基于混沌理论的水资源时空变异性  

Research on space-time variability of water resources based on chaos theory

作　　者：代涛[1] 邵东国[1] 黄显峰[1] 

机构地区：[1]武汉大学水资源与水电工程科学国家重点实验室,湖北武汉430072

出　　处：《武汉大学学报（工学版）》2007年第5期15-19,24,共6页Engineering Journal of Wuhan University

基　　金：国家重点基础研究发展计划项目(编号:2003CB415206);湖北省自然科学基金计划重大项目(编号:2007ABD007)

摘　　要：针对复杂水资源系统径流与灌溉需水的时空变异与尺度转换问题,以南水北调中线水源区汉江中下游地区为例,采用功率谱法、饱和关联维数法和最大Lyapunov指数法等,分析了该区多个水文站点日、旬、月流量过程和灌区旬、月灌溉需水过程的混沌特性,并提出了基于混沌理论的来用水过程时间尺度转换方法,经典型水文站点与灌区实证计算分析,证明了所提方法的合理可行性,为今后水资源系统复杂性问题深入研究提供了科学依据.Aiming to the questions of space-time variability and the scale switch of the runoff and irrigation water requirement in complex water resources system, several different methods are applied to the middle and lower reaches of the Hanjiang River, such as the power spectrum method, the saturated correlation dimension method and the largest Lyapunov exponent method, to analyze the chaotic characteristics of difference scale time series of runoff and irrigation water requirement. And a scale switch method of inflow and water use time series on chaos theory is employed. The results show that the method is reasonable and feasible; and which affords technique support for the further research on the complexity questions of water resources system.

关 键 词：水资源系统 灌溉需水量 混沌特性 尺度转换 

分 类 号：TV212[水利工程—水文学及水资源]