【摘要】 根据环洞庭湖防护林的森林群落和树种分布特点,在研究区域共设置122个典型样地,样地根据气候区、立地条件、林分类型、群落结构、林龄等因素综合布设,实测样株生物量,利用树木各部分生物量之间存在相关关系,以树高、胸径为变量构建各分量生物量模型通式,共构建了马尾松、白栎、杨树、枫香、刺槐5个主要建群种生物量模型,模型结构为W=a(D2H)b。模型测算因子简单易得,各模型均具有较好的拟合精度和预估水平。更多还原

【Abstract】 Based on properties of forest community and species distribution of protection forest system around Dongting Lake,122 typical sample plots were set up according to the climatic region,site conditions,stand types,community structure and age composition of stands,and the biomasses of standard trees were surveyed in these plots.Biomass models for each indicator of trees were established taking tree height and DBH as variables.Totally 5 biomass models for Pinus massoniana,Quercus fabri,Populus,Liquidambar formosana,Robinia pseudoacacia were established with model structure of W=a(D2H)b,which were fabulous with advantages of simple indicators,high fitting precision and high estimation level.更多还原