兰州大学赵艳及其合作者的研究工作证明在低海拔地区，湖泊沉积物中的孢粉可以作为很好的气候指示物。
Yan Zhao at Lanzhou University and co-workers 1 have found an alternative climate indicator for lower areas - pollen trapped in lake sediments.
生物标志化合物具有稳定、保存时限长、分布广等特点，对气候和环境有很好的指示作用。
Biomarkers have the characteristics of stable compounds, long-time preservation and wide distribution, providing great information on climatic and environmental changes.
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