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42篇 您的检索式:作者名="Beaudouin"
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1新疆地区表土孢粉分布规律及其与植被关系研究显示文摘对中国新疆地区218个样点进行植被调查及表土孢粉分析的研究结果表明,新疆地区温带山地针叶林、高寒草甸及盐生草甸、温带草原、荒漠以及荒漠-沙漠过渡带均具有相对特殊的孢粉组合,新疆南北向样带的孢粉图式揭示出表土孢粉从北到南随地形、纬度和植被的改变而发生的空间变化。针叶林区表土孢粉浓度平均值为22 602粒/g、草原为3 834粒/g、荒漠为1 762粒/g、沙漠为0-10粒/g。但在同一植被类型中,特别是在草原和荒漠中,孢粉浓度与植被盖度之间并不呈现线性相关关系。根据大空间尺度样品的A/C(蒿Artemisia/藜Chenopodiaceae)值的中位数统计,草原为1.264、荒漠为0.565、沙漠为0.243。Ep/C(麻黄Ephedra/藜Chenopodiaceae)比值的中位数在荒漠为0.098、草原为0.063。罗传秀 郑卓 潘安定 安放舟 Celia BEAUDOUIN 黄康有 2007干旱区地理2007,30,4:32
2新疆地区表土孢粉空间分布规律研究显示文摘中国新疆地区表土花粉研究结果展示了干旱区主要孢粉的空间分布规律,大部分表土花粉属种的地理空间分布与含量与相应植物的分布区域基本一致,藜科、蒿属、麻黄属及木本植物云杉属、桦木属等花粉普遍呈超代表性,柽柳属花粉呈低代表性。干旱区主要草灌木表土花粉数据的聚类分析结果可以基本反映本区植物群落的主要生态组合类型。主成分分析进一步表明该区草本和灌木花粉分布主要受水文和湿度等因素控制。罗传秀 郑卓 潘安定 安放舟 BEAUDOUIN Celia 黄康有 2008地理科学2008,28,2:34
3中国表土花粉与建群植物地理分布的气候指示性对比显示文摘利用中国建群植物数字化的地理分布数据与1860个中国表土样品花粉数据和气候插值定量分析了中国主要花粉含量与植物种类的地理分布和气候指示性.研究结果显示,绝大多数表土花粉含量的气候指示性与建群植物地理分布的气候区间是吻合的,表土花粉与建群植物的气候阈值的重合取决于花粉与气候的正态分布关系.此外,部分花粉种类指示的气候相对于植物存在一定的偏移,如杜鹃花科、菊科、禾本科和藜科等,这与花粉的分类鉴定水平较低和自然植被的人为干扰有关.本研究在较大空间尺度范围内将表土花粉与建群植物的气候指示性进行对比,为全球生态学、第四纪环境和古气候学研究提供了重要的数据和参照.郑卓 黄康有 许清海 吕厚远 Rachid Cheddadi 罗运利 Celia Beaudouin 罗传秀 郑艳伟 李春海 魏金辉 杜春彬 2008中国科学(D辑)2008,38,6:32
4Comparison of climatic threshold of geographical distribution between dominant plants and surface pollen in China显示文摘The geographical distribution of dominant plant species in China was georeferenced and climatic variables were interpolated into all grids.Accordingly,the percentage distributions of principal pollen taxa based on 1860 surface pollen sites in China were selected and the related climate values were interpolated with the same method. The geographical and climatic comparison between the two data-sets indicated that the climate threshold of most pollen taxa from surface pollen is coherent with plant distributions. The climatic envelopes of dominant plant are mostly accordant with those of pollen taxa at certain levels. However, some distinct offsets of the climate ranges exist between the two datasets for most pollen taxa identified at family level, such as Ericaceae,Asteraceae, Poaceae and Chenopodiaceae. The present study provides for the first time rich information on temperature and precipitation in relation to pollen and plant distribution based on the datasets on a continental scale useful for global ecological modeling and Quaternary palaeoclimate reconstruction.CHEDDADI Rachid BEAUDOUIN Celia 2008Science China Earth Sciences2008,51,8:26
5中国及其邻区现代孢粉数据:空间分布特征和定量古环境重建中的应用显示文摘现代孢粉数据及其关联的古环境信息是第四纪孢粉定量气候重建的基础,本研究对中国及其邻近区域现代孢粉进行了补充采样与分析鉴定和数据收集,初步建立了较大尺度的东亚地区孢粉数据库。该数据库现拥有2858个现代样点和孢粉谱数据,覆盖的国家和地区包括中国、蒙古、日本、越南、柬埔寨、泰国、印度、俄罗斯远东部分地区以及东海和南中国海海域。数据库的孢粉种类数为729个,本文对48个代表性的孢粉类型进行了等值线作图,其结果清晰显示出绝大部分孢粉的地理分布范围明确,与相关植被和气候具有紧密的关系。本研究对该数据集进行了最佳类比法重建气候可行性的验证,结果表明无论年降雨和年平均温度,重建结果都具有较高的可信度,与观测值的相关系数均达到0.9以上。该研究首次展示覆盖东亚区域的大陆尺度孢粉空间分布特征,并检验了数据资料用于气候重建的可行性,本研究提供的现代孢粉数据将有利于提高第四纪孢粉定量气候解释的研究水平。郑卓 黄康有 魏金辉 乐远福 万秋池 许清海 吕厚远 罗运利 罗传秀 郑艳伟 李春海 杨士雄 李杰 潘安定 邓韫 魏海成 C. Beaudouin P. Tarasov T. Nakagawa R. Cheddadi 2013第四纪研究2013,33,6:26
