scholarly journals Holocene Vegetation and Climate Dynamics in the Altai Mountains and Surrounding Areas

2018 ◽  
Vol 45 (13) ◽  
pp. 6628-6636 ◽  
Author(s):  
Xiaozhong Huang ◽  
Wei Peng ◽  
Natalia Rudaya ◽  
Eric C. Grimm ◽  
Xuemei Chen ◽  
...  
Keyword(s):  
Climate Dynamics ◽  
Altai Mountains ◽  
Surrounding Areas ◽  
Vegetation And Climate

Pollen-based reconstructions of vegetation and climate changes during the late Holocene in the southern Altai Mountains

The Holocene ◽  
2019 ◽  
Vol 29 (9) ◽  
pp. 1450-1458 ◽  
Author(s):  
Yunpeng Yang ◽  
Dongliang Zhang ◽  
Aizhi Sun ◽  
Wei Wang ◽  
Bo Lan ◽  
...  
Keyword(s):  
Late Holocene ◽  
Climate Changes ◽  
Altai Mountains ◽  
Pollen Data ◽  
Raised Bog ◽  
Increasing Trend ◽  
Surrounding Areas ◽  
Vegetation And Climate ◽  
Peat Area

We here preset a result of high-resolution pollen data of a lacustrine-peat sediment core from Yushenkule (YSKL) Peat, southern Altai Mountains, northwestern China. We aim to reconstruct the palaeovegetation and palaeoclimate variations in the southern Altai Mountains and further evaluate the role of autogenic process of the raised bog itself in driving the local vegetation dynamics. The pollen data of YSKL core-2 show two major vegetation stages in YSKL Peat area and the surrounding areas during the data-covering period. During the stage lasting from ~4870 to ~2550 cal. yr BP, regional vegetation was dominated by desert steppe and local vegetation in YSKL Peat was characterized by Artemisia-dominated mountain steppe. During the stage lasting from ~2550 to ~700 cal. yr BP, regional vegetation was characterized by Artemisia-dominated steppe and local vegetation in YSKL Peat was characterized by Cyperaceae-dominated wetland herbs. The Ar/Am ( Artemisia/Amaranthaceae) ratio-indicated moisture increasing trend of southern Altai Mountains can attribute to the combined effects of decreased temperature and increased precipitation. The lithologic transition from lake to peat of YSKL core-2 can be explained by invoking the variations in the areal extent of ice covers in the Altai Mountains.

Pollen record of early- to mid-Holocene vegetation and climate dynamics on the eastern coast of the Yellow Sea, South Korea

The Holocene ◽  
2018 ◽  
Vol 28 (6) ◽  
pp. 1011-1022 ◽  
Author(s):  
Bing Song ◽  
Sangheon Yi ◽  
Wook-Hyun Nahm ◽  
Jin-Young Lee ◽  
Limi Mao ◽  
...  
Keyword(s):  
South Korea ◽  
Yellow Sea ◽  
Asian Summer Monsoon ◽  
Climate Dynamics ◽  
Cold Climate ◽  
The Yellow Sea ◽  
Eastern Coast ◽  
Pollen Record ◽  
Vegetation And Climate ◽  
Humid Period

To understand the early- to mid-Holocene vegetation and climate dynamics on the eastern coast of the Yellow Sea, we obtained a sedimentary core with high-resolution accelerator mass spectrometry (AMS) carbon 14 (14C) data from the Gunsan coast in South Korea. The palynological analysis demonstrated that the riverine wetland meadow from 12.1 to 9.8 cal. kyr BP changed to temperate deciduous broad-leaved forest in 9.8–2.8 cal. kyr BP. In addition, the cold climate from 12.1 to 9.8 cal. kyr BP became warmer from 8.5 to 7.3 cal. kyr BP. This was followed by another relatively cold period from 7.3 to 2.8 cal. kyr BP. The temperature change was mainly in response to solar factors. However, there are two relatively humid periods from 12.1 to 9.8 and 8.5 to 7.3 cal. kyr BP, which arose for different reasons. The earlier humid period resulted from strong westerlies and a rapidly rising sea level. The later humid period was produced mainly by the strong East Asian summer monsoon (EASM) and may also be linked to La Niña–like activity. The cold ‘Younger Dryas’ event from 12.0 to 11.4 cal. kyr BP recorded in this study may have been produced by a North Atlantic meltwater pulse. This would have reduced temperatures that were already low because of weak insolation, and the strong winter monsoons would have increased the precipitation.

