北京市延庆县落叶乔木层地上部分生物量的研究

摘要

对北京市延庆县四海镇西沟里村集体林分5种落叶乔木（白桦，楸树，山杨，柞树，落叶松）进行野外调查的结果表明，该林分单木各分量生物量的最优模型均为CAR模型，各最优模型的变量主要为胸径（D）和树高（H）因子，D。H能够很好地反映树干的干重，胸径和树高能够很好地反映树枝、树叶的变化；该地区落叶乔木层生物量总量为70912．10363t。%5 kinds of deciduous trees in Beijing Yanqing country Sihai Xigouli village were field investrgation. The results showed that the optimization biomass models of various components were CAR models and the best variables were diameter at breast height （D） and height （H） which indicated the changes of branch, leaves and total weight, and the combination of D and H （D2H） showed the changes of dry weight of stem. The aboveground biomass of defoliation forest was 70912. 10363t.