Study on the Distribution of Vegetation and Soil Nutrients Along the Elevation Gradient in Lianhuashan Baipenzhu Nature Reserve
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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