水资源效益与城乡供水一体化发展耦合效应分析——以洛川县为例

为了研究水资源效益与城乡供水一体化发展之间的协调程度,以延安市洛川县为例,在建立水资源效益系统和城乡供水一体化发展系统的评价指标体系的基础上,运用脉冲响应函数(IRF)、耦合度及耦合协调度模型等方法对洛川县水资源效益系统与城乡供水一体化发展系统进行耦合效应分析。结果表明:节水灌溉面积的增加与城乡供水一体化发展水平的提高彼此之间具有相互促进作用,农业万元GDP用水随着城乡供水一体化发展水平的提高先是持续减小,后有所增加,而城乡供水一体化发展水平对农业万元GDP用水增大的响应却相反;2007-2015年洛川县水资源效益综合评价指数整体呈增大趋势,城乡供水一体化发展综合评价指数逐年增大,且两者之间相关系数高达0.965;洛川县水资源效益系统与城乡供水一体化发展系统之间耦合度均在0.4~0.5之间,耦合协调度逐年提升,从2007-2010年的失调阶段发展到2011-2015年的协调阶段。

Analysis of coupling effect between water resources benefits and the integration of urban and rural water supply development: a case study of Luochuan County

In order to study the coordination degree between water resources benefits and the integration of urban and rural water supply, based on the evaluation index system on the coupling between water resources benefits system and the integration of urban and rural water supply development system, Luochuan county in Yan''an city was used as an example to apply impulse response function(IRF), coupling degree and coupling coordination degree to conduct analysis of coupling effect between water resources benefits system and the integration of urban and rural water supply development system. The results showed that the increase of water-saving irrigation area and the increase of the level of the integration of urban and rural water supply have mutual promoting effects. Agricultural ten thousand yuan GDP water consumption first continues to decrease and then increases with the increase of the development level of the integration of urban and rural water supply, but the response of the development level of the integration of urban and rural water supply to the increase of agricultural ten thousand yuan GDP water consumption is just opposite. The comprehensive evaluation index of water resources benefits shows a trend of increase as a whole and the comprehensive evaluation index of the integration of urban and rural water supply development increases year by year in Luochuan county from 2007 to 2015 and the correlation between them is as high as 0.965. The coupling degrees between water resources benefits system and the integration of urban and rural water supply development system are all between 0.4 and 0.5 in Luochuan county and the coupling coordination degree between them increases year by year, whichdevelops from disorder stage (2007-2010) to coordination stage (2011-2015).