摘要
在野外调查、标本鉴定以及文献资料查阅的基础上，运用植物区系地理学研究方法，对秦岭地区的豆科植物区系进行了分析。结果表明：1）秦岭地区共有豆科植物57属172种5亚种8变种，其中自然分布的种有44属144种5亚种6变种，生活型以草本和灌木为主，主要分布在海拔500~2000m的混交林带；2）该区的豆科植物区系成分复杂，具有较强的温带性质，含有温带属27属，占总属数的61．4％，温带分布种76种，占总种数的49．1％，中国特有种67种，占总种数的43．2％，中国特有种的分布类型体现了秦岭豆科植物区系与川滇地区的亲缘关系；3）秦岭豆科植物区系具有明显的过渡性，从秦岭南坡到北坡由亚热带性质向温带性质过渡，从秦岭西段到东段由中国一喜马拉雅植物成分向中国-日本植物成分过渡；4）通过与黄土高原、中国帕米尔高原、长白山、南岭及横断山区的豆科植物组成比较，发现秦岭豆科植物区系与黄土高原相似性最高，与帕米尔高原相似性最低。
According to field investigation, specimens and literature, a catalog of Leguminosae in Qinling Mountains was created. Based on this catalog, the floristie characteristics of Leguminosae was analyzed through the floristic geography research method. The results were reported as following. 1） The Leguminosae in this flora consists of 8 varieties, 5 subspecies, 172 species, 57 genera, in which there are 44 genera, 144 species, 5 subspecies, 6 varieties native. 2） The geographical elements of the legume flora are comparatively complex. The temperate character is obvious, accounting for 61.4% of the total genera （in- cluded of 27 genera） and 49.1% of the total species （including 76 species）. In the process of analyzing the distribution pattern of China-endemic species, it was found that the legume flora in Qinling Mountains presented some affinities with those in Sichuan-Yunnan region. 3） The legume flora has obvious transition properties, mainly reflected in two aspects： the flora from south slope to north slope is transitional from subtropical nature to temperate nature, on the other hand, the flora from the western to the eastern is transitional from Sino-Himalaya（SH） component to Sino-Japan（SJ） component. 4） The comparison of leguminous floristic composition between Qinling Mountains and the Loess Plateau, Pamirs of China, Changbai Mountain, Nanling, Hengduan Mountains show that, Qinling Mountains has the higher similarity coefficient whit the Loess Plateau than with others, and the lower similarity coefficient with Pamirs of China.
出处
《西北林学院学报》
CSCD
北大核心
2014年第4期80-86,共7页
Journal of Northwest Forestry University
基金
国家自然科学基金(30870155
30270106
31300158)
关键词
秦岭
豆科
植物区系
Qinling Mountains
Leguminosae
floristic
