| 引用本文: | 蔡永立,章薇,过仲阳,陈宇,陈中原.孢粉-气候对应分析重建上海西部地区8.5 ka B.P.以来的气候.湖泊科学,2001,13(2):118-126. DOI:10.18307/20010204 |
| CAI Yongli,CHEN Zhongyuan,ZHANG Wei,GUO Zhongyang,CHEN Yu.Cl imate Fluctuation of the Western Shanghai District by Correspondence Analysis since 8.5 ka B.P.. J. Lake Sci.2001,13(2):118-126. DOI:10.18307/20010204 |
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| 摘要: |
| 利用现代和化石孢粉资料,借助于对应分析方法,进行了古气候定量重建尝试.取自中国东部区域的表土层孢粉数据被用来建立孢粉-气候转换函数.对取自上海青浦县赵巷有14 C测年的钻孔孢粉数据进行转换,重建了上海地区8.5 ka B.P.以来年均温度和降雨量系列.结果表明:约8.5 ka B.P.以来,本区温度和降雨量持续升高,约8.2-6.0 ka B.P.期间为全新世气候适宜期,年均温和降水量值平均高于现今值0.9℃和160mm,约8.0 ka B.P.达到最高值(温度和降雨量为18.5℃和1575mm);但气候波动剧烈;约6.0-4.0 ka B.P.期间为温凉干燥期,气候波动平缓,年均温度和降雨量平均低于现今值,最低值为13.5℃和827mm(4.1 ka B.P.);约4.0-2.0 ka B.P.期间温度和降水回升,但暖湿程度远不及全新世大暖期.2.0 ka B.P.以来温度和降雨又呈下降趋势.8.0 ka B.P.、7.6 ka B.P.和2.7 ka B.P.前后的出现高温高湿峰值,7.5 ka B.P.、7.3 ka B.P.和4.0 ka B.P.前后出现低温低湿谷值.气候变化对本区古文化的发展可能有重要影响 |
| 关键词: 上海地区 孢粉 对应分析 古气候重建 |
| DOI：10.18307/20010204 |
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| 基金项目:国家自然科学基金(49971011);教育部博士点基金;上海市科委学科带头人基金资助 |
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| Cl imate Fluctuation of the Western Shanghai District by Correspondence Analysis since 8.5 ka B.P. |
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CAI Yongli1, CHEN Zhongyuan2, ZHANG Wei2, GUO Zhongyang2, CHEN Yu2
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1.Department of Environmental Science, East China Normal University, Shanghai 200062, P. R. China;2.Open Research Laboratory of Urban an d Environmental Remote Sensing Archeology, Shanghai 200062, P. R. Ch ina
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| Abstract: |
| This paper deals with the use of correspondence analysis as an aid in paleoclimatic reco nst ruction based on modern and fossil pollen data.Modern pollen data from surface samples, ref lecting present vegetation ty pes across the eastern part of China, w ere used to set up pollen-climate transfer functions.The transfer functions were then applied to pollen-stratigraphic data from dated sediment core of Qingpu County of Shanghai to reconstruct the paleoclimate of Shang hai since 8.5 ka B.P..Result shows that since 8.5 ka B.P.the mean temperature and the precipitation had been increasing, betw een approximately 8.2-6.0 ka B.P., the paleoclimate becoming warmer and humid with high fluctuation, the maximum values of temperature and precipitation were 18.5℃ and 1575mm respectively;from 6.0 ka B.P.to 4.0 ka B.P., the climate was cool and dry, with the minimum value 13.5℃ and 827mm;during 4.0-2.0 ka B.P., it became warm and more humid;follow ed by tendency of cool and drier.The paleoclimatic change played an important role in the development of Neolithic culture in this area. |
| Key words: Shang hai pollen correspondence analysis paleoclimatic reconst ruction |
