华北落叶松单木生物量模型研究

Study on Single Tree Biomass Model for Larix Principis-rupprechtii

以山西省华北落叶松为研究对象,通过样地调查与全株解剖测定各器官的生物量,采用相对生长方程y=axb(CAR)估测单木生物量及各器官生物量的分布规律。结果显示,总生物量、树干生物量、树枝生物量、树叶生物量、树根生物量的模型分别为lnW_T=0.824 7 ln(D^2H)-1.866 3,lnW_S=0.837 9 ln(D^2H)-2.831 9,lnW_B=0.882 2ln(D^2H)-3.902 1,lnW_L=0.765 9 ln(D^2H)-4.017 4,lnW_R=0.824 7 ln(D^2H)-3.649 7.

The biomass of each organ of Larix principis-rupprechtii in Shanxi province was determined by the method of sam- ple-plot survey and whole plant anatomy. Single tree biomass and its distribution regularities of each organ were estimated by relative growth equation y = ctxb （CAR）. Resuhs showed that the total biomass model was lnW, = 0. 823, 7 In（DEH） - 1. 866 3, stem biomass model was lnWs = 0. 837 9 in （D2H） - 2. 831 9, branch biomass model was lnWB = 0. 882 2 In （D^2H） -3.902 1, leaf biomass model was lnWL =0. 765 9 ln（D^2H） -4. 017 4 and root biomass model was lnWa = 0.824 7 in（D2H） - 3. 649 7.