中晚全新世科尔沁沙地沉积物化学特征及其气候变化

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中晚全新世科尔沁沙地沉积物化学特征及其气候变化

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中图分类号: P512.2

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文章访问数: 1979
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Chemical Characteristics of Sediments in Horqin Desert and Climatic Change during the Middle and Late Holocene

摘要

摘要: 科尔沁沙地位于我国沙漠—黄土边界带和北方农牧交错带，深受东亚季风的影响，对全球气候变化反应非常敏感，是研究全球气候变化的理想区域。TL剖面磁化率、粒度和地球化学元素氧化物及其比值变化分析表明：中晚全新世研究区气候极不稳定，可以大致划分为：① 6.0～4.2 ka BP，气候暖湿，夏季风逐渐增强，并占据主导，冬季风较弱，与全新世大暖期对应，但存在百年尺度的气候波动，其中：6.0～5.6 ka BP，5.5～5.4 ka BP，4.9～4.7 ka BP，4.5～4.2 ka BP气候暖湿；5.6～5.5 ka BP，5.4～4.9 ka BP，4.7～4.5 ka BP气候相对冷干。② 4.2～1.3 ka BP，气候相对暖湿，与上一阶段相比夏季风有所减弱，其间也存在次一级波动，4.2～3.63 ka BP，3.57～3.4 ka BP气候相对干冷；3.63～3.57 ka BP，3.4～1.3 ka BP，气候相对暖湿。③ 1.3～0.65 ka BP以来，气候波动频繁，后期有向暖湿发展的趋势。这些气候变化与区域和全球变化具有良好的对应关系，反映该区气候变化与全球气候变化具有高度一致性。
- 科尔沁沙地 /
- 地球化学元素 /
- 气候变化
Abstract: The Horqin desert, intensely influenced by East Asian monsoon, is located in the desert-loess boundary belt and agricultural and animal husbandry interlaced zone in North China. The geographic setting suggests that the Horqin desert is very sensitive to the global climatic change, so it is an ideal zone for studying the response of global climatic change. Analysis on magnetic susceptibility, grain size and oxides and ratios of chemical elements from TL profile during the middle and late Holocene indicates that the regional climate is very unstable, which is classified into the following phases: ① From 6.0 ka BP to 4.2 ka BP, the summer monsoonal strength is continuously increased and dominated this region, the warm and humid climate is corresponding to the Holocene thermal maximum period, but exists climatic fluctuation on centennial scale, accompanying with weaker winter monsoon. During this period, the climate is warm and humid in 6.0~5.6 ka BP, 5.5~5.4 ka BP, 4.9~4.7 ka BP, 4.5~4.2 ka BP while it is relatively cold and dry in 5.6~5.5 ka BP, 5.4~4.9 ka BP, 4.7~4.5 ka BP. ② From 4.2 ka BP to 1.3 ka BP, compared with the former phase, the regional climate becomes relatively warm and humid but have smaller fluctuations, accompanying with the declined summer monsoonal strength. The climate is dominated by cold and dry in 4.2~3.63 ka BP, 3.57~3.4 ka BP while it is relatively warm and humid in 3.63~3.57 ka BP, 3.4~1.3 ka BP. ③ From 1.3 ka BP to 0.65 ka BP, the regional climate is frequently fluctuated and tends to warm and humid in the later stage. These climatic changes in Horqin desert are very coincident with the regional and global climatic change, reflecting the obvious consistency between them.
- Horqin desert /
- geochemical element /
- climatic change

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[1]	高小雪, 韩瑞辰, 范虎童, 王永波, 赵艳, 沈吉, 刘兴起, 汪勇. 云南北海湿地沉积物记录的过去2050年气候演化及对区域人类文明的影响 . 沉积学报, 2020, 38(5): 1016-1025. doi: 10.14027/j.issn.1000-0550.2019.100
[2]	王兆夺, 黄春长, 庞奖励, 刘安娜, 周亚利, 查小春. 甘肃庄浪全新世黄土土壤物源分析及古气候恢复重建 . 沉积学报, 2020, 38(4): 781-789. doi: 10.14027/j.issn.1000-0550.2019.077
[3]	李卓仑, 高有红, 李若兰, 王乃昂, 朱瑞霞. 阿拉善沙漠全新世钙质根管形成机制及其古环境指示意义:来自微观形态学证据 . 沉积学报, 2018, 36(6): 1131-1138. doi: 10.14027/j.issn.1000-0550.2018.111
[4]	商圣潭, 钟巍, 魏志强, 朱婵, 薛积彬. 南岭东部定南大湖沉积物粒度敏感组分及末次冰消期环境记录 . 沉积学报, 2018, 36(2): 310-318. doi: 10.14027/j.issn.1000-0550.2018.035
[5]	张文桐, 庞奖励, 黄春长, 周亚利, 查小春, 崔天宇, 王海燕, 杨丹. 汉江上游庹家湾剖面化学风化特征及其意义 . 沉积学报, 2017, 35(3): 508-515. doi: 10.14027/j.cnki.cjxb.2017.03.009
[6]	李小妹, 严平, 吴伟, 钱瑶. 中国北方三流域河流—沙漠过渡带地表沉积物化学元素空间差异分析 . 沉积学报, 2016, 34(4): 615-625. doi: 10.14027/j.cnki.cjxb.2016.04.001
[7]	高鹏坤, 庞奖励, 黄春长, 周亚利, 卞鸿雁, 王蕾彬, 王学佳. 陕南丹凤茶房村黄土—古土壤剖面色度参数特征 . 沉积学报, 2015, 33(3): 537-542. doi: 10.14027/j.cnki.cjxb.2015.03.011
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[11]	. 海岸沙丘表面现代风成沙地球化学元素分异的典型研究——以河北昌黎黄金海岸横向沙脊为例 . 沉积学报, 2012, 30(4): 724-730.
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文章访问数: 1979
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中晚全新世科尔沁沙地沉积物化学特征及其气候变化

