In order to understand the changes of elevation distribution pattern of vegetation diversity in the north slope of Lianhua Mountains,the communities of evergreen broad-leaved mixed forest from 200m to 900m above sea level in Lianhuashan Baipenzhu Provincial Nature Reserve were studied.The distribution of plant di-versity,forest carbon storage and soil nutrients along the altitude gradient were revealed by investigating the vegetation diversity and measuring soil nutrients in the permanent sample plot.The results show that:(1)On the whole,the number of trees and the growth rate increased significantly with the elevation.(2)The species rich-ness,diversity and evenness of plant community gradually increased at 200m～400m,remained at a high level and then slowly decreased at 400m～700m,and significantly decreased above 700m.(3)Carbon storage per hectare of trees showed a"low-high-low"level,and reached a peak at about 500m above sea level,reaching 143 t/hm2,which was significantly higher than that in 2017.(4)The soil was acidic,and the contents of SOM,TN,TP,TK,AN,AP and AK increased with elevation.
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