Study on Community Structure Characteristics and Species Diversity of Main Forest Types in Luoshan National Nature Reserve of Ningxia
In order to explore the forest community structure characteristics and plant species diversity in Luoshan National Nature Reserve of Ningxia,four major forest communities(Picea crassifolia forest,Picea crassifolia-Pinus tabulaeformis forest,Pinus tabulaeformis forest and Populus davidiana forest)were investigated and analyzed by using the typical plot method.The results showed that:① a total of 58 plant species were recorded,belonging to 27 families and 39 genera.② The diameter distribution of the tree species exhibited a reversed J shape and a skewed normal distribution,while the tree height structure showed a normal distribution,indicating a stable growth pattern for the communities.③ The forest communities consisted of tree layer,shrub layer,and herb layer.The richness index,Simpson dominance index,Shannon-Wiener diversity index,and Pielou evenness index of each layer ranked as follows:shrub layer>herb layer>tree layer.The differences between the layers were not significant(P>0.05).The plant diversity index between the tree layer and shrub layer was significantly different(P<0.05),while no significant difference was found in the herb layer(P>0.05).
Luoshan National Nature Reserve of Ningxiaforest typecommunity structurespecies diversity
国家科技期刊平台
NSTL
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