江西省用水结构变化及影响因素分析

Analysis of water use structure variation and its influence factors for Jiangxi province

根据江西省1999～2016年共18年的用水量数据,分析了农业、工业、生活和生态环境用水结构的变化,采用信息熵的方法对江西省用水结构变化的趋势进行了分析,总结了影响各类用水量变化的因素.结果表明:(1)江西省总用水量呈波动上升趋势,农业用水量呈波动略微上升趋势,工业用水量呈明显的波动上升趋势,生活用水量呈直线上升趋势,生态环境用水量呈稳中有升趋势;(2)从信息熵演化和均衡度的角度来看,江西省水资源开发利用结构向着更均衡、更稳定的方向发展;(3)影响江西省用水结构变化的因素是多样的,包括降水量、灌溉面积、工业增加值、万元工业增加值用水量、总人口、人均生活用水量、城镇化率及政府和民众对生态环境的重视等.

The structure changes of agricultural,industrial,domestic and eco-environmental water uses in Jiangxi province were analyzed according to the water use data from 1999 to 2016.The information entropy method was adopted to analyze the water structure change tendency of Jiangxi province.And then the influence factors of the changes of different water uses were summarized here.The results showed that：（1）generally speaking,the total water use of Jiangxi province showed a fluctuated upward trend,the agricultural water use showed a fluctuated slightly upward trend,the industrial water use showed an obvious rising trend,the domestic water use showed a linear growth trend,while the eco-environmental water use showed a steady rising trend;（2）the development and utilization structure of water resources in Jiangxi province evolves towards a more balanced and stable direction from both the information entropy evolution and the equilibrium degree perspectives;（3）the influence factors of water structure change in Jiangxi province are varied,including precipitation,irrigation area,industrial value-added,water use per ten thousand Yuan of industrial value-added,total population,water use per capita,urbanization rate and the attention to the ecological environment from the government and the public,etc.