哈纳斯自然保护区植被特点及植物区系形成的探讨

Diagnosis on the Characters of the Vegetation and the Flora in Kanas,Altai

哈纳斯自然保护区的植被充分反映了欧洲——西伯利亚区系成分的特色。山地针叶林带与天山相比显著下降，为阴暗泰加林类型。植被类型丰富多样，与天山的植被特点迥然不同。本区植物区系形成于第四纪。其区系组成以温带成分为主，并含有少量的古地中海成分。以本土发生的安加拉区系成分为主体；发源于华夏地台的亚洲温带成分渗透至本区；

The vegetation of Kanas natural reserve,Altai of Xinjiang is characterized by the Euro sibirian flora in nature Since the latitute north ward and the mountain coniferous forest is subsided down,the lower limit of the forests in Kanas is lower than those in Tianshan The coniferous forest is belonging to the taiga ones,and the types of the vegetation is more diversed than that of Tianshan too The flora of the research region was began at Quaternary composed principally of the temperate flora,which mostly came from sibirian flora,and accompanied with anciant Tethysian relics,and the composition of the northwest China dispersed northward too,and arrived here as its north limit