Palynological investigation of a Holocene profile section from the Palaeo-Gaxun-Nur-Basin

被引：14

作者：

Demske, D ^{[1
]}

Mischke, S ^{[1
]}

机构：

[1] Free Univ Berlin, FB Geowissensch, Inst Geol Wissensch Palaontol, D-12249 Berlin, Germany

来源：

CHINESE SCIENCE BULLETIN | 2003年 / 48卷 / 14期

关键词：

pollen; Inner Mongolia; lake sediments; Holocene;

D O I：

10.1360/02wd0255

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Palynological investigations on lacustrine sediment samples revealed a general dominance of open Artemisia-Chenopodiaceae vegetation in the Palaeo-Gaxun-Nur-Basin (Inner Mongolia) between 5250 and 3500 cal. aBP. Riverside woods (Hippophae, Populus) developed between 3500-3250 cal. aBP and reflect moister growing conditions. During the following moist-dry transition pronounced cooling occurred around 3000 cal. aBP, in upper elevations favouring the spread of montane woods (Picea, Betula). Aridity strongly increased from 2900 to 2700 cal. aBP. The recorded vegetational and environmental changes after 3500 cal. aBP can be correlated with glacier advances in the mountains and with a humid phase in the Tengger Shamo followed by desertification.

引用

页码：1418 / 1422

页数：5

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