中文摘要：

通过对罗布泊地区红柳沙包沙物质粒度的测试和分析得出 如下基本结论：沉积纹层沙物质中细沙粒含量最多,占58.3～73.5%;其次为粗粉粒,占10.9～23.0%,粗粘粒、细粉粒和粗沙粒都较少,分别为3.8～6.4%、2.8～5.3%和3.3～11.3%。各纹层沙物质的粒径、分选系数、偏态值和峰态值等参数相对一致,粒度分布曲线和粒级概率累积曲线相似。150年来罗布泊地区环境没有出现剧烈的变化。

英文摘要：

By testing and analysis on grain - size of Tamarix Cone in Lop Nur region, the general conclusions have been obtained as follows： the content of fine sand is the most, accounting for 58.3 -73.5% , the second is thick power sand, accounting for 10.9 - 23.0% , the thick clay sand, fine power sand, and thick sand are less, accounting for 3.8 - 6.4% , 2.8 - 5.3% , and 3.3 - 11.3% respectively. In every sedimentary veins, the grain - size, coefficient of sorting, skewness, and kurtosis, as well as grain - size distributed curve and accumulated probability curve are similar. In recent 150 years the environment in Lop Nut region has not changed acutely.