黄河流域旅游高质量发展空间差异、重心演化及优化路径
邬超, 周成, 杨兆丰, 刘亚玲, 郑涵夫

Spatial differencefocus shifting and optimization of high-quality tourism in the Yellow River Basin
Chao Wu, Cheng Zhou, Zhaofeng Yang, Yaling Liu, Hanfu Zheng
表3 20172021年黄河流域旅游高质量发展标准差椭圆基本参数
Table 3 Basic elliptical parameters of the standard deviation of high-quality tourism development in the Yellow River Basin from 2017 to 2021
年份重心经度(°E)重心纬度(°N)长半轴/km短半轴/km椭圆面积/万km2旋转角/(°)扁率移动距离/km
2017年111.7536.02848.59469.22125.0868.640.45
2018年111.7335.88815.48464.37118.9665.170.4315.71
2019年111.3735.71809.18457.23116.2264.620.4344.24
2020年111.2435.64823.94458.12118.5765.810.4416.41
2021年111.1635.53823.05451.42116.7164.640.4515.11