元宝山冷杉群落特征的初步研究

元宝山冷杉仅分布于广西融水县元宝山．元宝山冷杉群落为常绿针阔混交林，上层林木主要是松科植物，中、下层以樟科、茶科、杜鹃花科、壳斗科为主．元宝山冷杉群落现存大树基本上都是老龄树，林内有少量幼苗，但很难见到中龄林木，因此，元宝山冷杉种群年龄结构不完整，将被常绿阔叶树取代．

LIMINARY STUDY ON PHYTOCOENOLOGICAL CHARACTERS OF ABIES YUANBAOSHANENSIS COMMUNITY

Abies yuanbaoshanensis is only found on Yuanbaoshan mountain in Yongshui county,Guangxi.The resykts of phytocoenological analysis show that Abies yuanbaoshanensis community is an evergreen needle-leaved and broad-leaved mixed forest. In the community the tree species of upper layer are species of Pinaceae and the predominant of middle and lower layer are species of Lauraceae, Ericaceae, Fagaceae. In the Abies yuanbaoshanensis community forest,there are a few seedlings and old trees but without saplings and middle aged trees, so the age structure of Abies yuanbaoshanensis population is not complete and will be replaced by the evergreen broad-leaved trees in community.