用车贝雪夫多项式预报气象产量地理分布的试验

SOME APPLICATIONS OF CHEBYSHEV POLYNOMIALS IN FORECASTING THE DISTRIBUTION OF METEOROLOGICAL YIELDS

中文摘要:

      本文以辽宁省中北部地区玉米气象产量区域分布的预报为例,论述了车贝雪夫多项式在农业气象预报中的若干应用。作者用不规则格点上的车贝雪夫多项式,以大气环流为候选预报因子,求得展开式系数依赖于4-6个因子的方程,并由此报出区域各县产量,绘出预报图,作试报检验。结果表明:车贝雪夫多项式可用于区域产量预报。最后讨论了此方法在农业气象预报其他领域(如发育期、病虫害预报)中的应用前景,指出车贝雪夫多项式用于生物学、地学预报中的意义。

英文摘要:

      In this paper, the authors have described the applications of Chebyshev polynomials in forecasting the geographical distribution of meteorological yields of maize crop in the Central-Northern region of Liaoning Province. By using Chebyshev polynomials on irregular grids and basing on 60 candidate predictors for atmospheric circulations 12 statistical equations were obtained. By means of these equation, the meteorological yields for thirteen stations in this region were forecasted. The results show that Chebyshev polynomials are applicable to regional forecasting of crop yields. We have also the opinion that Chebyshev polynomails can, be used in other fields of agrometeorological.forecasting (such as phenological stage, and pest forecastings).