华北落叶松林生物量与生物多样性关系研究

The relationship between biomass and biodiversity in the forest of Larix principis-rupprechtii

以河北省木兰林管局境内华北落叶松人工林为研究对象,在采用标准地调查方法取得主要林分因子调查数据的基础上,利用ForStat统计软件,建立了华北落叶松人工林生物多样性与生物量关系模型。结果表明:未成林造林地,灌木与草本生物量与生物多样性呈正相关关系;幼龄林林木分化尚不明显,生物量与林分密度呈线性关系,符合y=0.005 1x+4.334 3,R2=0.842 7;幼龄林物种丰富度在25左右时生物量达到最大;近熟林生物量与生物多样性呈正相关。

The research was on the plantation of Larix principis-rupprechtii at Mulan Forestry Adminstration Bureau of Hebei Province.On the basis of the main survey data which we got using the method of sample preparation,the relational model between the biomass and biodiversity of the plantation of Larix principis-rupprechtii was estaalished using the statistical software of ForStat.The results showed that： shrub and herb had a positive correlation between the biomass and biodiversity in the land of not-established forest;the biomass and stand density also had linear relationship in young forest for the stand is not canopy.The formula was y=0.005 1x＋4.334 3,R2=0.842 7;the biomass is maximum biomass when the species richness on 25 in young forest;there was a positive correlation between the biomass and biodiversity in the near-mature forest.