黄河流域绿色发展效率时空演进
周福礼, 海盼盼, 王雪妮

Green development efficiency measurement and the spatio- temporal evolution of Yellow River Basin based on a multi-period two-stage DEA model
Fuli Zhou, Panpan Hai, Xueni Wang
图2 2014—2020年黄河流域省份绿色发展空间格局
Fig.2 Spatial pattern of green development in the Yellow River Basin in 2014-2020