Abstract:

In the systems for classifying vegetations,the three primary classes:vegetation-type-formation-association and the two subsidary classess,the subvegetation-type and formation-group,are applied in this article.Forests of subtropical evergreen broad-leaf trees whit species of Fagaceae,Lauraceae,Magnoliaceae,Theaceae and others belong to "evergreen broad-leaf forests in Yunnan represents the western type of the subropical region of China,This type is divided into three subvegetation-types:semihumid,monsoonal and mountain humid evergreen broad-leaf forest.

摘要：

常绿阔叶林是指由壳斗科、茶科、樟科、木兰科的常绿阔叶树种为主组成的森林，但不包括常绿阔叶的热带雨林和常绿阔叶的山地硬叶林。常绿阔叶林主要分布在亚热带较湿润的气候条件下，所以也称之为“亚热带常绿阔叶林”。我们在植被文献中所见到的“照叶林”、“樟”、“常绿栎类林*”、“亚热带山地雨林”、“亚热带常绿季雨林”等等，都属于这一类森林范围。当然，它也应包括含有温带落叶成分的常绿阔叶林。亚热带常绿阔叶林虽然在世界植被中并不太突出，但在我国境内却是一个十分重要的植被类型。它遍布我国极其广泛的南方区域，是我国亚热带地区的地带性植被。

关键词: 阔叶林, 类型, 云南