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Human impact recorded in the sediment of Honghu Lake, Hubei, China
作者姓名:YAO Shu-chun  XUE Bin  XIA Wei-lan
作者单位:[1]Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China [2]Graduate School of CAS, Beijing 100039, China
基金项目:中国科学院资助项目;国家重点基础研究发展计划(973计划)
摘    要:Vertical profiles of the total organic carbon (TOC), total nitrogen (TN), phosphorus, susceptibilities, elements and partical size were analyzed in a short ^137Cs-dated sediment core collected from Honghu Lake, China. The average sedimentation rate was 1.55 mm/a. The results indicated that trophic status of Honghu Lake in the historical period had experienced three stages. Before 1840 the lake was characterized with lower productivity, TOC was less than 9.92 g/kg; TN was 0.902 to 1.24 g/kg. During about 1840-1950, population increased quickly, there was an obvious change in TOC with an average of 13.0 g/kg. Since 1950, human impacts have accelerated the lake eutrophication and nutrients enriched in the sediment with TOC of 21.7 to 93.1 g/kg, TN of 1.77 to 8.78 g/kg. The heavy metal concentration profiles presented similar distribution trends except Pb .and Mn. The results from elements analyses indicated that Honghu Lake had not been polluted by heavy metals except lead.

关 键 词:洪湖  堆积物  人为影响  湖北  水体污染
文章编号:1001-0742(2006)02-0402-05
收稿时间:2005-06-20
修稿时间:2005-08-29

Human impact recorded in the sediment of Honghu Lake, Hubei, China
YAO Shu-chun,XUE Bin,XIA Wei-lan.Human impact recorded in the sediment of Honghu Lake, Hubei, China[J].Journal of Environmental Sciences,2006,18(2):402-406.
Authors:YAO Shu-chun  XUE Bin and XIA Wei-lan
Institution:1. Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China;Graduate School of CAS, Beijing 100039, China
2. Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China
Abstract:Vertical profiles of the total organic carbon (TOC), total nitrogen (TN), phosphorus, susceptibilities, elements and partical size were analyzed in a short 137Cs-dated sediment core collected from Honghu Lake, China. The average sedimentation r
Keywords:Honghu Lake  lake deposit  human impact
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