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以直接用水系数和完全用水系数为指标,对我国各行业的水资源消耗进行了分析,发现了异质性的存在。以直接用水系数的E-G指数和LQ指数为指标,对我国各行业水资源消耗的行业异质性程度进行了测度,发现了逐步下降的总体趋势。在C-D生产函数的基础上,构建了检验水资源消耗的行业异质性与产业升级之间关系的实证模型。通过以我国30个省级行政区2000—2012年的面板数据为样本进行实证检验得出的结论是:总用水模型和新鲜用水模型中,全国总体、东部地区、中部地区水资源消耗的行业异质性对产业升级产生了显著的负向影响,然而,西部地区的估计结果不显著;技术创新水平的弹性值最高,并且显著。在此基础上,得出了一些简要的启示。
Taking the direct coefficient of water and the complete coefficient of water as an index, we analyzed the water consumption of various industries in our country and found the existence of heterogeneity. Taking the E-G index and LQ index of direct water use coefficient as indicators, the degree of heterogeneity of water consumption in various industries in China was measured and the overall trend of gradual decline was found. Based on the C-D production function, an empirical model to test the relationship between the heterogeneity of the water consumption and industrial upgrading is constructed. The empirical test based on the panel data of 30 provinces in China from 2000 to 2012 leads to the conclusion that in the total water use model and the fresh water use model, the industries of water consumption in the whole country, the eastern region and the central region are heterogeneous However, the estimated results in the western region are not significant; the level of technological innovation has the highest elasticity and is significant. On this basis, we come to some brief enlightenment.