论文部分内容阅读
应用放射性同位素~(137)Cs和~(210)Pb测年法,在1985年枯水期测定了鄱阳湖的沉积速率。全湖21个取样点的沉积速率为0.5—7.0mm/a,平均为3.2mm/a。主湖区为1.0—3.2mm/a,平均为2.1mm/a。研究表明,各湖区之间、各取样点之间,沉积速率随水文、地理和地貌不同而有较大差异。还预测了鄱阳湖今后可能的演变趋势。
The sedimentation rate of Poyang Lake was measured in the dry season of 1985 by using radioactive isotope (137) Cs and ~ (210) Pb dating methods. The lake 21 sampling points deposition rate of 0.5-7.0mm / a, with an average of 3.2mm / a. The main lake area is 1.0-3.2mm / a, with an average of 2.1mm / a. The research shows that the sedimentation rate varies greatly between hydrological, geographical and geomorphological aspects among the lakes and between sampling points. It also predicted the possible evolution of Poyang Lake in the future.