| 引用本文: | 王云飞,夏威岚,潘红玺,胡守云,杨世蓉.淮河中游本世纪气候与环境波动的湖泊记录证据.湖泊科学,1998,10(2):52-57. DOI:10.18307/1998.0209 |
| Wang Yunfei,Xia Weilan,Pan Hongxi,Yang Shirong,Hu Shouyun.Sedimentary Records of Clim atic and Environmental Fluctuation of M iddle Reaches of Huaihe River in This Century. J. Lake Sci.1998,10(2):52-57. DOI:10.18307/1998.0209 |
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| 摘要: |
| 为研究本世纪淮河中游气候与环境波动的湖泊沉积响应,1991秋季在女山湖湖心提取了4.8m沉积物.对顶部20cm沉积物运用210Pb、137Cs的年代定位,获得1904-1991年湖泊沉积物的年序.以此通过高分辨沉积记录的代用标志提取,重建了本世纪女山湖气候与环境的变化过程.结果表明,本世纪最初20-30年女山湖地区温度偏低、湿度偏大；40、50年代为本世纪温度最高的时段,50至60年代中期为延续最长的偏湿时段.温度在60年代一度降低.70年代中期后回升并以正偏为主.其干湿在60年代中期后变化频繁,但80年代中期以后又趋暖湿. |
| 关键词: 沉积记录 气候与环境波动 1904-1991年 女山湖 |
| DOI：10.18307/1998.0209 |
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| 基金项目:国家自然科学基金（49271068） |
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| Sedimentary Records of Clim atic and Environmental Fluctuation of M iddle Reaches of Huaihe River in This Century |
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Wang Yunfei1, Xia Weilan1, Pan Hongxi1, Yang Shirong2, Hu Shouyun1
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1.Lake Sedimentation and Environment Lab.,Nanjing Institute of Geography and Limnology, CAS, Nanjing 210008;2.Nanjing Institute of Geology & Palaeotology, CAS, Nanjing 210008
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| Abstract: |
| The history of climatic and environmentaI fluctuation of Nushan Lake in this centurv is reconstructed based on the data of high—resolution climatic and environmental proxies of the lake sediments and the time series of 1 904 1991 buildt up by Cs and apb dating The results suggest that during the beginning 20—30 years of this century,there was lower tem perature and higher humidity in Nushan Lake area. Then,in the period of the 1940 1950’S, the temperature reached to the maximum, hut cooled down in the 1960’s and warmed up after 1970.After then,the hum idity changed freguently until the middle of the 1980’S,when the climate in the area became a 1ittle humid again. It iS noticeable that the above conclusions coincide with that from the deta of historicaI and instrum entaI records of this area. S0 the method used here can provide evidences for reconstruction of climate and environment change on a short tim e scale of lack—instrumental records area. |
| Key words: Sedimentary records clim atic and environmental fluctuation l904-1991a Nushan Lake |
