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3 黄河流域旅游生态安全箱型图及核密度估计

Fig. 3 Box map and Kernel density estimation for tourism ecological safety in the Yellow River Basin