Sporopollen analysis of Core B10 in the southern Yellow Sea and the reflected characteristics of climate changes  

作　　者：FU Mingzuo~(1,2,3), LI Zhen~1, XU Xiaowei~1 & SHl Xuefa~1 1. Key Laboratory of Marine Sedimentology and Environmental Geology, First institute of Oceanography. State Oceanic Administration, Qingdao 266061. China 2. Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071. China 3. Graduate School, Chinese Academy of Sciences, Beijing 100039. China 

出　　处：《Chinese Science Bulletin》2003年第B06期42-48,共7页

摘　　要：Eight sporopollen zones have been divided based on the results of high-resolution sporopollen analysis of Core B10 in the southern Yellow Sea. Based on the results along with ^14C datings and the subbottom profiling data,climatic and environmental changes since the last stage of late Pleistocene are discussed. The main conclusions are drawn as follows: (1) the vegetation evolved in the process of coniferous forest-grassland containing broad-leaved trees→coniferous and broad-leaved mixed forest→coniferons and broad-leaved mixed forest-grassland prevailed by coniferous trees→coniferous and broad-leaved mixed forest-grassland containing evergreen broad-leaved trees→coniferons and broad-leaved mixed forest-grassland prevailed by broadleaved trees→deciduous broad-leaved forest-meadow containing evergreen broad-leaved trees→coniferous and broadleaved mixed forest-grassland prevailed by broad-leaved trees→coniferous and broad-leaved mixed forest containing evergreen broad-leaved trees; (2) eight stages of climate changes are identified as the cold and dry stage, the temperate and wet stage, the cold and dry stage, the warm and dry stage, the temperate and wet stage, the hot and dry stage, the temperate and dry stage, then the warm and dry stage in turn; (3) the sedimentary environment developed from land,to littoral zone, to land again, then to shore-neritic zone; and (4) the Yellow Sea Warm Current formed during early-Holocene rather than Atlantic stage.Eight sporopollen zones have been divided based on the results of high-resolution sporopollen analysis of Core B10 in the southern Yellow Sea. Based on the results along with14C datings and the subbottom profiling data, climatic and environmental changes since the last stage of late Pleistocene are discussed. The main conclusions are drawn as follows: (1) the vegetation evolved in the process of coniferous forest-grassland containing broad-leaved trees→ coniferous and broad-leaved mixed forest→ coniferous and broad-leaved mixed forest-grassland prevailed by coniferous trees→ coniferous and broad-leaved mixed forest-grassland containing evergreen broad-leaved trees→ coniferous and broad-leaved mixed forest-grassland prevailed by broadleaved trees→ deciduous broad-leaved forest-meadow containing evergreen broad-leaved trees→ coniferous and broadleaved mixed forest-grassland prevailed by broad-leaved trees→ coniferous and broad-leaved mixed forest containing evergreen broad-leaved trees; (2) eight stages of climate changes are identified as the cold and dry stage, the temperate and wet stage, the cold and dry stage, the warm and dry stage, the temperate and wet stage, the hot and dry stage, the temperate and dry stage, then the warm and dry stage in turn; (3) the sedimentary environment developed from land, to littoral zone, to land again, then to shore-neritic zone; and (4) the Yellow Sea Warm Current formed during earlyHolocene rather than Atlantic stage.

关 键 词：中国 黄海 气候变化 碳14年代测定 底基压型数据 更新世 沉积环境 大西洋 

分 类 号：P736.4[天文地球—海洋地质]