摘要
利用山东省22个及河南省4个气象观测站点1961—2011年的逐年降雨资料,创建泰森多边形降雨分布模型,并借助多项式拟合曲线法和反距离加权插值法等分析方法,对山东省降雨时空分布特征进行深入研究。结果表明:近50年来,山东省降雨量在空间上呈显著的梯度变化,从东南部向西北部逐渐递减;并具备一定的年代、年际变化特征,总体呈现出先减少后增加的趋势。
Using 22 meteorological stations in Shandong Province and 4 meteorological stations in Henan Province during 1961--2011 annual rainfall datas to create voronoi diagram rainfall distribution model, and with the help of a polynomial fitting curve method and inverse distance weighted interpolation analysis methods ,such as to conduct the thorough research to the rainfall temporal and spatial distribution characteristics in Shandong Province.Results showed that in the recent 50 years,rainfall in Shandong Province were significant on the space change of gradient,from southeast to northwest gradually decreased ; and had a certain age,interannual variability, the overall showed an increasing trend decreased first then increased.
出处
《现代农业科技》
2016年第2期230-232,共3页
Modern Agricultural Science and Technology
关键词
降雨
分布模型
时空分布
山东省
rainfall
distribution model
temporal and spatial distribution
Shandong Province
