Climates and Environments of the Holocene Mega thermal Maximum in China  

作　　者：施雅风 孔昭晨 王苏民 唐领馀 王富葆 姚檀栋 赵希涛 张丕远 施少华 

机构地区：[1]Nanjing Institute of Geography and Limnology, Academia Sinica, Nanjing 210008 Lanzhou Institute of Glaciology and Geocryology, Academia Sinica, Lanzhou 730000 [2]Institute of Botany, Academia Sinica, Beijing 100093 [3]Nanjing Institute of Geography and Limnology, Academia Sinica, Nanjing 210008 [4]Nanjing Institute of Geology and Palaeontology, Academia Sinica, Nanjing 210008 [5]Department of Geography and Ocean Science, Nanjing University, Nanjing 210008 [6]Lanzhou Institute of Glaciology and Geocryology, Academia Sinica, Lanzhou 730000 [7]Institute of Geology, Academia Sinica, Beijing 100029 [8]Institute of Geography, Academia Sinica, Beijing 100101

出　　处：《Science China Chemistry》1994年第4期481-493,共13页中国科学（化学英文版）

摘　　要：Based on data from palynology, paleosols, paleolimnology, ice core, archeology, sea levels, etc. , we reconstructed climates and environments of the Holocene Megathermal maximum (7. 2-6. 0 ka B. P. ), particularly vegetation zones, temperatures, precipitation and sea-level fluctuations. Annual mean temperature during that period was estimated at 1 ℃ higher than today for South China, 2 ℃ higher for the Changjiang River Valley, about 3℃ higher for North China, Northeast China and Northwest China and up to 4 - 5 ℃ higher for southern Qinghai-Xizang Plateau. Relative winter temperatures increased much more than average annual temperatures. The centennial-scale warming was accompanied by the expansion of summer monsoon and recession of winter cold currents as well as northward and westward shift of vegetation zones. Higher lake levels registered in all inland lakes of Inner Mongolia, Xinjiang, Qinghai and Xizang indicated that precipitation increased to a certain extent. The Holocene highest sea level in East China about 1 -3 m higher than today, occurred within 6. 5 and 5. 0 kaB. P. and sea water covered coastal areas of about 7×104 km2, which was the Holocene greatest scope of transgression.Based on data from palynology, paleosols, paleolimnology, ice core, archeology, sea levels, etc. , we reconstructed climates and environments of the Holocene Megathermal maximum (7. 2-6. 0 ka B. P. ), particularly vegetation zones, temperatures, precipitation and sea-level fluctuations. Annual mean temperature during that period was estimated at 1 ℃ higher than today for South China, 2 ℃ higher for the Changjiang River Valley, about 3℃ higher for North China, Northeast China and Northwest China and up to 4 - 5 ℃ higher for southern Qinghai-Xizang Plateau. Relative winter temperatures increased much more than average annual temperatures. The centennial-scale warming was accompanied by the expansion of summer monsoon and recession of winter cold currents as well as northward and westward shift of vegetation zones. Higher lake levels registered in all inland lakes of Inner Mongolia, Xinjiang, Qinghai and Xizang indicated that precipitation increased to a certain extent. The Holocene highest sea level

关 键 词：HOLOCENE MEGATHERMAL maximum CLIMATIC changes highest SEA level. 

分 类 号：P534[天文地球—古生物学与地层学]