台灣中部古湖沼沉積上次間冰期之孢粉層序
Date Issued
2005
Date
2005
Author(s)
劉平妹
DOI
932116M002032
Abstract
In an effort to understand the Holocene Interglacial, the natural forcing of climate
change, pollen stratigraphy of the last interglacial – Eemian in central Taiwan, is
studied. We integrate the palynological result of the sediments in both outcrop and
drillings at the northern part of Yuchi Basin where Eemian deposits are anticipated
based on previous palynological study and the available dates in the profile. The
result shows that both Castanopsis and Gramineae are important in the early stage of
Eemian; Gramineae decline in the middle part of this stage and finally in the late stage
Carpinus and Gramineae increase in addition to the still prevailing of Castanopsis.
This sequence indicates the conditions from warm dry in early stage to warm humid
in middle stage and then to the relative cool - dry in late stage. The general feature
of the climatic trend is similar to Europe although with still small fluctuations here.
The warm dry climatic conditions in early Eemian is different from that of the early
Holocene in this area and the widely distributed Carpinus during Eemian. indicates
the less steep latitudinal gradient of climate compared with Holocene.
Subjects
Last interglacial
Eemian
pollen stratigraphy
Lake deposits
Carpinus
Publisher
臺北市：國立臺灣大學地質科學系暨研究所
Type
report
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