摘要
在分析河南省不同经纬度的9个县市(安阳、三门峡、郑州、卢氏、西华、南阳、驻马店、信阳和固始)1961～2002年的气象数据的基础上,对参考作物腾发量旬值的变化特征进行分析,并用时间序列法建立了相应的随机模拟模型。结果表明:各地区ET0的变化呈非增加趋势,周期项可用6阶傅里叶基数很好地描述,随机项可建立AR或者ARMA模型进行描述。本研究为河南省的各个地区的农田灌溉工作提供科学的依据。
Based on the analysis on the meteorological data from 1961 -2002 of 9 cities （Anyang; Sanmenxia; Zhengzhou; Lushi; Xihua; Nanyang; Zhumadian; Xinyang and Gushi ） located at various longitudes and latitudes in Henan Province, the variation features of the ten days-values of the reference crop evapotranspiration are analyzed herein, and then the relevant sto- chastic simulation model is established with the time series analysis method. The result shows that the variation of ETo in all the regions concerned presents an unincreased tendency ; of which the periodic items can be expressed with Fourier series, while the stochastic items can be described by establishing the AR or ARMA models as well. The study can provide a scientific basis for the farmland irrigation of all the regions in Henan Province.
出处
《水利水电技术》
CSCD
北大核心
2010年第10期65-69,共5页
Water Resources and Hydropower Engineering
基金
农业部作物需水与调控重点开放实验室基金(CWRR200908)
重大水专项(008ZX07209-002)资助
华北水利水电学院高层次人才科研启动项目(200918)
关键词
参考作物腾发量
傅立叶级数
随机特性
时间序列分析
农田灌溉
河南省
reference crop evapotranspiration
fourier series
stochastic characters
time series analysis
farmland irrigation
Henan Province
