摘要
【目的】查清祁连山国家公园青海片区种子植物区系特征,为该片区植物资源的保护与利用提供科学依据。【方法】采用线路调查并结合样方调查的方法,统计种子植物信息,分析植物区系的组成、优势类群与表征类群及地理成分。【结果】(1)祁连山国家公园青海片区共有野生种子植物71科340属1 058种,分别占青海省种子植物科、属、种总数的75.53%、61.04%、42.37%,含有100种及以上的大科仅有菊科Asteraceae和禾本科Poaceae,未发现30种及以上的大属,科、属组成多样。(2)优势现象明显,表征类群突出。该区种子植物区系优势科有10科,优势属有23属,表征科有8科,表征属有20属,其中有3科既是优势科又是表征科,9属既是优势属又是表征属。(3)种子植物科的分布区类型有6个,其中温带成分共有23科,占总科数的67.64%;属的分布区类型有13个,温带成分共有246属,占总属数的86.32%。(4)特有科、属贫乏。未发现中国特有科,特有属有10属。(5)多种区系成分交汇、渗透并特化,并具有年轻性。【结论】祁连山国家公园青海片区种子植物种类较丰富,地理成分多样,温带性质显著。
[Objective] This study aims to identify the floristic characteristics of seed plants in Qinghai area of Qilian Mountain National Park, so as to provide scientific basis for the protection and utilization of plant resources in this area. [Method] Using the method of route survey and sample survey, the seed plant information was collected, and the floristic composition, dominant groups, characteristic groups, and geographical components were analyzed. [Result](1) There were 1 058 species(including infraspecific taxa)of wild seed plants belonging to 340 genera and 71 families, which accounted for 75.53%, 61.04%, 42.37% of the total families, genera and species of seed plants in Qinghai Province respectively. Asteraceae and Poaceae were the only big families with more than 100 species, but no big genera with more than 30 species were found.The families and genera were diverse in composition.(2) The dominant phenomenon was obvious, and the characteristic taxa were prominent. There were 10 dominant families, 23 dominant genera, and 8 characteristic families, and 20 characteristic genera, among which 3 families were both dominant families and characteristicfamilies, and 9 genera were both dominant genera and characteristic genera.(3) There were 6 areal types of seed plant families, including 23 families of temperate components, accounting for 67.64% of the total families.There were 13 areal types of genera, and 246 genera with temperate components, accounting for 86.32% of the total genera.(4) Endemic families and genera were poor. There were no endemic families and 10 genera in China.(5) A variety of flora elements intersected, infiltrated and specialized, and were young. [Conclusion] Qinghai area of Qilian Mountain National Park is rich in seed plant species. The geographical composition is diverse and the temperate nature is remarkable. [Ch, 8 tab, 24 ref.]
作者
金万洲
卜静
罗惠文
李清顺
JIN Wanzhou;BU Jing;LUO Huiwen;LI Qingshun(Northwest Surveying,Planning and Designing Institute,National Forestry and Grassland Administration,Xi’an 710048,Shaanxi,China;Key Laboratory of National Forestry and Grassland Administration on Ecological Hydrology and Disaster Prevention in Arid Regions,National Forestry and Grassland Administration,Xi’an 710048,Shaanxi,China)
出处
《浙江农林大学学报》
CAS
CSCD
北大核心
2022年第2期289-296,共8页
Journal of Zhejiang A&F University
基金
青海省省级财政支农资金(2019-03)。
关键词
青海片区
祁连山国家公园
种子植物
植物区系
地理成分
Qinghai area
Qilian Mountain National Park
seed plants
flora
geographical composition