scholarly journals Late Quaternary vegetation and climate dynamics in central‐eastern Brazil: insights from a ~35k cal a bp peat record in the Cerrado biome

2020 ◽  
Vol 35 (5) ◽  
pp. 664-676 ◽  
Author(s):  
Ingrid Horák‐Terra ◽  
Antonio Martínez Cortizas ◽  
Cynthia Fernandes Pinto Da Luz ◽  
Alexandre Christófaro Silva ◽  
Tim Mighall ◽  
...  
Keyword(s):  
Late Quaternary ◽  
Climate Dynamics ◽  
Cerrado Biome ◽  
Eastern Brazil ◽  
Central Eastern ◽  
Vegetation And Climate

Reconstructing Valanginian (Early Cretaceous) mid-latitude vegetation and climate dynamics based on spore–pollen assemblages

2013 ◽  
Vol 197 ◽  
pp. 50-69 ◽  
Author(s):  
Ariane Kujau ◽  
Ulrich Heimhofer ◽  
Peter A. Hochuli ◽  
Sebastian Pauly ◽  
Chloé Morales ◽  
...  
Keyword(s):  
Early Cretaceous ◽  
Climate Dynamics ◽  
Vegetation And Climate

Vegetation and climate dynamics during the Holocene and Eemian interglacials derived from Lake Baikal pollen records

2007 ◽  
Vol 252 (3-4) ◽  
pp. 440-457 ◽  
Author(s):  
Pavel Tarasov ◽  
Elena Bezrukova ◽  
Eugene Karabanov ◽  
Takeshi Nakagawa ◽  
Mayke Wagner ◽  
...  
Keyword(s):  
Lake Baikal ◽  
Climate Dynamics ◽  
The Holocene ◽  
Vegetation And Climate ◽  
Pollen Records

scholarly journals Three millennia of vegetation and environmental dynamics in the Lagunas de Mojanda region, northern Ecuador

2017 ◽  
Vol 57 (2) ◽  
pp. 407-421 ◽  
Author(s):  
Andrea Villota ◽  
Hermann Behling ◽  
Susana León-Yánez
Keyword(s):  
Vegetation Type ◽  
Montane Forest ◽  
Climatic Conditions ◽  
Climate Dynamics ◽  
Peat Bog ◽  
Pollen Record ◽  
Vegetation Composition ◽  
Human Occupation ◽  
Vegetation And Climate ◽  
Montane Rainforest

AbstractThe pollen record from Lagunas de Mojanda, located at 3748 m a.s.l. (northern Ecuadorian Andes) reflects the vegetation and climate dynamics for the last ca 3400 cal yr BP. Páramo vegetation has been the main vegetation type since the beginning of the record. At Lagunas de Mojanda, from the last ca 3400 to 2200 cal yr BP, grass páramo was well represented mainly by Poaceae (40%) and the occurrence ofValeriana(5%), while montane forest taxa were poorly represented and subpáramo taxa were rare. The vegetation composition suggests cool and humid conditions. Between ca 2200 and ca 1300 cal yr BP, montane rainforest and subpáramo taxa had a higher presence but páramo taxa remained the main vegetation type in the study area, suggesting cool climatic conditions. From ca 1300 to ca 500 cal yr BP, páramo vegetation remained stable, with higher presence ofPhlegmariurusandIsoetes, suggesting cool and humid conditions. The last ca 500 cal yr BP generally show lower frequency of montane rainforest and subpáramo taxa. Páramo vegetation reached the highest share, with the presence of Poaceae,PlantagoandRanunculussuggesting a trend of peat bog drying. Fires were present during the whole record, perhaps human-caused, but the study area does not show great disturbance except from ca 1300 to 500 cal yr BP, a period of an evident higher influx of charcoal particles coincidentally with nearby ancient human occupation.

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