗∗ | (−3.63) | | 450 | 1.508∗∗∗ | (5.76) | 2.936 | (0.91) | 1450 | 1.597∗∗∗ | (6.19) | −8.044∗∗∗ | (−3.19) | | 500 | 1.524∗∗∗ | (5.84) | 1.984 | (0.60) | 1500 | 1.497∗∗∗ | (5.78) | −5.251∗∗ | (−2.44) | | 550 | 1.664∗∗∗ | (6.46) | −0.205 | (−0.05) | 1550 | 1.520∗∗∗ | (5.87) | −3.601∗ | (−1.93) | | 600 | 1.587∗∗∗ | (6.17) | −3.612 | (−0.83) | 1600 | 1.366∗∗∗ | (5.26) | −2.890∗ | (−1.79) | | 650 | 1.643∗∗∗ | (6.49) | −6.128 | (−1.32) | 1650 | 1.320∗∗∗ | (5.09) | −1.699 | (−1.17) | | 700 | 1.610∗∗∗ | (6.37) | −6.999 | (−1.58) | 1700 | 1.243∗∗∗ | (4.77) | −1.104 | (−0.86) | | 750 | 1.594∗∗∗ | (6.33) | −7.660∗ | (−1.95) | 1750 | 1.323∗∗∗ | (5.14) | −0.517 | (−0.44) | | 800 | 1.655∗∗∗ | (6.56) | −6.633∗∗ | (−2.10) | 1800 | 1.340∗∗∗ | (5.24) | 0.173 | (0.16) | | 850 | 1.538∗∗∗ | (6.10) | −8.320∗∗∗ | (−2.75) | 1850 | 1.524∗∗∗ | (5.97) | −0.337 | (−0.31) | | 900 | 1.522∗∗∗ | (6.00) | −10.389∗∗∗ | (−3.12) | 1900 | 1.642∗∗∗ | (6.39) | −1.024 | (−0.85) | | 950 | 1.585∗∗∗ | (6.25) | −12.409∗∗∗ | (−3.20) | 1950 | 1.551∗∗∗ | (6.12) | 0.614 | (0.51) | | 1000 | 1.596∗∗∗ | (6.32) | −14.328∗∗∗ | (−3.39) | 2000 | 1.551∗∗∗ | (6.06) | 1.837 | (1.56) |
|
|
Note. ∗∗∗, ∗∗, and ∗ represent the significance level at the 1%, 5%, and 10% levels, respectively. The numbers in brackets are the test values t.
|
