Arid
DOI10.5194/cp-4-107-2008
Thirty thousand years of vegetation development and climate change in Angola (Ocean Drilling Program Site 1078)
Dupont, L. M.1; Behling, H.2; Kim, J. -H.3
通讯作者Dupont, L. M.
来源期刊CLIMATE OF THE PAST
ISSN1814-9324
EISSN1814-9332
出版年2008
卷号4期号:2页码:107-124
英文摘要

ODP Site 1078 situated under the coast of Angola provides the first record of the vegetation history for Angola. The upper 11 m of the core covers the past 30 thousand years, which has been analysed palynologically in decadal to centennial resolution. Alkenone sea surface temperature estimates were analysed in centennial resolution. We studied sea surface temperatures and vegetation development during full glacial, deglacial, and interglacial conditions. During the glacial the vegetation in Angola was very open consisting of grass and heath lands, deserts and semi-deserts, which suggests a cool and dry climate. A change to warmer and more humid conditions is indicated by forest expansion starting in step with the earliest temperature rise in Antarctica, 22 thousand years ago. We infer that around the period of Heinrich Event 1, a northward excursion of the Angola Benguela Front and the Congo Air Boundary resulted in cool sea surface temperatures but rain forest remained present in the northern lowlands of Angola. Rain forest and dry forest area increase 15 thousand years ago. During the Holocene, dry forests and Miombo woodlands expanded. Also in Angola globally recognised climate changes at 8 thousand and 4 thousand years ago had an impact on the vegetation. During the past 2 thousand years, savannah vegetation became dominant.


类型Article
语种英语
国家Germany ; Netherlands
收录类别SCI-E
WOS记录号WOS:000257303600003
WOS关键词LAST GLACIAL MAXIMUM ; SEA-SURFACE TEMPERATURES ; SOUTH-ATLANTIC-OCEAN ; LATE QUATERNARY ; POLLEN RECORD ; EQUATORIAL AFRICA ; ATMOSPHERIC CO2 ; AGE CALIBRATION ; KYR BP ; MARINE
WOS类目Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
WOS研究方向Geology ; Meteorology & Atmospheric Sciences
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/156890
作者单位1.Univ Bremen, MARUM Ctr Marine Environm Sci, Bremen, Germany;
2.Univ Gottingen, Palynol & Climate Dynam Albrecht Haller Inst Plan, Gottingen, Germany;
3.NIOZ, Texel, Netherlands
推荐引用方式
GB/T 7714
Dupont, L. M.,Behling, H.,Kim, J. -H.. Thirty thousand years of vegetation development and climate change in Angola (Ocean Drilling Program Site 1078)[J],2008,4(2):107-124.
APA Dupont, L. M.,Behling, H.,&Kim, J. -H..(2008).Thirty thousand years of vegetation development and climate change in Angola (Ocean Drilling Program Site 1078).CLIMATE OF THE PAST,4(2),107-124.
MLA Dupont, L. M.,et al."Thirty thousand years of vegetation development and climate change in Angola (Ocean Drilling Program Site 1078)".CLIMATE OF THE PAST 4.2(2008):107-124.
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