J Integr Plant Biol ›› 1994, Vol. 36 ›› Issue (4): -.

• Research Articles •    

The Classification of Natural Types and the Charateristic Discriminatory Analysis of Pinus tabulaeformis in Shanxi

Li Wen-rong, Zhao Wei-zhong, Guo Jin-ping and Li Wu-wei   

Abstract: According to the main criteria for classifying the natural types of Pinus tabulaeformis Carr. are the size of crown and the thickness of bark. The communities of Pinus tabulaeformis in Lingkong mountain in Shanxi are divided into two types—the narrow crownthin bark-type and the wide crown-thick bark-type. The Fisher' s discrimination analysis was used to verify the accuracy of the classification. The discriminant was Y=0.0653X1-4.0369X2+0.0126X3 and the criterion was Yc= –0. 3668. The reliability was to 90% in F test and it was effective to divide the natural types with discrimination analysis. In relating the morphological variation with the character of fast-growing, the increment of trees had been measured and analysed. The results showed that there were genetic differences between the two types, and the narrow crown-thin bark-type was significantly a better one of Pinus tabulae f ormis.

Key words: Pinus tabulaeformis, Variation of morphology, Natural types, Discriminatory analysis

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