MIS 3以来雅鲁藏布江流域风成沉积及环境意义
Aeolian sediments and their paleoenvironmental implication in the Yarlung Zangbo catchment (southern Tibet, China) since MIS3
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文摘
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雅江流域风成沉积广泛发育,其气候指示意义及年代的界定尚不够清晰。从雅江全流域视角出发,全面分析了不同区域风成沉积的发育机制及模式,同时对风成沉积年代数据归一化处理,并与全球气候对比研究。结果表明:①流域内风成沉积有盛行风场发育模式和局地风场发育模式,不同模式对环境的指示意义不同。②雅江流域风成沉积多堆积于末次盛冰期(LGM)以后,且主要发育于晚冰期(15 ka BP)以来的不同时段,冰川退缩地表裸露,丰富的冲洪积碎屑物源可能是风成沉积发育的主控因素;更早时段的风成沉积因LGM后气候转暖、冰川消融所致的侵蚀搬运作用而未能保存。③ LGM以来风成沉积过程受区域及全球古气候环境共同控制,波动变化剧烈;其对30°N夏季太阳辐射、印度季风及西风变化信号的指示有所差异,但对YD等全球气候冷事件有较好记录,其沉积过程与高原面上其他区域既存在对全球古气候响应的同步性,又有其区域独特性。④流域内风成沉积的强烈堆积过程与全球气候变化并非简单对应关系,呈现出较复杂的响应模式。说明高山河谷环境的风成沉积除受大区域气候影响,还受许多局地环境因素控制,古气候环境的指示意义复杂。 |
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其他语种文摘
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The aeolian deposits in the Yarlung Zangbo catchment are widely developed, and its sedimentary development model is complex. The climatic implication and chronological boundary of the aeolian sediments are not clear enough. Therefore, from the perspective of the whole basin, this paper comprehensively analyzed the development mechanism and mode of the aeolian sediments in different regions. At the same time, the chronological data of aeolian deposition is normalized and compared with the classical curve of global climate. The results show that: (1) The aeolian deposits in the basin have prevailing wind field development patterns and local wind field development patterns, and different patterns of aeolian sediments have different indications for the environment. (2) The aeolian sediments in the basin are mostly deposited in the Last Glacial Maximum (LGM), which mainly developed in different periods since the Late Glacial Period (15 ka BP), and the rich source of alluvial debris may be the main controlling factor of the aeolian activities. The aeolian sediments forming in the earlier time were brought into the river and failed to be preserved due to the warming climate and the erosion transport caused by glacial ablation after the LGM. (3) Since the LGM, the aeolian deposition process of Yarlung Zangbo has been controlled by the regional and global paleoclimate environment, and the fluctuations are drastic. The aeolian sedimentary process of different climate stage have different records to the 30°N summer insolation, the Indian monsoon and westerly winds change signal, but have a better response to the Younger Dryas (YD), global cold event. In short, the sedimentary process of Yarlung Zangbo is similar with that of the other regions on the Tibetan Plateau, and both recorded the global paleoclimatic change, but have its regional uniqueness. 4) The strong accumulation process of aeolian sediments in the Yarlung Zangbo catchment is not a simple correspondence with the global classical climate curve, and it presents a more complex response pattern to global climate change, which shows that the aeolian deposition process of the alpine valley environment is not only affected by the climate of the large area, but also controlled by many local environmental factors. Their relation with the paleoclimatic environment is complex. |
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来源
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地理学报
,2019,74(11):2385-2400 【核心库】
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DOI
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10.11821/dlxb201911014
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关键词
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风成沉积
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年代
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古气候环境
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雅鲁藏布江
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MIS3
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地址
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兰州大学资源环境学院, 西部环境教育部重点实验室, 兰州, 730000
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中国科学院青海盐湖研究所, 中国科学院盐湖资源综合高效利用重点实验室, 西宁, 810008
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青海省盐湖地质与环境重点实验室, 青海省盐湖地质与环境重点实验室, 西宁, 810008
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福建师范大学地理科学学院, 福州, 350007
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中国科学院青藏高原研究所, 中国科学院高寒生态与生物多样性重点实验室, 北京, 100101
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中国科学院青藏高原地球科学卓越创新中心, 中国科学院青藏高原地球科学卓越创新中心, 北京, 100101
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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0375-5444 |
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基金
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国家自然科学基金项目
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国家重点研发计划
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文献收藏号
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CSCD:6597023
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参考文献 共
58
共3页
|
|
1.
杨逸畴. 西藏高原地貌的形成和演化.
