延边地区天然赤松林生物量模型的研究

Models of Biomass for Natural Japanese Red Pine Forest in Yanbian Area

对平均年龄为４０ａ的延边地区不同密度天然赤松林的单株赤松各器官及不同组分生物量、叶面积估测模型进行了研究。结果发现模型ＩｎＷ—１＝ａ＋ｂＩｎＤ～２Ｈ＋ｃＤ～２Ｈ适合于估测不同密度级赤松林内单株赤松干、皮生物量地上部生物量，模型ＩｎＷ—２＝ａ＋ｂＩｎＤ＋ｃ·Ｄ适合于估测不同密度级赤松林内单株赤松枝、叶生物量及叶面积；采用四种生物王模型估测各器官生物量时，不同密度级赤松林均表现出基本相同的规律，即单株地上部各器官估测效果为：树干＞树枝＞树叶＞枝皮．

The estimation models of leaf area,different biomasses and organs of individual tree were studiedfor the 40 year-old Pinus densiflora with different densities in Yanbian area。The results showed:for the in-dhdual tree in natural stands with different densities,the model Inw1=a+blnD2+ CD2H was suited to esti-mate the trunk biomass,bark biomass and abeveground biomass,and the model InW2=a+bInD+C·D wassuited to estimate the biomasses of branch and leaf and leaf area;when we use four kinds of models to estimatethe biomasses of different organs,the stands of Pinus densiflora with different densities showed some regula-rities.The estimation results of each aboveground organs of individual tree were:trunk> branch> leaf> bark。