黄河流域沿线城市绿色发展水平评价及时空演变特征分析

Evaluation of China’s Straddle Monorail Technology Innovation Capability Basedon Patent Analysis

通过标准差椭圆、泰尔指数、全局莫兰指数与Getis-Ord Gi^(*)指数等分析方法,对2010—2019年黄河流域沿线33个地级城市的绿色发展水平进行评价,探究各地绿色发展水平的时空演变特征和差异.研究表明,黄河流域沿线城市绿色发展水平在时序上呈现出“W”形的演变态势,方向特征为偏西北—偏东南,空间表现为“中下游高、上游低”的发展格局,绿色发展水平相当的城市表现出向中游地区扩散的集聚态势;各城市绿色发展水平存在明显差异,区域内差异是造成总体差异的主要原因.

By using methods including standard deviation ellipse,Thile index,global Moran index,and Getis-Ord Gi^(*)index,the green development level of 33 prefecture-level cities along the Yellow River Basin from 2010 to 2019 was evaluated to explore the spatial and temporal evolution characteristics and differences of green development level in each place,and the panel Tobit model was used to study the influencing factors.The study shows that the green development level of cities along the Yellow River Basin shows a W-shaped temporal evolution with a northwest-southeast orientation,and a spatial development pattern of“high in the middle and lower reaches and low in the upper reaches”.Cities with comparable green development levels show a clustering trend of spreading to the middle reaches.There are obvious differences in green development levels among cities,and the intra-regional differences are the main reason for the overall differences.