山东省旅游经济与城市生态韧性协同演化研究

王松茂, 牛金兰

Co-evolution of tourism economy and urban ecological resilience in Shandong province

WANG Songmao, NIU Jinlan

图4 2011—2020年山东省旅游经济与城市生态韧性协同演化核密度估计

Fig. 4 Kernel density estimation of co-evolution of tourism economy and urban ecological resilience from 2011 to 2020