Palynological Evidence for Climatic Changes in Dabuxun Lake of Oinghai Province during the Past 500,000 Years

JIANG De xin; YANG Hui qiu

Abstract

Based on the sporo-pollen analvscs of the core samples of Corcholc D-1 from the Dahuxun Lakc in the Qaidam Basin of the Qinghai Province, the sporo-pollen diagram may he divided into three palynofloral zones, i.e.Zone Q₂,Zone Q₃,and Zone Q₄.In accordance with the characteristics of the palynofloras} the problems on the vcgctational evolution and the paleoclimatic changes in the past 500 ka were discussed.Ages of the scdimcntarv section of Corcholc D-1 are based on palcomagnetic dating.The results of this study indicate that the middle to late Middle Pleistocene(500-130 ka BP) palcoclimate might he a semi-wet type of the warm-temperate zone the Latc Pleistocene(130-10 ka BP) palcoclimatc might he a semi-arid type of the temperate zone and the Holocene(10-0 ka BP) palcoclimatc might he a arid type of the cool-tcm-pcratc zone in the Qaidam Basin. The Latc Pleistocene climatic changes coincide essentially with the evolution of cool and warm events recorded by the Guliya ice core from the Qinghai-Tibetan Plateau.

Keywords:

References

[1]

1 德比希尔E，绍J，王靖泰. 柴达木盆地达布逊湖1 号孔古地磁年代 [J]. 冰川冻土，1985，7：227 ~ 232

2 王靖泰，德比希尔E，张勇，绍J. 柴达木盆地第四纪研究的新进展[J]. 科学通报，1985，12：936 ~ 9403 Wang J，Zhang Y，Derbyshire E，Shaw J. Recent progress in study of the Ouaternary of Oaidam Basin，Oingha[i J]. Kexue Tongbao，1986，31：252 ~256

4 陈克造，Bowier J M. 柴达木盆地察尔汗盐湖沉积特征及其古气候演化的初步研究[J]. 中国科学（B 辑），1985，5：463 ~ 472

5 耿伯介. 中国植物地理区域[M]. 上海：新知识出版社，1958.1 ~ 128

6 杜乃秋，孔昭宸. 青海柴达木盆地察尔汗盐湖的孢粉组合及其在地理和植物学的意义[J]. 植物学报，1983，25：275 ~ 282

7 Yang W，Spencer R J，Krouse H R，Lowenstein T K，Casas E. Stabie isotopes of iake and fiuid inciusion brines，Dabusun Lake，Oaidam Basin，western China： Hydroiogy and paieociimatoiogy in arid environments[J ].Palaeogeography，Palaeoclimatology，Palaeoecology，1995，117：279 ~ 290

8 姚檀栋，Thompson L G，施雅风，秦大河，焦克勤，杨志红，田立德，Mosiey-Thompson E. 古里雅309 m 深孔冰芯中末次间冰期以来气候变化研究. 冰芯与寒区环境实验室年报[J]，1996，2：47 ~ 59

9 姚檀栋，Thompson L G，施雅风，秦大河，焦克勤，杨志红，田立德，Mosiey-Thompson E. 古里雅冰芯中末次间冰期以来气候变化记录研究[J]. 中国科学（D 辑），1997，27：447 ~ 452

10 GRIP members. Ciimate instabiiity during the iast intergiaciai period recorded in the GRIP ice core[J]. Nature，1993，364：203 ~ 207

Proportional views

Palynological Evidence for Climatic Changes in Dabuxun Lake of Oinghai Province during the Past 500,000 Years

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Article Metrics

Proportional views

Related