Analysis of Irrigation Water Use Efficiency Based on the Chaos Features of a Rainfall Time Series
Analysis of Irrigation Water Use Efficiency Based on the Chaos Features of a Rainfall Time Series
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基于降雨时间序列混沌特征的灌溉用水效率分析
DOI：
10.1007/s11269-017-1624-7
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发表时间：
2017-03
影响因子：
4.3
通讯作者：
Cui Song
中科院分区：
文献类型：
--
作者：
Fu Qiang;Liu Ye;Li Tianxiao;Liu Dong;Cui Song
运用混沌理论分析了黑龙江省灌区灌溉水利用效率对降雨的响应机理。计算了8个大中型灌区月降雨量时间序列的李雅普诺夫指数和关联维数，分析了灌溉水利用效率与相关因子的相关性。结果表明，各地区月降雨量时间序列均表现出混沌特征，IWUE与月降雨量时间序列的混沌特征之间存在较高的相关性。灌区规模与灌溉水利用效率之间存在一定的相关性。研究结果表明，降雨时间分布的差异和灌区规模的差异都对灌溉水利用效率产生影响。该研究为提高黑龙江省灌区水资源利用效率、提高灌溉水利用效率提供了理论依据。
The chaos theory is used to analyze the mechanism behind the response of irrigation water use efficiency (IWUE) to rainfall in irrigation districts of the Heilongjiang Province in China. The Lyapunov exponent and correlation dimension of the monthly rainfall time series of eight large- and medium-sized irrigation districts are calculated, and the correlations between IWUE and certain factors are analyzed. The results indicate that the monthly rainfall time series of each district sample exhibits chaotic characteristics, and high correlations exist between IWUE and the chaos features of the monthly rainfall time series. Furthermore, the scale of the irrigation district has some correlations with IWUE. The research results show that the difference in the temporal distribution of rainfall and the difference in the scale of an irrigation district both impact IWUE. This study provides a theoretical basis for improving the usage efficiency of water resources in the irrigation districts of Heilongjiang Province and for increasing the IWUE.
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