本文对2.5年生和3.5年生巨桉纸浆原料林的生物量和生产力进行了测定和研究。
In this paper, the biomass and productivity of 2.5-year and 3.5-year old Eucalptus grandis were studied.
本文对会同10年生和11年生第二代杉木人工林的生物量和生产力进行了测定和研究。
In this paper, the biomass and productivity of 10-year and 11-year old second generation Chinese fir plantation in Huitong County were studied.
密度大的林分，生物量和净生产力也大。
The stand of big density has a larger quantity of living beings and net productivity.
通过对样地水曲柳天然林的各器官生物量的测定和化学元素分析，研究了生物生产力及营养元素的积累与分布规律。
The accumulation and distribution rule of productivity and nutrient element were studied by determining the biomass and chemical element in different organs above ground of sample trees.
利用森林蓄积量推算森林生物量和净生产量的方法，系统研究了我国森林植被的生物生产力。
Method for estimating biomass and net production of forest vegetation from stem volume of stand was proposed in this paper, and biological production all over China was estimated by using this methed.
生物量则是衡量草原生产力大小的标准之一，代表了生态系统利用物质和能量的能力。
Biomass is one of the criteria on measuring productivity of grassland, which represents the capacity of ecosystem on utilizing materials and energy.
生物量则是衡量草原生产力大小的标准之一，代表了生态系统利用物质和能量的能力。
Biomass is one of the criteria on measuring productivity of grassland, which represents the capacity of ecosystem on utilizing materials and energy.
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