| 引用本文: | 张振克,吴瑞金,沈吉,吴艳宏,朱育新,潘红玺.近1800年来云南洱海流域气候变化与人类活动的湖泊沉积记录.湖泊科学,2000,12(4):297-303. DOI:10.18307/2000.0402 |
| ZHANG Zhenke,WU Ruijin,SHEN Ji,WU Yanhong,ZHU Yuxin,PAN Hongxi.Lacustrine Records of Climatic Change and Human Activities in the Catchmentof Erhai Lake? Yunnan Province Since the Past 1800 Years. J. Lake Sci.2000,12(4):297-303. DOI:10.18307/2000.0402 |
|
| 摘要: |
| 对云南洱海湖泊岩芯沉积物进行了多环境指标 (年代学、色素、硅藻、有机碳稳定同位素、磁化率、化学元素)的分析,建立了近 180 0年来云南洱海流域气候与环境变化的序列,气候演化具有暖干、冷湿交替的组合特点,一些特征气候阶段如中世纪温暖期、小冰期气候特征在洱海湖泊沉积记录中均有反映.洱海湖泊沉积记录的气候暖干-冷湿交替变化规律,反映了西南季风影响下的气候演化特征.湖泊沉积记录中包含丰富的人类活动的信息,磁化率、元素Fe、色素与历史时期人类活动的强度变化过程具有较好的一致性.多环境指标的综合分析方法,可以判识人类活动和气候变化的湖泊沉积响应,对高分辨率研究 2000年时段湖泊沉积记录并合理解释环境指标变化具有重要意义. |
| 关键词: 湖泊沉积 洱海 气候变化 人类活动 |
| DOI：10.18307/2000.0402 |
| 分类号: |
| 基金项目:中国博士后基金、国家自然科学基金(49672132)与中国科学院创新工程重大项目(KZCX1-Y-05)资助项目. |
|
| Lacustrine Records of Climatic Change and Human Activities in the Catchmentof Erhai Lake? Yunnan Province Since the Past 1800 Years |
|
ZHANG Zhenke1,2, WU Ruijin2, SHEN Ji2, WU Yanhong2, ZHU Yuxin2, PAN Hongxi2
|
|
1.Departmentof Geo and Ocean science, Nanjing Un iversity, Nanjing 210093, P.R.China;2.Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, P.R.China
|
| Abstract: |
| Based on the results of multi-environmental proxies (chronology,pigment s diatom concentration,stable isotope of organic carbon magnetic susceptibility chemicalelement) of lake sediment from Erhai Lake Yunnan Province, the series of climatic variations in the catchmentof Erhai Lake during the past 1800 year's has been established. The climatic changes with warm-dry and cold-wet alternations in Erhai Lake are different to the loess records in East Asia monsoon with warm-wet and cold-dry features. The characteristic periods such as the medieval warm period and Little Ice Age are both recorded in the lake sediments from Erhai Lake. The climatic characteristics with warm-dry and cold-wet alternation from the lacustrine records in Erhai Lake have the regional feature in Yunnan Plateau affected by southwest monsoon on the century scale. The lake sediment from Erhai Lake is rich with information of human activities.The proxies such as magnetic susceptibility chemical element-Fe,pigments have close relationship with the human activities during the historical period. The method of multi-environmental proxies analysis is useful to determine the response of climatic changes and human activities? which has important significance for the research as well as rational explanation on the high-iesolution records of lacustrine sediment in the past 1800 years. |
| Key words: Lake sediment Erhai Lake climatic changes human activities |
