滇中武定县种子植物区系  

Flora of Seed Plants in Wuding County,Yunnan

作　　者：李品荣[1] 孟广涛[1] 方向京[1] 曾觉民[2] 

机构地区：[1]云南省林业科学院,昆明 650204 [2]西南林学院

出　　处：《东北林业大学学报》2009年第3期106-108,共3页Journal of Northeast Forestry University

基　　金：国家林业公益性行业科研专项(200804019)资助

摘　　要：2000—2007年,采用系统调查和资料收集相结合的方法对云南武定县的种子植物区系进行了调查,共统计到种子植物173科、774属、1737种(包括变种、亚种和多年栽培种)。种子植物分布区类属的地理成分中,热带地理成分略高于温带地理成分,分别为364属和347属,分别占总非世界属数的51.2%和48.8%。热带地理成分中以泛热带分布及其变型所含属数最多,为154属,占总非世界属数的18.57%;温带地理成分中以北温带分布及其变型所含属数最多,为132属,占总非世界属数的21.66%,其次是东亚分布及其变型,为73属,占总非世界属数的10.27%。说明武定县植物区系不仅具有热带性质,而且具有温带性质,是二者兼容的地区,属于中国—喜马拉雅森林植物区、云南高原地区、滇中植物省,为古热带植物区系与泛北极植物区系的结合。分布区类型的组成也表明此区系古特有种丰富。A survey was conducted to study the flora of seed plants in Wuding County, Yunnan Province by systematic investigation and data collection during 2000 and 2007. A total of 1 737 species of seed plants, including variation, subspecies and cultivars, were recorded, which belong to 173 families and 774 genera. In the floristie composition of the seed plants, the tropical geographical elements （364 genera） are slightly higher than the temperate elements （347 genera）, accounting for 51.2% and 48.8% of the total genera respectively. Among the tropical elements, the genera belong to pantropical distribution and its variation are the most, which is 154 genera composing 18.57% of the total genera of non-cosmopolitan distribution. Among the temperate elements, the genera belong to temperate distribution and its variation are dominant, which is 132 genera occupying 18.57% of the total genera of non-cosmopolitan distribution, and there are 73 genera of East Asian distribution and its variation, taking up 10.27% of the total genera of non-cosmopolitan distribution. The percents of tropical and temperate distribution elements show that this flora is characterized by an interlacement of tropical and temperate floras, belonging to a mixture of Sino-Himalaya flora, old tropieal flora and panaretie flora. The components of areal types of seed plants also indicate a northern margin of subtropics in Wuding County, Yunnan Province.

关 键 词：种子植物区系 分布区类型 武定县 云南 

分 类 号：Q948.5[生物学—植物学] S718.3[农业科学—林学]