In the plain of North China, the major forest vegetations in the Quaternary were deciduous-broadleaf forest, mixed forest consisting of Pinus and deciduous-broadleaf trees, which indicate warm climate, and the mixed forests consisting of Picea, Abies and deciduous broadleaf trees, which indicate cold climate. Because of the lack of standard pollen amount the previous result determined as Picea Abies isn’t precise, actually the most of them should belong to mixed forest type showing cold climate. Cosequently, the droping range in temperature in the glacial epoch should be lower than that of being estimated by predecessors. The temperature was slightly lower than that occured at the lower boundary of Picea-Abies forest at that time. The forest-steppe vegetation mainly consisted of Pinus, Betula, Quercus, Ulmus and herb, which represents warm and semi-arid climate.The steppe included the meadow steppe and the graminea steppe. Some cold-resistant vegetations such as alpine meadow and tundra which the southern boundary should lie to the north of 42°N during the glacial epoch, have been found.
Zhao Jingbo
. VEGETATION TYPE AND CLIMATE DURING THE QUATERNARY IN THE PLAIN OF NORTH CHINA[J]. SCIENTIA GEOGRAPHICA SINICA, 1986
, 6(2)
: 151
-157
.
DOI: 10.13249/j.cnki.sgs.1986.02.151
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