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- W2392295094 abstract "【Objective】This paper studied the influence of stand density on species diversity of undergrowth of Pinus tabulaeformis plantation in Xiaolongshan area,to put forward an appropriate stand density.【Method】Five types of 30 years stand density were selected,and the law of important values,species richness,species diversity index,evenness index and similarity coefficient changing with stand density were analyzed.【Result】① There were 50 vascular species in 38 families and 23 genus of undergrowth in P.tabulaeformis.As stand density increased,species number decreased,and the composition of shrub and herb changed.②Species richness,Shannon-Wiener,Simpson index in shrub layer and herb layer deceased.③Correlation coefficient analysis showed that the stand density had some relationship with species richness and the evenness index of herb layer,which had significantly negative correlation with the stand density.④ As stand density increased,the total forest loss of species,and similarity index gradually decreased.【Conclusion】Analysis showed that stand density did have influence on species diversity,but the influence was no significant.When stand density was 1717-1 867 plant/hm2,species diversity index except that Alatalo reached the highest,which indicated that the density was more appropriate for growth and development of understory vegetation,and can contribute to an increase in forest diversity." @default.
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- W2392295094 date "2010-01-01" @default.
- W2392295094 modified "2023-09-23" @default.
- W2392295094 title "Study on the species diversity of undergrowth in the different stand densities of Pinus tabulaeformis plantation of Xiaolongshan area" @default.
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