A dynamic division scheme of agro-climatic production potential for winter wheat in Beijing, Tianjin and Hebei Province

A new dynamic division scheme of the agro-climatic production potential for winter wheat was proposed by means of combination of a cluster analysis of statistic test (CAST) and rotating principal component analysis (RPCA) in the Hebei province (including Beijing and Tianjin). The results obtained from the new scheme are consistent with the real observational data obtained at each station. It has been shown that the new climatic division of production potential has universality and comparability, which is suitable for crop yielding estimation in different areas. Furthermore, the results show different inter-annual variations in the different areas and this implies that the new division scheme is more reasonable.