地理学报,1982,37(1):76-87
|
CSCD被引
14
次
|
|
|
|
|
2.
杨逸畴. 雅鲁藏布江河谷风沙地貌的初步观察.
中国沙漠,1984,4(3):12-16
|
CSCD被引
22
次
|
|
|
|
|
3.
Dong Zhibao. High-Altitude aeolian research on the Tibetan Plateau.
Reviews of Geophysics,2017,55(4):864-901
|
CSCD被引
24
次
|
|
|
|
|
4.
董治宝.
青藏高原风沙地貌图集,2017:1-91
|
CSCD被引
2
次
|
|
|
|
|
5.
Sun Jimin. Loess sedimentation in Tibet: Provenance, processes, and link with Quaternary glaciations.
Quaternary Science Reviews,2007,26:2265-2280
|
CSCD被引
22
次
|
|
|
|
|
6.
Li Sen. Formation mechanism and development pattern of aeolian sand landform in Yarlung Zangbo River Valley.
Science China Earth Sciences,1999,42(3):272-284
|
CSCD被引
3
次
|
|
|
|
|
7.
Lai Zhongping. Luminescence-dated aeolian deposits of Late Quaternary age in the southern Tibetan Plateau and their implications for landscape history.
Quaternary Research,2009,72:421-430
|
CSCD被引
20
次
|
|
|
|
|
8.
Kaiser Knut. Stratigraphy and palaeoenvironmental implications of Pleistocene and Holocene aeolian sediments in the Lhasa area, southern Tibet (China).
Palaeogeography, Palaeoclimatology, Palaeoecology,2009,271:329-342
|
CSCD被引
11
次
|
|
|
|
|
9.
李森. 雅鲁藏布江河谷风沙地貌分类与发育问题.
中国沙漠,1997,17(4):342-350
|
CSCD被引
26
次
|
|
|
|
|
10.
Zhou Na. The geomorphology and evolution of aeolian landforms within a river valley in a semi-humid environment: A case study from Mainling valley, Qinghai-Tibet Plateau.
Geomorphology,2014,224:27-38
|
CSCD被引
13
次
|
|
|
|
|
11.
Shen Weishou. Evolution of aeolian sand in the source region of China's Yarlung Zangbo river.
Environmental Science & Technology,2010,2:344-351
|
CSCD被引
1
次
|
|
|
|
|
12.
Shen Weishou. Dynamics of aeolian sandy land in the Yarlung Zangbo River Basin of Tibet, China from 1975 to 2008.
Global and Planetary Change,2012,86/87:37-44
|
CSCD被引
24
次
|
|
|
|
|
13.
Li Qing. Developing trend of aeolian desertification in China's Tibet Autonomous region from 1977 to 2010.
Environmental Earth Sciences,2016,75:894-905
|
CSCD被引
1
次
|
|
|
|
|
14.
Li Chaoliu. Rare earth elements in the surface sediments of the Yarlung Tsangbo (Upper Brahmaputra River) sediments, southern Tibetan Plateau.
Quaternary International,2009,208:151-157
|
CSCD被引
3
次
|
|
|
|
|
15.
Du Shisong. Geochemical characteristics of fine and coarse fractions of sediments in the Yarlung Zangbo River Basin (southern Tibet, China).
Environmental Earth Sciences,2018,77:336-347
|
CSCD被引
4
次
|
|
|
|
|
16.
Georg Stauch. Geomorphological and palaeoclimate dynamics recorded by the formation of aeolian archives on the Tibetan Plateau.
Earth-Science Reviews,2015,150:393-408
|
CSCD被引
22
次
|
|
|
|
|
17.
Lehmkuhl F. Late Quaternary aeolian sedimentation in central and south-eastern Tibet.
Quaternary International,2000,68/71:117-132
|
CSCD被引
12
次
|
|
|
|
|
18.
吴海锋. 雅鲁藏布江中游12 ka BP前后的黄土堆积及其气候意义.
中国沙漠,2016,36(3):616-622
|
CSCD被引
9
次
|
|
|
|
|
19.
Li Tuoyu. Geochemical characterization of a Holocene aeolian profile in the Zhongba area (southern Tibet, China) and its paleoclimatic in plications.
Aeolian Research,2016,20:169-175
|
CSCD被引
3
次
|
|
|
|
|
20.
Pan Meihui. Holocene aeolian activity in the Dinggye area (southern Tibet, China).
Aeolian Research,2014,12:19-27
|
CSCD被引
5
次
|
|
|
|
|
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