The primary biomass of the grassland community decreased with increasing grazing intensity.
较大的放牧压力下，群落中适口性差、耐牧的杂类草植物渐趋 增加。
The primary biomass used for surfactant production usually is as follows: cellulose, lignin, starch, chitin, oil and fat and pine oleoresin(an exudate of pine trees) and so on.
开发表面活性剂的生物质资源有纤维素、木质素、淀粉、甲壳素、油脂和松脂等。
The prediction of current primary forest showed that it was steady during the next 300 year period, the number of trees and the biomass of Korean pine changed very little.
对现实原始林预测显示，森林未来300年变化稳定，红松株数和生物量变化很小。
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