闽粤栲群落凋落物持水量与其结构的定量分析

对南平市郊林场封山育林近熟期不同坡位闽粤栲群落凋落物持水量与其结构关系进行了定量分析.结果表明:每公顷凋落物干重、每公顷凋落物持水量均与乔木层和群落优势度呈显著正相关关系,均与灌木层优势度呈显著负相关关系,均与草本层优势度关系不密切,均与乔木、灌木和草本层(各层)和群落物种数、香农—威纳指数、均匀度指数和生态优势度(物种多样性指数)关系不密切;每吨凋落物持水量与乔木层物种数、香农—威纳指数、均匀度指数呈显著正相关关系,与乔木层生态优势度呈显著负相关关系,与灌木层、草本层和群落物种多样性指数之间关系不密切,与各层和群落优势度关系不密切.

The Quantitative Analysis Between the Water-holding Capacity of the Litter in Castanopsis fissa Community and Its Structures

The quantitative analysis between the water holding capacity of the litter in Castanopsis fissa community and its structures in different slopes in near mature stage under forest enclosing and tending in shijiao forestry farm of nanping city was analyzed in this paperThe results indicated that the water holding capacity of the litter per hectare、the dry litter weight per hectare were both significantly positively correlated with dominances in tree layer or in the community,were both significantly negatively corrected with dominance in shrub layer,but were both no significantly correlated with dominance in herb layer,were both no significantly correlated with species diversity indexes(species numbers and Shannon Weinner index and evenness index and ecological dominance) in every layer(in tree layer and in shrub layer and in herb layer) or in the community;there was a significant relation between the water holding capacity of dry litter per ton and species number or Shannon Weinner index or evenness index in tree layer,but correlation analysis indicated that the water holding capacity of the litter per hectare was significantly positively correlated with ecological dominance in tree layer,was not significantly correlated with species diversity indexes in shrub layer or in herb layer or in the community,was not significantly correlated with dominances in every layer or in the community