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通过长白落叶松种源试验的结果,揭示了长白落叶松的地理变异规律与模式。主要特点是:呈现纬向为主,经向为辅,经纬双重正向的渐变模式。影响长白落叶松地理变异的主导气候因子是温度,其次为水份。利用长白落叶松种源生长与其环境因子线性相关显著的性状,采用主分量分析方法,将长白落叶松划分成四大种源区,即白刀山种源区(编号Ⅰ)、小北湖种源区(编号Ⅱ)大石头种源区编号(Ⅲ)、和白河种源区(编号Ⅳ)。
Through the results of the provenance experiment of Larix olgensis, the rules and patterns of the geographical variation of Larix olgensis were revealed. The main features are: showing the main zonal direction, supplemented by the meridian, dual positive and negative gradient pattern. The dominant climatic factor affecting the geographical variation of L. lanceolata is temperature, followed by water. Using the principal component analysis method, the Larix olgensis was divided into four provenance areas, namely, Baodishan provenance (No. Ⅰ), Xiaobeihu provenance Area (No. Ⅱ) Boulder provenance area (Ⅲ), and Baihe provenance (No. Ⅳ).