Based on the section plane of Quaternary system at Sangda Village in Lhasa, Tibet, this paper analyses the phytolith characteristics such as morphological classification, combination character, warmth index and divides five assemblage zones. First assemblage zone is tooth model-smooth bar model, chip model, and muri block, reflecting the temperature of warm-cool. Second, the phytolith characteristic is rectangular model-smooth bar model, polyhedron model, it reflects the climate getting warmer. Thirdly, it is rectangular model, tooth model-smooth bar model, showing the climate drought; the next assemblage zone is rectangular model-dumbbell model, tooth model-smooth bar model, and polyhedron model, reflecting the weather getting warmer and dampness. Lastly, the phytolith characteristic is tooth model, cap model-smooth bar model, polyhedron model, and chip model, showing the climate getting colder. The study of morphological classification and combination could be applied for palaeoenvironment and paleo-vegetations of the Quaternary in the Sangda village, Lhasa area.
CHEN Ling-Kang, GUO Jian-Qiu, GU Yan-Sheng, CHEN Hai-Xia
. Characteristics of Phytolith Assemblages of Quaternary in Sangda Region of Lhasa, Tibet[J]. SCIENTIA GEOGRAPHICA SINICA, 2008
, 28(3)
: 402
-406
.
DOI: 10.13249/j.cnki.sgs.2008.03.402
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