摘要
时间序列分析是研究灌区退水量演化规律的重要方法。采用时序图和自相关图相结合的方法,以宁夏青铜峡灌区为实例,对大型灌区的日退水量时间序列进行了分析,确定了大型灌区日退水量时间序列的非平稳特性和1阶2步差分平稳性,为灌区退水量的准确预报提供了理论依据。
Time series analysis is an important method to study the evolution of irrigation return water. Timing diagram and self-correlation diagram approach were used, taken Ningxia Qingtongxia Irrigation areas as an example, which determined the time series of return water had non-stationary and first-order two-step difference stationarity features, which provided a theoretical basis for an accurate prediction of return water.
出处
《安徽农业科学》
CAS
北大核心
2010年第3期1381-1382,共2页
Journal of Anhui Agricultural Sciences
基金
江西省教育厅青年科学基金项目(GJJ09610)
南昌工程学院青年基金项目(2008KJ002)
关键词
退水量
时间序列
平稳性
Return water
Time series
Stationary ieatures
