碳约束背景下中国三大流域水电能源环境效率评价

The environmental efficiency evaluation of hydropower energy in China’s three river basins under the background of carbon constraints

选取长江、珠江及黄河流域的20个省市的水电相关面板数据,建立了水电能源环境效率评价指标体系;通过超效率SBM模型,基于流域和省域双重视角,对水电能源效率进行测算。结果表明,2016年是水电建设投入新增量总体上由升转降的拐点;长江流域水电能效最优,珠江流域次之,黄河流域较差,流域间及同流域上、中、下游均存在不同程度的时空差异;西南地区和黄河上游的水电能源潜力巨大。提出了促进中国全流域水电的高效绿色发展的建议。

Based on the hydropower related panel data of 20 provinces and cities in the Yangtze River,Pearl River and Yellow River basin,an evaluation index system of hydropower energy environmental efficiency was established.The super-efficiency SBM model was used to calculate the energy efficiency of hydropower from the perspectives of basin and province.The results showed that 2016 was the inflection point of the new increment of hydropower construction investment from up to down,the hydropower efficiency of the Yangtze River basin was the best,the Pearl River basin was the second,and the Yellow River basin was the worse.There were spatial and temporal differences among watersheds and the upper,middle and lower reaches of the same watershed,the hydropower energy potential in the southwest region and the upper reaches of the Yellow River was huge.Some suggestions were put forward to promote the efficient green development of hydropower in the whole basin of China.