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通过对青海省共和盆地达连海干湖盆中的137Cs和粒度样品的测定，结合区域调查结果及其他相关资料的分析，确定了两个137Cs蓄积峰和一个蓄积谷，由此建立了达连海湖相沉积物的137Cs时标，即1963年的137Cs最大蓄积峰和20世纪80年代末至90年代初大规模土地开垦引起的、与异常剧烈风沙沉积有关的137Cs最小蓄积谷，以及1994年的湖泊干涸事件形成的次一级137Cs蓄积峰，并估算出达连海1963年以来的平均沉积速率，依据不同时间区间的沉积速率的差异，可以将沉积过程划分为三个阶段，即1963～1990年间、1994～1998年间的两段慢速沉积期和1990～1994年间的快速沉积期。初步研究结果显示，137Cs对区域环境变化及人为活动的干扰作用具有较为理想的示踪意义。
Through the determination of 137Cs and size samples in the Dalian Haiganhu basin in the Gonghe Basin, Qinghai Province, with the analysis of the regional survey results and other relevant data, two 137Cs accumulation peaks and one accumulation valley were determined. Thus, The 137Cs time scale of the sediments in the lake and lakes, the largest 137Cs peak in 1963 and the 137Cs minimum valleys related to the abnormally severe aeolian deposition caused by large-scale land reclamation in the late 1980s and early 1990s, According to the difference of sedimentation rates in different time intervals, the deposition process can be divided into three stages, namely, 1963 ~ 1990, two slow depositional periods from 1994 to 1998, and a rapid depositional deposition from 1990 to 1994. The preliminary results show that 137Cs has an ideal tracing significance to regional environmental changes and human activities.