刊出日期: 2012-06-10

中图分类号: P512.2

关键词:

科尔沁沙地 /

地球化学元素 /

气候变化

摘要: 科尔沁沙地位于我国沙漠—黄土边界带和北方农牧交错带，深受东亚季风的影响，对全球气候变化反应非常敏感，是研究全球气候变化的理想区域。TL剖面磁化率、粒度和地球化学元素氧化物及其比值变化分析表明：中晚全新世研究区气候极不稳定，可以大致划分为：① 6.0～4.2 ka BP，气候暖湿，夏季风逐渐增强，并占据主导，冬季风较弱，与全新世大暖期对应，但存在百年尺度的气候波动，其中：6.0～5.6 ka BP，5.5～5.4 ka BP，4.9～4.7 ka BP，4.5～4.2 ka BP气候暖湿；5.6～5.5 ka BP，5.4～4.9 ka BP，4.7～4.5 ka BP气候相对冷干。② 4.2～1.3 ka BP，气候相对暖湿，与上一阶段相比夏季风有所减弱，其间也存在次一级波动，4.2～3.63 ka BP，3.57～3.4 ka BP气候相对干冷；3.63～3.57 ka BP，3.4～1.3 ka BP，气候相对暖湿。③ 1.3～0.65 ka BP以来，气候波动频繁，后期有向暖湿发展的趋势。这些气候变化与区域和全球变化具有良好的对应关系，反映该区气候变化与全球气候变化具有高度一致性。

Chemical Characteristics of Sediments in Horqin Desert and Climatic Change during the Middle and Late Holocene

Publish Date: 2012-06-10

Keywords:

Abstract: The Horqin desert, intensely influenced by East Asian monsoon, is located in the desert-loess boundary belt and agricultural and animal husbandry interlaced zone in North China. The geographic setting suggests that the Horqin desert is very sensitive to the global climatic change, so it is an ideal zone for studying the response of global climatic change. Analysis on magnetic susceptibility, grain size and oxides and ratios of chemical elements from TL profile during the middle and late Holocene indicates that the regional climate is very unstable, which is classified into the following phases: ① From 6.0 ka BP to 4.2 ka BP, the summer monsoonal strength is continuously increased and dominated this region, the warm and humid climate is corresponding to the Holocene thermal maximum period, but exists climatic fluctuation on centennial scale, accompanying with weaker winter monsoon. During this period, the climate is warm and humid in 6.0~5.6 ka BP, 5.5~5.4 ka BP, 4.9~4.7 ka BP, 4.5~4.2 ka BP while it is relatively cold and dry in 5.6~5.5 ka BP, 5.4~4.9 ka BP, 4.7~4.5 ka BP. ② From 4.2 ka BP to 1.3 ka BP, compared with the former phase, the regional climate becomes relatively warm and humid but have smaller fluctuations, accompanying with the declined summer monsoonal strength. The climate is dominated by cold and dry in 4.2~3.63 ka BP, 3.57~3.4 ka BP while it is relatively warm and humid in 3.63~3.57 ka BP, 3.4~1.3 ka BP. ③ From 1.3 ka BP to 0.65 ka BP, the regional climate is frequently fluctuated and tends to warm and humid in the later stage. These climatic changes in Horqin desert are very coincident with the regional and global climatic change, reflecting the obvious consistency between them.

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中晚全新世科尔沁沙地沉积物化学特征及其气候变化

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Chemical Characteristics of Sediments in Horqin Desert and Climatic Change during the Middle and Late Holocene

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中晚全新世科尔沁沙地沉积物化学特征及其气候变化

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Chemical Characteristics of Sediments in Horqin Desert and Climatic Change during the Middle and Late Holocene

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中晚全新世科尔沁沙地沉积物化学特征及其气候变化

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出版历程

Chemical Characteristics of Sediments in Horqin Desert and Climatic Change during the Middle and Late Holocene

计量

出版历程

目录

中晚全新世科尔沁沙地沉积物化学特征及其气候变化

English Abstract

Chemical Characteristics of Sediments in Horqin Desert and Climatic Change during the Middle and Late Holocene

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目录

友情链接

期刊在线

联系我们