荒漠生态系统是指分布于干旱地区，极端耐旱植物占优势的生态系统。由于水分缺乏，植被极其稀疏，甚至有大片的裸露土地，植物种类单调，生物生产量很低，能量流动和物质循环缓慢。
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。
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.
最后，该文对水热平衡理论和研究方法、水热平衡耦合模型以及荒漠生态系统的水热结构优化模式等未来的研究方向和重点问题作了分析。
At last, the authors analyze the future research directions and research highlights, such as the theory and research methods, coupling model, and optimized water-heat structure of desert ecosystem.
生物土壤结皮广泛分布在干旱半干旱地区与寒区荒漠，是荒漠生态系统的主要组成和景观特征之一，其重要性已被大量的研究报道所证实。
Soil microbiotic crusts are widespread in arid and semiarid regions, they are one of the major components of desert ecosystems, and their importance has been demonstrated by numerous researches.
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