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引用本文:沈吉,张恩楼,张祖陆,孙庆义,夏威岚.山东南四湖成湖时代浅析.湖泊科学,2000,12(1):91-93. DOI:10.18307/2000.0114
SHEN Ji,ZHANG Enlou,ZHANG Zulu,SUN Qingyi,XIA Weilan.A Preliminary Study on Forming Age of the Nansihu Lake. J. Lake Sci.2000,12(1):91-93. DOI:10.18307/2000.0114
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山东南四湖成湖时代浅析
沈吉1, 张恩楼1, 张祖陆2, 孙庆义3, 夏威岚1
1.中国科学院南京地理与湖泊研究所, 南京210008;2.山东师范大学资源与环境学院, 济南250014;3.济宁市水利局, 济宁272119
摘要:
对南四湖两个沉积岩心进行了多环境代用指标分析,利用14C方法测定了沉积剖面下部年代,采用210Pb和137Cs方法测定了剖面上部沉积速率,进而确定了整个沉积剖面的时代根据沉积岩心色素指标特征、有机碳氮比值和有机碳同位素特征分析,初步确定南四湖的成湖时代为2450aBP.
关键词:  南四湖  成湖时代  山东
DOI:10.18307/2000.0114
分类号:
基金项目:国家自然科学基金(49702028);山东省自然科学基金联合资助
A Preliminary Study on Forming Age of the Nansihu Lake
SHEN Ji1, ZHANG Enlou1, ZHANG Zulu2, SUN Qingyi3, XIA Weilan1
1.Nanjing Institute of Geography and Limnology, CAS, Nanjing 210008, P. R. China;2.Depeartment of Geography, Shandong Normal University, Jinan 250014, P. R. China;3.Jining Committee of Managing Water Resources, Skangdong Province, Jining 272129, P.R. China
Abstract:
Tha Nansihu Lake has been strongly influenced by both of the Yellow River's overflow and human activities.Its forming age has not been determined for a long time.By the two sedimentary cores in the Nansihu Lake, this paper analyzed the environmenntal indexes of pigment, organic δ13C and C/N.The ages of the low parts in the cores are measured by 14C and sedimentation rate of the cores are determined by both of the 210Pb and 137Cs.Combined with the distribution of pigment, C/N and organic S13C, it can be determined that the forming age of the Nansihu lake is 2450aBP.
Key words:  Nansihu Lake  forming age  Shandong
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