湖北兴山县种子植物区系特征与垂直分布格局研究  

Floristic characteristics and altitudinal patterns of seed plants in Xingshan County

作　　者：徐玉洋 李亭亭[1,2] 李果 汪正祥[1,2] 杨启池[1,2] 林邦俊 张贺贺 李玲 XU Yuyang;LI Tingting;LI Guo;WANG Zhengxiang;YANG Qichi;LIN Bangjun;ZHANG Hehe;LI Ling(College of Resource and Environmental Science,Hubei University,Wuhan 430062,China;Hubei Province Key Laboratory of Regional Development and Environment Response,Wuhan 430062,China;Institute of Ecological Environment,Chinese Research Academy of Environmental Sciences,Beijing 100012,China)

机构地区：[1]湖北大学,资源环境学院,武汉430062 [2]区域开发与环境响应湖北省重点实验室,武汉430062 [3]中国环境科学研究院,环境生态科学研究所,北京100012

出　　处：《生态科学》2020年第1期27-32,共6页Ecological Science

基　　金：生态环境部“生物多样性保护专项—湖北兴山县野生高等植物物种多样性本底调查与评估”;国家自然科学基金(41471041)

摘　　要：根据2016年-2017年对兴山县全域进行网格调查所获取的3450份野生种子植物标本,结合相关标本馆馆藏标本数据,对兴山县域种子植物区系特征与垂直分布格局进行了研究。结果显示,兴山县共有野生种子植物145科705属1883种。在科级水平上主要以热带分布型为主,共有63科,占总科数的43.45%;属级水平上温带分布型占据优势地位,共有379属,占总属数的53.76%。兴山县种子植物区系特征兼具有温带性质和热带亲缘,过渡性特征明显,区系成分复杂。种子植物在垂直分布上主要呈现为三大类:在海拔100-1000 m范围内主要形成低山常绿落叶阔叶混交林;在海拔1000-1900 m范围内以中山落叶阔叶林为主;海拔1900-2500 m范围内形成亚高山灌丛。总体来看,兴山县种子植物在海拔700-1300 m的中海拔地区物种最为丰富。The floristic characteristics and vertical distribution pattern of seed plants in Xingshan County were studied based on the combinative data of 3450 plant specimens collected from the whole region of Xingshan County from year of 2016 to 2017 with the grid investigation method,and the specimen information obtained from several herbaria.The results showed that there were 1883 species of wild seed plants in Xingshan County,belonging to 145 families and 705 genera.At the family level,the plant flora were dominated by the tropical taxa,with 63 families taking up 43.45%of the total families;at the genus level,the temperate distribution pattern occupied the dominant position,with 379 genera accounting for 53.76%of the total genera.The seed plant flora of Xingshan County had the characteristics of both temperate and tropical components,implying an obvious characters of transition.The vertical distribution of seed plants was divided into three categories,with evergreen and deciduous broad-leaved mixed forest dominating in the low mountain areas ranging from altitude of 100 m to 1000 m,broadleaved deciduous forest dominating in the middle mountains ranging from altitude of 1000 m to 1900 m,and shrubs dominating in the subalpine regions ranging from altitude of 1900 m to 2500 m.On the whole,the seed plants in Xingshan County had the most abundant species in the middle elevation area ranging from 700 m to 1300 m.

关 键 词：植物区系 垂直分布 植物多样性 种子植物 兴山县 

分 类 号：Q948.5[生物学—植物学]