Characterizing the time evolution of green innovation efficiency in the Chinese tourism industry
According to the changes of green innovation efficiency and the regional coefficient of variation (CV) of tourism industry for 297 Chinese cities from 2000 to 2020 (Fig. 1), we found that the green innovation efficiency of China’s tourism industry was generally at a medium level, showing the “W” type of “decreasing–rising–decreasing–rising”.
Characterization of the spatial evolution of green innovation efficiency in the Chinese tourism industry
At the regional level, the green innovation efficiency of China’s tourism industry from 2000 to 2020 had a decreasing distribution pattern that followed “east–middle–west”; and obvious pattern of evolution and internal differences among the three major regions (Fig. 2). The temporal evolution patterns and internal differences among the three regions were also…
