第四纪以来塔里木河流域对罗布泊的钾离子输运量

Transportation of potassium from rivers surrounding Tarim Basin to Lop Nur since Quaternary

研究塔里木盆地周边河流对罗布泊盐湖的盐分补给,对于研究罗布泊盐湖钾盐物质来源具有重要意义。文章在分析前人对塔里木盆地气候、温度、径流量变化等研究的基础上,分别根据竺可桢近5000年的古温度曲线、青藏高原古里雅冰芯δ18O记录的古气候变化及六盘山朝那黄土剖面磁化率记录的古温度变化,得出了近5000年、12万年、200万年的温度变化,并根据温度-径流量变化模型,估算了塔里木河流域三源流在研究时段内的径流总量。根据径流总量和河水中的K+浓度,估算了第四纪200万年以来塔里木河流域河水对罗布泊钾离子的输运量。

Research on the salt supply from rivers surrounding Tarim Basin to the Lop Nut is important to the study oI the origin of potassium. Based on the research on climate, temperature and runoff in Tarim Basin, the palm- temperature curve of the past 5000 years established by Zhu Kezhen, the paleo-dimate change recorded by 8180 of Guliya ice core and the magnetic susceptibility of the Liupan Mountain, the authors determined the tempera- ture variations in the past 5 000 years, 120 000 years and 2 million years respectively. According to the tempe- rature change, the authors calculated the total runoff of the Tarim rivers, and estimated the transportation of potassium