楚雄州城市化进程与水资源利用关系定量分析

The relationship between the process of urbanization and water consumption of Chuxiong Prefecture

以楚雄州为研究对象,采用综合指标法计算城市化进程参数,并利用相关分析和回归分析对城市化进程与水资源利用关系进行研究。结果表明:随着城市化的发展,总用水量、农业用水量及工业用水量呈波动性变化,生活用水量则呈逐年增加趋势,用水效益也呈逐年上升趋势。通过回归分析发现,总用水量、农业用水量、人均总用水量与城市化水平之间存在三次函数关系;工业用水量与城市化水平之间存在较为紧密的幂函数关系;人均生产用水量、用水效益与城市化水平呈二次函数关系;生活用水量及人均生活用水量与城市化水平之间则存在高度紧密的线性正相关关系。15年间年均变化率最大为生活用水量,其次为人均生活用水量,年均变化率最小为人均生产用水量。最后,针对楚雄州现状提出几点建议。

With the methods of correlation and regression analysis, the relationship between urbanization and urban water resource utilization of Chuxiong Prefecture was studied. The results show that total water consumption, industrial water consumption and agricultural water consumption were all fluctuated with the process of urbanization, while domestic water consumption and water usage effi- ciency increased year by year. Regression analysis suggests that there exists a cubic - functional rela- tionship between urbanization and total water consumption, and so are the relationships between ur- banization and agricultural water consumption as well as relationship between urbanization and per capita water consumption. A power functional relationship is witnessed between industrial water con- sumption and urbanization. And a quadratic functional relationship exists between per capita produc- tion water consumption and urbanization and so is the relationship between water usage efficiency and urbanization. There is a highly linear correlation between urbanization and domestic water consumption, as well as the relationship of urbanization and per capita domestic water consumption. In the past 15 years, domestic water consumption ranks highest in terms of the annual average change rate and is followed by per capita domestic water consumption and per capita production water consumption. Some suggestions are proposed based on the present situation of Chuxiong Prefecture.