天目山自然保护区典型森林植被乔木层生物量研究

Arbor Biomass in Eight Types of Forest Communities of Tianmushan National Nature Reserve

对天目山自然保护区8种典型森林类型(杉木林、马尾松林、针阔叶混交林、常绿阔叶林、毛竹林、常绿落叶阔叶混交林、落叶阔叶林、落叶矮林)进行样地调查并计算了各个森林类型乔木层林分密度、物种种类、优势树种、生物量。结果表明,生物量大小顺序为常绿落叶混交林>落叶阔叶林>针阔混交林>杉木林>常绿阔叶林>马尾松林>毛竹林>落叶矮林;在海拔1 000 m以下的5种森林类型,生物量变化不大;而在海拔1 000 m以上的3种森林类型,随海拔升高生物量下降,物种则增加。

Investigations were conducted on arbor biomass in eight types of forest communities, including Cunninghamia lanceolata, Pinus massoniana, mixed coniferous and broadleaf forest, evergreen broad-leaved forest（EBF）, Phyllostachys heterocycla cv. pubescens, mixed evergreen and deciduous broad-leaved forest （MF）, deciduous broad-leaved forest（DBF） and deciduous broad-leaved shrub in Tianmushan National Nature Reserve. Stand density, species, dominant tree species and biomass in the tree layer of different forest community types were evaluated and estimated. Results showed that biomass was as following： MF〉 DBF〉 mixed coniferous and broadleaf forest〉 C. lanceolata〉 EBF〉 P. massoniana〉 Phyllostachys heterocycla cv. pubescens 〉 deciduous broad-leaved shrub. Biomass showed little change in five types of forest communities below 1000 meters. Species richness had positive relation with elevation （above 1000 meters）, but biomass showed reveres variation.