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| 1 | 花粉记录的青藏高原中部中全新世以来植被与环境显示文摘青藏高原中部的草甸/草原混合生态群落,对气候变化非常敏感.孢粉记录显示草原发育时期,莎草减少,区域气候是相对干旱的,在时间上对应季风相对弱的时期.依据唐古拉山垭口湖、阿洪错和错那3个淡水湖泊钻孔孢粉分析,定量重建的温度和降水指标,探讨该地区8200 cal a BP以来的植被与气候变化.8200~6500 cal a BP,尤其是8200~7200 cal a BP,植被以草甸/草原混合生态群落为主,显示强季风控制着青藏高原中部;6000~4900,4400~3900以及2800~2400 cal a BP时期区域植被以草原植被为主,应是3次百年尺度的干旱事件;4900~4400 cal a BP期间植被类型由草原向草甸转变;6500~5400和3000~1600 cal a BP出现两次大的变干事件;数值摸拟估计,高原中部接近于现今的环境,最早可能出现在6500cal a BP,自3000cal a BP以后高原中部季风性降水和湿度逐渐减少至现今水平,可能在700~300cal a BP出现一次小冰期变冷事件. | 唐领余 沈才明 李春海 彭金兰 刘惠 Kam-Biu Liu Carrie Morrill Jonathan T.Overpeck Jonathan E.Cole 杨保 | 2009 | 中国科学(D辑)2009,39,5: | 28 |
| 2 | Pollen-inferred vegetation and environmental changes in the central Tibetan Plateau since 8200 yr BP显示文摘The ecotone between alpine steppe and meadow in the central Tibetan Plateau is sensitive to climate changes. Here we used the pollen records from three lakes in this region to reconstruct the evolution of local vegetation and climate since 8200 cal. yr BP. The history of temperature and precipitation was reconstructed quantitatively with multi-bioclimatic indexes and a transfer function from pollen records. Results show that the steppe/meadow dominated during the period of 8200―6500 cal. yr BP, especially 8200―7200 cal. yr BP, indicating the central Tibetan Plateau was controlled by strong monsoon. The steppe dominated during the periods of 6000―4900, 4400―3900, and 2800―2400 cal. yr BP. The steppe decreased gradually and the meadow expanded during the period of 4900―4400 cal. yr BP. Three century-scale drought events occurred during 5800―4900, 4400―3900 and 2800 cal. yr BP, respectively. The first time when the regional climate shifted to the present level was at 6500 cal. yr BP in the central Plateau. Since 3000 cal. yr BP, the temperature and precipitation have decreased gradually to the present level. However, the cold climate between 700―300 cal. yr BP likely corresponds to the Little Ice Age. | LIU Kam-Biu Carrie MORRILL Jonathan T. OVERPECK Julia E. COLE | 2009 | Science China Earth Sciences2009,52,8: | 13 |
| 3 | 多种代用资料和模型模拟得到的亚洲季风在8.2ka显著气候影响的证据(英文)显示文摘Given the likelihood of future reductions in the strength of the Atlantic Meridional Overturning Circulation(AMOC),it is important to document how changes in the AMOC have altered climate patterns in the past and to assess the skill of coupled climate models in reproducing these teleconnections.Of past abrupt changes in the AMOC,the 8.2 ka event provides a particularly useful case study because its duration,magnitude of AMOC reduction and background climate state are closest to conditions expected in the future.In this research,we present an expanded proxy synthesis of the 8.2 ka event in monsoonal Asia,including new high-resolution lake and bog records,more sites from the East Asia monsoon region and proxies of winter monsoon strength.We compare proxy evidence with a new simulation of the 8.2 ka event using the Community Climate System Model version 3(CCSM3) and prescribing North Atlantic freshwater forcing according to the latest reconstructions.We find clear and objectively-determined evidence for 8.2 ka climate anomalies at nearly all of the fourteen proxy sites,emphasizing the strong and widespread impacts of the event in monsoonal Asia during both summer and winter seasons.The model simulation corroborates that these anomalies,described generally as a weakening of the summer monsoon and strengthening of the winter monsoon,were likely caused by a reduction of the AMOC.Examination of regional anomalies in East Asia reveals some spatial heterogeneity,however,that in the model simulation is caused by contraction of the seasonal migration of the subtropical monsoon front.The duration of climate anomalies at 8.2 ka in monsoonal Asia,both in proxy records and the model simulation,generally matches the duration of the event in Greenland ice core δ^(18)O,further supporting a tight connection to the North Atlantic. | MORRILL Carrie WAGNER Amy J OTTO-BLIESNER Bette L ROSENBLOOM Nan | 2011 | 地球环境学报2011,2,3: | 3 |
| 4 | Environmental change implied by the relationship between pollen assemblages and grain-size in N.W. Chinese lake sediments since the Late Glacial显示文摘 | Yu Li Nai’ang Wang Carrie Morrill Hongyi Cheng Hao Long Qiang Zhao | 2008 | Review of Palaeobotany and Palynology2008,,1: | 1 |
| 5 | Holocene variations in the Asian monsoon inferred from the geochemistry of lake sediments in central Tibet显示文摘 | Carrie Morrill Jonathan T. Overpeck Julia E. Cole Kam-biu Liu Caiming Shen Lingyu Tang | 2005 | Quaternary Research2005,,2: | 1 |
| 6 | Causes of early Holocene desertification in arid central Asia显示文摘 | Liya Jin Fahu Chen Carrie Morrill Bette L. Otto-Bliesner Nan Rosenbloom | 2012 | Climate Dynamics (-)2012,,7: | 1 |
| 7 | Causes of early Holocene desertification in arid central Asia显示文摘 | Liya Jin Fahu Chen Carrie Morrill Bette L. Otto-Bliesner Nan Rosenbloom | 2012 | Climate Dynamics (-)2012,,7: | 1 |
| 8 | Multiple factors causing Holocene lake-level change in monsoonal and arid central Asia as identified by model experiments显示文摘 | Yu Li Carrie Morrill | 2010 | Climate Dynamics2010,,6: | 1 |