| Institute of Geomechanics, Chinese Academy of Geological Sciences | Host |
| Citation: |
GUO Sheng-qiao, SHI Ying, YANG Li-juan, CAO Jia-dong, ZHANG Wen-qin, ZHANG Jing, LIN Fang, HE Jian-xin. A STUDY OF PALEOCLIMATIC FLUCTUATIONS IN THE LAST 2600 YEARS IN THE NINGJIN LAKE AREA,HEBEI PROVINCE[J]. Journal of Geomechanics, 1999, 5(4): 75-81.
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A STUDY OF PALEOCLIMATIC FLUCTUATIONS IN THE LAST 2600 YEARS IN THE NINGJIN LAKE AREA,HEBEI PROVINCE
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Abstract
Based on the data of sporpollen assemblages, clay minerals, and grain size of the Nanwangzhuang section in the Ningjin lake area, and the timescale established from the age/grain size model by Porter et al, the climatic fluctuations in the last 2600 years are brought out to light as reflected by the seven sporopollen zones.Zone Ⅰ representing a cold and dry climate was ca.200~630 aBP in age, Zone Ⅱ formed in a warm and humid climate in ca.630~1010 aBP, Zone Ⅲ indicative of a cold and humid climate was of an age of ca.1010~1165 aBP, Zone Ⅳ again warm and humid in ca.1165~1350 aBP, Zone Ⅴ, being characteristic of a slightly cool and dry climate was ca.1350~1790 aBP old, Zone Ⅵ, warm and a little dry in ca.1790~2250 aBP, Zone Ⅶ cold and dry in ca.2250~2580 aBP.Such climatic fluctuations well accord with the historical records and may be of a global significance.-
Keywords:
- high-resolution /
- lake sediment /
- paleoclimate /
- 2600 years /
- North China Plain
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GUO Sheng-qiao, SHI Ying, YANG Li-juan, CAO Jia-dong, ZHANG Wen-qin, ZHANG Jing, LIN Fang, HE Jian-xin. A STUDY OF PALEOCLIMATIC FLUCTUATIONS IN THE LAST 2600 YEARS IN THE NINGJIN LAKE AREA,HEBEI PROVINCE[J]. Journal of Geomechanics, 1999, 5(4): 75-81.
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