Pollen records and time scale for the RM core of the Zoige Basin, northeastern Qinghai-Tibetan Plateau  

作　　者：SHENCaiming TANGLingyu WANGSumin LIChunhai LIUKam-biu 

机构地区：[1]NanjingInstituteofGeologyandPaleontology,ChineseAcademyofSciences,Nanjing210008,China//DepartmentofGeographyandAnthropology,LouisianaStateUniversity,Louisiana70803,USA [2]NanjingInstituteofGeologyandPaleontology,ChineseAcademyofSciences,Nanjing210008,China [3]NanjingInstituteofLimnologyandGeography,ChineseAcademyofSciences,Nanjing210008,China [4]NanjingInstituteofGeologyandPaleontology,ChineseAcademyofSciences,Nanjing210008,China//NanjingInstituteofLimnologyandGeography,ChineseAcademyofSciences,Nanjing210008,China [5]DepartmentofGeographyandAnthropology,LouisianaStateUniversity,Louisiana70803,USA

出　　处：《Chinese Science Bulletin》2005年第6期553-562,共10页

基　　金：This work was supported by 973 Project of China(Grant No.998040810);the National Key Project for the Qinghai-Tibetan Plateau in the Eighth Five year Project of China;the National Natural Science Foundation of China(Grant Nos.49371068 and 49871078);the U.S.National Science Foundation.

摘　　要：A continuous pollen record from the Zoige Basin in the northeastern Qinghai-Tibetan Plateau not only provides information on the vegetation and climate changes during the last two glacial/interglacial cycles, but also gives proof to establish the time scale of the upper 60 m of the RM core. Subalpine spruce-fir forests colonized the Zoige Basin during the interglacials and interstadials, implying warm and wet climate conditions. Alpine periglacial desert or dry desert may have existed during the penultimate glacial and the last glacial maxima, respectively. Alpine sedge meadow dominated the landscape during MIS 4. The MIS 3 is punc- tuated by a number of stadials similar to those documented in the Guliya and GISP2 ice cores, as indicated by repeated rise and fall of subalpine spruce-fir forests. Our pollen re- cord reveals a regional climate history similar to those from the neighboring sites, including the Arabian Sea and the Guliya ice core, and thus supports the notion that the Qing- hai-Tibetan Plateau acts as an important link between cli- matic events in the North Atlantic realm and the Asian mon- soon domain.A continuous pollen record from the Zoige Basin in the northeasternQinghai-Tibetan Plateau not only provides information on the vegetation and climate changes duringthe last two glacial/interglacial cycles, but also gives proof to establish the time scale of theupper 60 m of the RM core. Subalpine spruce-fir forests colonized the Zoige Basin during theinterglacials and interstadials, implying warm and wet climate conditions. Alpine periglacial desertor dry desert may have existed during the penultimate glacial and the last glacial maxima,respectively. Alpine sedge meadow dominated the landscape during MIS 4. The MIS 3 is punctuated by anumber of stadials similar to those documented in the Guliya and GISP2 ice cores, as indicated byrepeated rise and fall of subalpine spruce-fir forests. Our pollen record reveals a regional climatehistory similar to those from the neighboring sites, including the Arabian Sea and the Guliya icecore, and thus supports the notion that the Qinghai-Tibetan Plateau acts as an important linkbetween climatic events in the North Atlantic realm and the Asian monsoon domain.

关 键 词：花粉 时标 青藏高原 气候 放射性碳法 温度 季候风 

分 类 号：P462.5[天文地球—大气科学及气象学] P425.5