黄河流域沿线城市绿色发展效率时空演变及其影响因素
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Spatiotemporal change of urban green development efficiency in the Yellow River Basin and influencing factors
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图1. 2005—2017年黄河流域绿色发展效率趋势图 |
Figure 1. Trend of green development efficiency in the Yellow River Basin, 2005-2017 |
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