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1)  Biomass density
生物量密度
2)  aboveground biomass density
地上生物量密度
3)  biomass carbon density
生物量碳密度
1.
Based on the consecutive forest resource inventory data,the biomass carbon density(BCD)of dark coniferous forests(DCF)in the upper reaches of Minjiang River was calculated by using biomass expansion factors(BEF)method and its variation with age class,elevation and aspects were also examined.
利用森林资源连续清查的样地数据,基于生物量与蓄积量之间的关系模型,估测岷江上游亚高山暗针叶林地上部分生物量碳密度、碳密度年增长率及其随林龄、海拔和坡向变化的分布规律。
2.
Based on field investigation and laboratory data,spatial distribution and temporal variations of biomass carbon density(BCD) in Pinus armandi forest ecosystem in Qinling Mountains were studied in this paper.
519 8之间,顺序为叶>根>干>枝>皮;华山松林生态系统的生物量碳密度为133。
3.
Based on data in a field investigation and laboratory analysis,the spatial distribution and temporal variations of biomass carbon density(BCD) in Pinus tabulaeformis forest ecosystem in the Qinling Mountains were studied.
结果表明:碳在油松各器官中的分配以树干所占比例最大,其次为树枝,树皮最小;不同器官生物量碳密度在0。
4)  Density and biomass
密度与生物量
5)  Root biomass density
根生物量密度
6)  density [英]['densəti]  [美]['dɛnsətɪ]
生物密度
补充资料:辐照通量密度
分子式:
CAS号:

性质:又称辐照通量密度。符号为E。等于包含有考虑的位点在内的无限小面积元上照射的辐射通量或辐射功率P除以此面积元的面积(dP/dS。当在考虑的面积上的辐射功率为常数时,可简化成:E=P/S)。其SI制单位为W/m2。对于不被靶物及其环境所散射或反射的垂直入射的平行光束而言,它和积分通量功率相当。

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