不同密度杉木林对地表枯落物层储量和林下植被的影响

Effects of Stand Densities on the Forest Litter Layer Reserves and Undergrowth Vegetation in Cunninghamia lanceolata Plantations

通过对不同密度的杉木近熟林林下植被和地表枯落物储量进行调查分析。结果表明,杉木林下植被的生长发育与林分密度密切相关,主要表现在随着林分密度降低,林下灌草层的物种丰富度和生物量显著提高;地表枯落物层储量也与林分密度有关,其随着林分密度增大,呈不断增高趋势。

In this paper the undergrowth vegetation and forest litter layer reserves of Cunninghamia lanceolata near-mature plantations with different stand densities were surveyed and analyzed. The results showed that the growth and development of the undergrowth vegetation was closely related with the stand densities mainly in the significant increase of species richness and biomass along with the decrease of stand densities; the forest litter layer reserves were also relevant to the stand density with a constantly increasing trend following the increase of the stand density.