摘要
经调查,对云南省元江自然保护区硬叶常绿阔叶林种子植物科、属、种的组成,分布区类型,区系特征等进行了统计和分析。结果表明:(1)元江自然保护区硬叶常绿阔叶林内计有种子植物47科、91属、103种。(2)该群落种子植物科、属、种的热带成分与温带成分之比分别为15?1、10.38?1、7.58?1;其热带程度虽逐级降低,但仍然表现出很强的热带性质。其在科级和属级单位上热带性质的分布型均以泛热带成分(包括变型)占主导地位;在种级单位上占首要位置的是热带亚洲分布(包括变型)。(3)该群落种子植物区系表现出一定的古老性和次生性。(4)该群落种子植物特有种类型较丰富,中国特有种有15种,云南特有种2种,元江特有种有1种。
The plant components, distribution types and floristic characteristics of ever-green hard and broad leaved forests in Yuanjiang Nature Reserve were studied. The results are as follows： 1） There are 47 families, 91 genera and 103 species of seed plants in ever-green hard and broad leaved forests in Yuanjiang Nature Reserve; 2） The proportion of tropical to temperate of family, genus and species were 15 ： 1, 10. 38 ： 1 and 7.58 ： 1 respectively, the main floristic feature is tropical, Pan tropical elements are dominant in family and genus levels, tropical Asia distribution hold the dominant position in species and variety levels; 3） The flora was ancient and secondary; 4） The endemism within the flora is rich, there were 15 species endemic to China, 2 species endemic to Yunnan and 1 species endemic to Yuanjiang.
出处
《西部林业科学》
CAS
2008年第2期40-46,共7页
Journal of West China Forestry Science
基金
国家重点基础研究发展计划(973)项目(2003CB415102)
元江自然保护区综合科学考察项目共同资助
关键词
元江自然保护区
硬叶常绿阔叶林
种子植物区系
Yuanjiang Nature Reserve
ever-green hard and broad leaved forest
seed plant
flora
