Based on the data of water resources bulletin,we adopted the methods of linear trend fitting and Mann-Kendall mutation test,analyzed the present situation and evolution characteristics of water use in the Gansu section of Yellow River basin in 2001-2020.The results showed that the average annual water consumption in Gansu section in Yellow River basin is about 4.22×109m3 from 2001 to 2020,with an average annual decrease of 1.17％and a rapid downward trend after 2014.Agriculture was the first largest water consumption sector,the industry the second,and other sectors were residential,ecological and urban public water.About 80％of the agricultural water consumption accounting for the total water consumption decreased by 0.28％annually,and about 10％industrial water consumption accounting for the total water consumption decreased by 5.6％annually.About 10％of the residents'living,and ecologi-cal and urban public water consumption increased by 0.87％,13.73％and 4.88％respectively.The analy-sis of influencing factors showed that changes in industrial water consumption and rural residents'water consumption had been the main factors affecting the decrease of total water consumption.
关键词
流域水资源/用水结构/Mann-Kendall突变检验/黄河流域甘肃段
Key words
basin water resource/water use structure/Mann-Kendall mutation test/Gansu section of Yel-low River basin
万方数据