滇西北丽江市中国种子植物特有种组成分析  

Composition of seed plants endemic to China in Lijiang City,Northwest Yunnan

作　　者：朱青 盛岩[1] ZHU Qing;SHENG Yan(School of Environment and Natural Resources,Renmin University of China,Beijing 100872,China)

机构地区：[1]中国人民大学环境学院,北京100872

出　　处：《浙江农林大学学报》2019年第3期479-485,共7页Journal of Zhejiang A&F University

基　　金：中国人民大学专项基金资助项目(297217000021)

摘　　要：以物种多样性较为丰富的滇西北丽江市玉龙纳西族自治县和古城区为研究区,以区域内中国特有种子植物为对象,对区域内特有种子植物物种组成、特有性及濒危状况进行研究。结果表明:①研究区中国特有种子植物资源数量较多,中国特有种107科434属1 659种,占中国特有种子植物种数的12.94%,特有现象明显;③特有种子植物的优势科、属明显,研究区内种数>49种的科共11个,所含种数占比52.93%,种数>10种的属共29属,所含种数占比38.22%,这些科和属是研究区特有植物科属的主要组成成分;③种子植物特有性突出,地方特有种众多,共有云南特有种355种,玉龙纳西族自治县和古城区特有种子植物48种;④中国特有种子植物受威胁等级植物共116种,其中极危等级物种9种,濒危等级物种28种,易危等级物种79种,占研究区所有中国特有种子植物的6.99%;玉龙纳西族自治县和古城区48种特有种子植物中易危等级物种4种,近危等级物种6种;研究区内的受威胁物种以及研究区特有物种中的受威胁物种具有重要的保护价值。To study species diversity in Lijiang City of Northwestern Yunnan Province of China, Yulong Naxi Autonomous County and Gucheng District were selected as the study area. Species composition, endemism, and extinction risk of endemic seed plants in the area were determined by taking endemic seed plants in China as research objects. Using the "database of diversity and geographical distribution" of Chinese endemic seed plants to get the basic information such as family, genus, which were located in Yulong Naxi Autonomous county and Gucheng District. Results showed that endemic seed plants were diverse and widespread, with the flora of Yulong Naxi Autonomous County and Gucheng District consisting of 1 659 species of seed plants endemic to China, accounting for 12.94% of the total species of seed plants. These 1 659 species belonged to 107 families, and 434 genera, with 11 families containing more than 49 species, for 52.93% of the total species. Also, 29 genera contained more than 10 species, accounting for 38.22% of the total species. Of the 355 species endemic to Yunnan, 48 species were endemic to Yulong Naxi Autonomous County and Gucheng District, and these families and genera were the major components of the genus of endemic plants in the study area. A total of 116 threatened plants in the study area were found, accounting for 6.99% of all Chinese endemic seed plants, with nine species classified as critically endangered(CR), 28 species classified as Endangered(EN),and 79 species classified as Vulnerable(VU) with four species being threatened, and six species being Near Threatened(NT);Thus, since threatened species in the study area and threatened species endemic to the study area have important conservation value, they should be protected.[Ch, 8 tab. 17 ref.].

关 键 词：植物学 滇西北 中国特有种子植物 物种组成 玉龙纳西族自治县 古城区 

分 类 号：S718.3[农业科学—林学] Q948.5[生物学—植物学]