京津冀地区用水演变特征与边际效益分析

    Analysis on Water Consumption Evolution Characteristics and Marginal Benefit in Beijing-Tianjin-Hebei Region

    • 摘要: 京津冀地区属于“资源型”缺水区域,水资源短缺已成为制约其经济社会发展的关键因素。基于2003~2017 年京津冀地区用水量及经济指标等相关数据, 利用变异系数和泰尔系数揭示了该地区的用水演变特征,同时,采用柯布—道格拉斯生产函数核算了其水资源利用的边际效益。 结果表明,京津冀地区农业、工业和生活多年平均用水边际效益分别为8.17 元/m3、97.88 元/m3、112.52元/m3。 其中,天津市和河北省的农业用水边际效益呈递减趋势,其余各地区、各产业用水边际效益均呈递增趋势。

       

      Abstract: The Beijing-Tianjin-Hebei region is a “resource-based” region with water shortage. The water recourse shortage has become a key factor restricting its social and economic development. Based on the data of water consumption and economic indicators of Beijing-Tianjin-Hebei region from 2003-2017, the coefficient of variation and Theil coefficient are used to reveal the characteristics of water consumption evolution in this region. The marginal benefit of water resource utilization is calculated by using the Cobb-Douglas production function. The results show that the average annual marginal benefit of agriculture, industry and domestic water of Beijing-Tianjin-Hebei region were 8.17 ¥/m3, 97.88 ¥/m3 and 112.52 ¥/m3.The marginal benefits of agricultural water consumption of Tianjin and Hebei Province showed a decreasing trend, and the marginal benefits of other industries showed an increasing trend.

       

    /

    返回文章
    返回