新疆乌恰野生维管束植物区系的初步研究

Floristic analysis of vascular plants in Wuqia Xinjiang

通过实地考察和查阅相关文献资料,对分布于乌恰地区的植物从区系组成、区系性质的角度进行了分析.结果表明,该地区共有野生维管束植物68科285属641种.其中,蕨类植物3科3属6种,裸子植物3科3属12种,被子植物62科279属623种.按照吴征镒先生对中国种子植物所划分的15个分布区类型,对所整理和统计的野生种子植物进行地理成分分析表明,该地区分布的植物可归入12个分布区类型和14个变型.其中北温带分布的属、种最多,计95属259种,占该地区植物总属、种数的40.25%和53.40%,表明温带属性是该地区植物区系的基本特点.与此同时,该地区植物区系与地中海—西亚—中亚及旧世界温带交流最多,其次与热带有一定的交流,而与温带亚洲和东亚交流很少.此外该地区植物区系中包含着新疆特有植物23种之多.

Through the investigation and consulting related literatures, the author ana lyzed the plants of the area from the point of floristic composition and features. The result shows that there are 68 families, 285 genera and 641 species of wild vascular plants, among which there are 3 families,3 genera and 6 species of fern;there are 3 families,3 genera a and 12 species of gymnosperm;there are 62 families,279 genera of angiosperm. According to Mr. Wu Zhengyis＇ classification of the 15 d terns of seed plants in China, the analysis on the geographical dements of shows that the plants distributing in this area can be classified into 12 d of which and 623 species istribution pat the seed plants istribution pat are north tern- perate genera,including 95 genera and 259 species,making up 40.25% and 53.40% re spectively of the total plant genera and species in the area. This indicates the temperate zone property to be the basic characteristic of the flora in the area. Meanwhile, most interflows between the flora in this area with that in the Mediterranean, Western Asian, Central Asian and the old World temperate area, some interflows with the tropical flo- ra, and few ones with the temperate Asian and Eastern Asian flora have been found. Flora in the region include the 23 endemic species in Xinjiang.