黄河流域城市群生态保护与经济发展耦合的时空格局与机制分析
孙久文, 崔雅琪, 张皓

Spatio-temporal pattern and mechanism analysis of coupling between ecological protection and economic development of urban agglomerations in the Yellow River Basin
SUN Jiu-wen, CUI Ya-qi, ZHANG Hao
图5 黄河流域城市群内各城市空间集聚特征分类
注:各年均按照四个象限划分,即第一象限为HH集聚,第二象限为LH集聚,第三象限为LL集聚,第四象限为HL集聚。
Fig. 5 Classification of spatial agglomeration characteristics of cities in the urban agglomerations of the Yellow River Basin