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鄂陵湖浅层深2m的冻结湖相沉积物中埋藏植物屑保存完好，植物屑均来源于同一种沉水植物——龙须眼子菜（Potamogetonpectinatus）。碳同位素分析结果表明，剖面中该植物屑的δ13C值在－17.67‰～－11.39‰间变化，比该地生长的陆生植物高。根据δ13C值的变化特征，将湖相沉积分为三个阶段，相应δ13C平均值分别为－16.68‰、－14.48‰和－12.28‰，由下而上呈降低的趋势。沉水植物光合作用中碳同位素分馏的分析表明，沉水植物的δ13C值同水中溶解无机碳的浓度有关，从而与影响其改变的各种因素相关。因此，鄂陵湖湖相沉积物中埋藏植物屑的δ13C特征记录了该地过去环境变化的信息。
The plant debris buried in the shallow lake sediments of 2 m deep in Eling Lake is well conserved, and the plant debris are all from the same submerged plant Potamogetonpectinatus. The results of carbon isotope analysis showed that the δ13C value of the plant debris varied from -17.67 ‰ to -11.39 ‰ in the profile, higher than that of the terrestrial plants grown in the area. According to the variation characteristics of δ13C, the lacustrine deposits are divided into three stages, and the corresponding δ13C average values are -16.68 ‰, -14.48 ‰ and -12.28 ‰, respectively, showing a downward trend from bottom to top. The analysis of carbon isotope fractionation in submerged macrophytes shows that the δ13C value of submerged macrophytes is related to the concentration of dissolved inorganic carbon in water, which is related to various factors that affect the changes. Therefore, δ13C features of plant debris buried in the sediments of Eling Lake recorded the past environmental changes.