纤维素作为湖泊沉积物有机质的重要组成部分,其氧同位素组成已逐渐应用在古气候、古环境重建中。本文综述了湖泊沉积物纤维素氧同位素在古气候研究中的进展,包括纤维素的实验提取方法、纤维素及其寄宿水体之间的氧同位素分馏系数,以及纤维素氧碳同位素在定量古气候参数方面的应用,并展望了未来的研究趋势。研究表明,纤维素结合碳酸盐氧同位素组成可能是一种潜在的定量古温度指示剂,可能在未来的湖泊沉积中发挥极大作用。因此,今后的有关研究可能集中在定量古气候参数上的应用。
Cellulose is an important component of organic matter in the lake sediments,its oxygen isotope composition has been extensively used in paleoclimate and paleoenvironment reconstructions.This paper reviewed research advances of the oxygen isotope composition of cellulose,including the method of extracting cellulose from lake sediments,the isotope fractionating between cellulose and surrounding waters,and its applications of quantitative reconstructing paleoclimate parameters.Some studies had revealed that the correlation of δ18O values in cellulose and in carbonate may be a potential temperature indicator,and may play an important role in future paleoclimatic research.Therefore,studies on oxygen isotope of cellulose in the future should be centred on quantification.