不同封山育林阶段闽粤栲群落物种多样性特征

The Characteristics of Species Diversity in Different Stages in Castanopsis fissa Communities Under Forest Enclosing and Tending

对福建南平不同封山育林阶段闽粤栲群落物种多样性特征进行了分析.结果表明:封山育林幼龄期闽粤栲群落乔木层物种数、总个体数、物种多样性指数、均匀度均比封山育林近熟期闽粤栲群落的大,但生态优势度却相反;封山育林幼龄期闽粤栲群落灌木层物种数、总个体数、生态优势度均比封山育林近熟期的大,但物种多样性指数和均匀度却相反;封山育林幼龄期闽粤栲群落草本层物种数、物种多样性指数、均匀度均比封山育林近熟期闽粤栲群落的大,但总个体数、生态优势度却相反.

Characteristics of species diversity in Castanopsis fissa communities in different stages under forest enclosing and tending in Nanping city of Fujuan province was analyzed in this paperThe results showed that:the numbers of species,total number of individuals,index of species diversity,and evenness of community in tree layer in young stand stage were larger than those in nearmature stand stage,but ecological dominance had an opposite trend;in young stand stage,the numbers of species,total number of individuals,and ecological dominance of community in shrub layer were larger than those in nearmature stand stage,but index of species diversity and evenness showed an opposite trend;the numbers of species,index of species diversity,and evenness of community in herb layer in young stand stage were larger than those in nearmature stand stage,but total number of individuals and ecological dominance had an opposite trend