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应用枝系构型理论,研究了胡杨在克拉玛依市防护林中的分枝构型的特征,并重点针对3种配置类型:胡杨(Populus euphratica Oliv.)×沙枣(Elaeagnus angustifolia L.)、胡杨×银白杨(Populus alba L.)和胡杨×白榆(Ulmus pumila L.),分析了胡杨分枝构型在不同配置中的变化。结果表明:防护绿地中胡杨不同部位(树冠)构型格局中,各级分枝长度数值和各级分枝角度数值从上到下均表现为逐渐变大的趋势;不同配置类型对胡杨构型特征(主要表现在分枝角度和分枝长度两个指标)的影响存在显著差异,影响力大小依次为胡杨×银白杨、胡杨×白榆、胡杨×沙枣。
The branching configuration of Populus euphratica Oliv. × Elaeagnus angustifolia L., Populus euphratica × Populus euphratica × Populus euphratica × Populus euphratica × Populus euphratica × Populus euphratica × Populus euphratica × Populus euphratica × Populus euphratica × Populus euphratica × Populus euphratica × Populus euphratica × Populus alba L. and Ulmus pumila L. The variations of poplar branching configurations in different configurations were analyzed. The results showed that the values of branching length at different levels and branching angles at all levels tended to become larger from top to bottom in the configuration of different parts (canopy) of Populus euphratica in the protected green areas. With the different configuration types, There were significant differences in the characteristics (mainly manifested in the two indexes of branching angle and branch length). The order of influence was Populus tomentosa × Poplar × Populus euphratica × Populus euphratica × Saussurea.