摘要
以青海省祁连圆柏群落为研究对象,采用样地调查为主并结合样线调查为辅的调查方法,调查了德令哈市、泽库县、兴海县、乌兰县、都兰县、祁连县以及互助县等7个市(县)42块样地的圆柏群落种子植物,在此基础上,采用植物区系地理的方法,分析了该群落种子植物区系特征。结果表明:青海省祁连圆柏群落共有种子植物41科136属258种,以菊科、蔷薇科、毛茛科、豆科等植物为主,含1种的属和2~4种的属丰富;多年生草本有171种,占绝对优势(66.28%)。科的分布区类型有4个,以世界分布为主;属的分布区类型有12个,温带成分的属最多,有100属,占总属数的88.50%。中国特有属3属;中国特有种106种,以青藏高原特有为主,兼有华北、西南–华北、西南成分,青海特有仅开张龙胆1种。互助县祁连圆柏群落种子植物最丰富,德令哈市最贫乏;泽库、互助、兴海群落区系组成较相似,德令哈、都兰、乌兰群落区系组成较相似。青海省祁连圆柏群落种子植物区系组成较丰富;温带性质显著;中国特有属贫乏,中国特有种较丰富,但本地特有种贫乏;不同区域祁连圆柏群落种子植物组成及属间相似性存在差异。
Taking the Juniperus przewalskii community in Qinghai Province as the research object,the survey method is mainly based on sample plot survey and supplemented by sample line survey,the seed plants of 42 sample plots of J.przewalskii community in Zeku County,Xinghai County,Delingha City,Wulan County,Dulan County,Qilian County and Huzhu County were investigated,on this basis,the method of floristic geography was used,and the flora characteristics of the community seed plants were analyzed.The results show that there are 41 families,136 genera,and 258 species of seed plants in community.The main plants are Asteraceae,Rosaceae,Ranunculaceae,and Fabaceae,with abundant genera with 1 species,and with 2−4 species;there are 171 species of perennial herbs,occupying an absolute predominance(66.28%).There are 4 areal-types of families,mainly distrib-uted around the world;There are 12 areal-types of the genera,100 genera belonged to temperate elements,accounting for 88.50% of the total number of genera.There are 3 genera endemic to China;there are 106 species endemic to China,mainly endemic to the Qinghai-Tibet Plateau.They had both North China,Southwest-North China,and Southwest components.Only 1 species of Gentiana aperta is endemic to Qinghai.Huzhu County has the most abundant seed plants,and the least in Delingha City.The communities of Zeku,Huzhu,and Xinghai are similar in composition,and Delingha,Dulan,and Wulan are similar in composition.The seed plant flora of J.przewalskii community in Qinghai Province is rich;temperate nature is remarkable;Chinese endemic genera are poor,Chinese endemic species are abundant,but native endemic species are poor;the composition of seed plants and the similarity among genera of J.przewalskii community in different regions are different.
作者
李智华
郝家田
文妙霞
胡云云
刘超
刘欢
王含予
向安民
Li Zhihua;Hao Jiatian;Wen Miaoxia;Hu Yunyun;Liu Chao;Liu Huan;Wang Hanyu;Xiang Anmin(Key Laboratory of Ecological Hydrology and Disaster Prevention in Arid Regions,Northwest Surveying and Planning Institute of National Forestry and Grassland Administration,Xi'an Shaanxi 710048,China;Xi'an Lvhuan Forestry Technology Service Company,Xi'an Shaanxi 710048,China)
出处
《西南林业大学学报（自然科学）》
CAS
北大核心
2024年第2期69-76,共8页
Journal of Southwest Forestry University：Natural Sciences
基金
国家林业和草原局计划项目(LC–2–12)资助。
