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引用本文:陈萍,何报寅,远藤邦彦,杜耘,李世杰.洪湖人类活动的沉积物记录.湖泊科学,2004,16(3):233-237. DOI:10.18307/2004.0307
CHEN Ping,HE Baoyin,Kunihiko Eudo,DU Yun,Li Shijie.Records of Human Activities in Sediments from Honghu Lake. J. Lake Sci.2004,16(3):233-237. DOI:10.18307/2004.0307
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洪湖人类活动的沉积物记录
陈萍1, 何报寅1, 远藤邦彦2, 杜耘1, 李世杰3
1.中国科学院测量与地球物理研宄所, 武汉430077;2.日本大学文理学部地球科学系, 东京, 日本;3.中国科学院南京地理与湖泊研宄所, 南京210008
摘要:
对洪湖150cm长的沉积物样芯进行了TOC、TN、TP、Ca、硫化物测试和AMS定年, 在此基础上对洪湖地区人类活动的湖泊沉积响应进行了讨论.TOC和TN的含量呈现相似的变化规律, 它们在样芯顶部和底部都出现显著峰值, 而中部变化平坦, 表示1500年来洪湖环境变演的三个显著不同的阶段;TP从过去到现在总体呈上升的趋势, 但上升的幅度不大, 这与磷在沉积物中复杂的循环机制有关;Ca的剖面变化显示为底部含量高上部低, 其变化情况较复杂;硫化物在顶部15cm的含量比背景值略高, 可能指示了上个世纪人类对铁矿和矿物燃料开采强度的增大.
关键词:  洪湖  沉积物  人类活动
DOI:10.18307/2004.0307
分类号:
基金项目:中国科学院知识创新工程重大项目(KZCX1-SW-12-1);中国科学院知识创新工程重要方向项目(KZCX2-SW-110)
Records of Human Activities in Sediments from Honghu Lake
CHEN Ping1, HE Baoyin1, Kunihiko Eudo2, DU Yun1, Li Shijie3
1.Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan 430077, P.R..China;2.Department of Geosystem Sciences, Nihon University, Tokyo, Japan;3.Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, P.R.China
Abstract:
Basing on the measurements for contents of TOC, TN, TP, Calcium and sulfide and AMS dating of sediment from Honghu Lake, we discussed the response of human activities in the lake sediment.The variations of TOC, TN are agreed with each other.They all appear as a remarkable peak value both on the top and bottom of the core, while flat in the midst.This indicates that the environmental change history of Honghu Lake can be divided into three distinct stages in recent 1500 a.TP generally ascend from past to present, but the extent of rise is not remarkable.This can be related to its complicated cycling mechanism in sediment.The profile of Calcium shows higher in the bottom lower in the top, its variation is complicated.The contents of sulfide on the top 15 cm is higher than the background, this possibly indicates the increase of mining intensity of iron ore and fossil fuel in the last century.
Key words:  Honghu Lake  sediment  human activities
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