萨吾尔-塔尔巴哈台山地与周围植物区系相似关系的分析

萨吾尔－塔尔巴哈台山地地处准噶盆地西北部，地理位置特殊，处于中亚、亚洲中部、西伯利亚几大植物区系的边缘地带，过渡特征明显。本文应用了１２种相似系数公式，按集合论中求交集的方法，对该区与周围地区（天山、阿尔泰山、哈萨克斯坦和内蒙古）进行了相似性关系的比较，结果表明：萨吾尔－塔尔巴哈台山与阿尔泰山植物区系间相似关系最为密切，并与天山共同形成关系密切的区系组合，与内蒙古植物区系关系较为疏远，证明本区为南

An Analysis on the Resemblant Relationships Between the Florae in Saur-tarbagatai Mountains and Surrounding Places

Saur tarbagatai mountain range lies on the northwest of Jungar Basin,where the geographical position is special on the edge of the florae of Central Asia,Mid Asia and Siberia.Obviously,this flora has transitional characteristics.The resemblant relationships between this place and four other adjacent regions Tianshan mountains,Altay mountains,Kazakhstan and Inner Mongolia were analysed by using 12 formulae of similarity coefficients and discussed according to the method of calculating the cross set in the set theory.The result shows that the florae of the Saur tarbagatai mountains and Altay mountain had a closest resemblant relationship,and these florae maintained a close link with the flora of Tianshan mountains.There were obvious differences between the flora of Saur tarbagatai mountain range and that of Inner Mongolia.It proves that the flora of Saur tarbagatai mountain range is the passageway between the south flora and the north flora,and it has a little interflow with the flora of Inner mongolia.