%0 Journal Article %T 鄱阳湖湖口地区4500年来孢粉组合及古气候变迁 %T Pollen assemblage and paleoclimatic change in hukou area of poyang lake for the past 4 500 years %A 吴艳宏 %A 羊向东 %A 朱海虹 %A Wu Yanhong %A Yang Xiangdong %A Zhu Haihong %J 湖泊科学 %J Journal of Lake Sciences %@ 1003-5427 %V 9 %N 1 %D 1997 %P 29-34 %K 孢粉组合;古植被;古气候;鄱阳湖 %K Poyang Lake;pollen assemblage;paleoclimate;palcovcgctation %X 通过对鄱阳湖湖口梅家刘ZK2孔沉积物的孢粉分析研究,初步恢复了4500年来湖口地区的古植被演替及古气候变迁历史.其古气候变化经历了以下几个阶段:4.5-3.8kaB.P,气候暖湿;3.8-3.4kaBP,气候凉偏干;3.4-3.0kaB.P,气候温暖偏湿;3.0kaB.P.前后,为一短暂的降温时期,气候凉湿;2.8-2.35kaB.P,气候温暖偏湿;2.35kaBP.以来,气候偏凉,但仍存在数次微弱的冷暖波动. %X Pollen assemblages of profile ZK2 (116°12'50"E, 29°44'30"N, 7.83m a. s. 1.) are studied to reconstruct the paleoclimate of Hukou arca, Poyang Lake. According to the pollen diagram, 8 assemblage zones have been distinguished in an ascending order as follows; Ⅰa, Pinus-Quercus-Liqidamber(20.2-17.6m); Ⅰb, Pinus-Cyclobalanoopsis(17.6-16m); Ⅱ, Pinus-Microlepia (16-13.7m); Ⅲa, Pinus-Castaneae-Cyclotbalanoopisis (13.7-11.2 m); Ⅲb, Pinus-Microlepia (11.2-10.5m); Ⅲc, Pinus-CycLobanlanoopsis (10.5-7.5m); Ⅳ, Pinus-Pteris-Gamineae(7.5-2.0 m); Ⅴ, Pinus-Microlepiu (2.0-0m). Based on the above statement, 6 phases of climate fluctuation were shown in the past 4 500 years:4.5~3.8kaB. P., warm and wet; 3.8~3.4kaB. P., cool and little dry; 3.4-3. OkaB. P., warm and little dry;around 3. OkaB. P., cool and wei; 2.8-2.3kaB. P., warm and wcl; 2.3kaB. P.-present, fluctuated frequently. %R 10.18307/1997.0105 %U http://www.jlakes.org/ch/reader/view_abstract.aspx %1 JIS Version 3.0.0