黄河流域生态足迹演进、时空分异与驱动因素——兼论环境库兹涅茨曲线的空间效应

冀雪霜, 孙鹏

Evolution， spatio-temporal differentiation and driving factors of ecological footprint in the Yellow River Basin： the spatial effect of environmental Kuznets curve

Xueshuang Ji, Peng Sun

图4 黄河流域上中下游生态指标时序

Fig.4 Time sequence of ecological indicators in the upper， middle and lower reaches of the Yellow River Basin