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| 鹤庆深钻孢粉记录揭示的气候变化与西南季风演化 | |
| 引用本文： | 肖霞云,沈吉,王苏民,肖海丰,童国榜.鹤庆深钻孢粉记录揭示的气候变化与西南季风演化[J].古生物学报,2009,48(2). |
| 作者姓名： | 肖霞云 沈吉 王苏民 肖海丰 童国榜 |
| 作者单位： | 1. 湖泊与环境国家点实验室,中国科学院南京地理与湖泊研究所,南京210008 2. 哈尔滨师范大学地理系,哈尔滨,150084 3. 中国地质科学院水文地质环境地质研究所,正定,050803 |
| 基金项目： | 国家自然科学基金，国家杰出青年科学基金，湖泊与环境国家重点实验室开放基金联合资助 |
| 摘 要： | 本文在鹤庆深钻孢粉分析的基础上,把各孢粉类型划分成不同的孢粉生态组,结合孢粉多样性指数,系统重建云南鹤庆地区2.78 Ma以来的占气候演化所经历的8个大的阶段,与西南季风在滇西北地区8次大的变化相对应:即在2.729-2.608Ma和0.118Ma-11.83ka BP期间,气候整体湿润,冬、夏季降水的季节性较强,反映西南季风相对较强盛;1.447-0.342Ma期间,气候整体逐渐变湿,冷暖、干湿变化幅度逐渐变大,气候组合特征逐渐变复杂,反映西南季风逐渐增强,其波动幅度也逐渐变大,并于0.991-0.342Ma期间达到最强盛,其波动幅度也最大;而在2.780-2.729Ma、2.608-1.447Ma和0.342-0.118Ma期间,气候普遍相对温暖干旱,西南季风相对较弱. |
| 关 键 词： | 孢粉生态组 气候变化 西南季风 2.78 Ma以来 鹤庆盆地 |
CLIMATIC CHANGE AND EVOLUTION OF THE SOUTHWEST MONSOON REVEALED BY POLLEN RECORDS IN THE HEQING DEEP DRILLING CORE |
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| XIAO Xia-yun,SHEN Ji,WANG Su-min,XIAO Hai-feng,TONG Guo-bang.CLIMATIC CHANGE AND EVOLUTION OF THE SOUTHWEST MONSOON REVEALED BY POLLEN RECORDS IN THE HEQING DEEP DRILLING CORE[J].Acta Palaeontologica Sinica,2009,48(2). | |
| Authors: | XIAO Xia-yun SHEN Ji WANG Su-min XIAO Hai-feng TONG Guo-bang |
| Abstract: | Pollen types identified from the Heqing deep drilling core were divided into different pollen ecological groups in this paper. The changes of seven pollen ecological groups,two palynological diversity indices (D-total and H'-total) and several high percentage pollen taxa are used to reconstruct the palaeoclimatic evolution of the Heqing Basin of Yunnan Province. The palaeolcimate went through eight major stages since 2.780 Ma (late Pliocene to Holocene). Corresponding with the palaeoclimate,the southwest mo... |
| Keywords: | Palynological ecological group climatic change southwest monsoon late Pliocene-Holocene Heqing Basin |
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