关键词: 用水结构, 信息熵, 均衡度, 水资源管理, 玉溪市

Abstract: Based on C.E Shannon entropy theory, the water use structure of Yuxi City in Yunnan Province is analyzed by information entropy and equilibrium index. According to the analyzed result, the optimization suggestions are put forward. The analysis results show that the annual water use in Yuxi City is 0.86533 billion m3, and the water used in agriculture, industry, livelihood and ecology account for 59.0%, 28.7%, 10% and 2.8% respectively. The total water used poses a fluctuated downward trend, the same to water use of agriculture and industry. However, it shows a slowly upward trend for domestic water use and a disorder trend in ecology. In general, the information entropy and equilibrium index of water use structure of the whole city vary in a way of increasing at first then decreasing and slowly increasing again. The water use structure is developing to an equilibrium state. The information entropy differences of various counties (districts) are small, showing a balanced regional water use structure.

Key words: water use structure, information entropy, equilibrium, water resources management, Yuxi City