黄河流域旅游生态安全的动态演变特征及驱动因素
穆学青, 郭向阳, 明庆忠, 胡程

Dynamic evolution characteristics and driving factors of tourism ecological security in the Yellow River Basin
MU Xueqing, GUO Xiangyang, MING Qingzhong, HU Cheng
图4 2008—2017年黄河流域旅游生态安全空间分布格局
Fig. 4 Spatial pattern of tourism ecological security in the Yellow River Basin from 2008 to 2017