Desert ecosystem takes on sparse vegetation and small biomass, changes with climate factors especially sensitive in precipitation, and it is particularly important for its conservation.
表明荒漠生态系统植被稀疏，生物量小，对气候因子，特别是降水变化敏感，对其保育显得尤为重要。
The relationship between the fluctuation period of biomass and the various environmental factors was discussed.
讨论了生物量波动周期与多种环境因子的相关性。
The classification of biomass gasification technologies, the characteristics of gasifiers, the influencing factors of gasification performance and the evaluating indicator are reviewed.
综述了生物质气化技术的分类、气化炉特点、气化性能影响因素及评价指标。
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