6基于遥感数据对中国表土花粉进行植被覆盖度定量估算的研究显示文摘本文主要探讨利用现代类比法将表土花粉数据定量转换为植被覆盖度的方法,以及该方法在中国复杂地貌和气候环境中应用的可行性和可信度。陆地植被覆盖使用了卫星遥感MODIS500×500m分辨率的栅格数据,覆盖度分类为乔木、草地和裸地三种。使用的表土花粉数据共1127个样点,其地理分布基本能够覆盖中国的各种植被类型。用于现代类比法定量计算的花粉变量类型共64个。研究结果表明,计算获得的每个样点的植被覆盖度与MODIS实际观测值具有很好的对应性,基于花粉的覆盖度估算值与遥感实际观测值之间的相关性很高,其中裸地达到0.99,乔木达到0.97,草地为0.95。从空间分布看,利用花粉定量转换的植被覆盖样点可以清楚地识别从裸地向草地和乔木的变化区间,并且与植被分布的实际情况吻合。本研究证明,基于中国表土花粉数据对植被覆盖度的定量恢复是可行的。此外,研究发现乔木覆盖度较高的对应特征花粉较多,主要是松属、栲属、栎属(含青冈栎)、桦属、桤木属、杨梅属、冷杉属、云杉属等,而草地的对应特征花粉类型有莎草科、禾本科、蒿属、蔷薇科、豆科等,裸地主要为麻黄属和藜科等。郑卓 郑艳伟 黄康有 魏金辉 许清海 吕厚远 罗运利 罗传秀 Celia Beaudouin 2009古生物学报2009,48,2:12
7Dust pollen distribution on a continental scale and its relation to present-day vegetation along north-south transects in east China显示文摘A series of dust pollen samples was collected along N-S transects in east China (18°N to 53°N latitudes). Sample sites extend from the cold-temperate zone in the north to the tropical region in the south. Pollen taxa characterize each region and reflect the natural and devastated vegetation as well as corre- sponding climatic zones. The quantitative pollen data can be used to estimate the spatial distribution of planted and introduced species. Valuable information of human disturbance of the natural forest is evaluated by quantitative comparison between dust pollen and in-situ pollen of protected forest. In addition, percentages of grass pollen vary regularly from north to south that is consistent with spatial distribution of net primary productivity in east China. Among all grasses, Artemisia and the Gramineae carry the clearest signal: their ratio increases northwards and therefore represent a suitable and con- venient tool for palaeoclimate reconstructions.P. COUR D. DUZER G. ROBERT M. CALLEJA C. BEAUDOUIN 2007Science China Earth Sciences2007,50,2:6
8Prolonged persistence of substantial volumes of potentially viable brain tissue after stroke:a correlative PET-CT study with voxel-based data analysis显示文摘 Beaudouin V Rioux P 1996Stroke1996,27,:1
9Effect of phlogopite mica on alkali-aggregate expansion in concrete 显示文摘GRATTAN-BELLEW P E BEAUDOUIN J J 1980Cem Concr Res1980,10,6:1
10NuSAP, a novel microtubule-associated protein involved in mitotic spindle organization显示文摘Raemaekers T Ribbeck K Beaudouin J 2003J Cell Biol2003,162,6:1
11Prolong persistence of substantial volumes of potentially viable brain tissue after stroke:a correlative PET-CT study with voxel-based data analysis显示文摘Marchal G Beaudouin V Rioux P 1996Stoke1996,27,4:1
12IgE-mediated allergy to granisetron and safe use of ondansetronl显示文摘Kanny G Beaudouin E Moneret Vautrin A 2001Jallergy Clin Immunol2001,108,6:1
13Prolonged persistence of substantial volumes of potentially viable brain tissue after stroke: a correlative PET-CT study with voxelbaseddata analysis显示文摘Marehal G Beaudouin V Rioux P 1996Stroke1996,27,4:1
14Prolonged persistence of substantial volumes of potentially viable brain tissue after stroke:A correlative PET-CT study with voxel-based data analysis 显示文摘Marchal G Beaudouin Y Roup 1996Stroke1996,27,4:1
15Caspase-8 cleaves its substrates from the plasma membrane upon CD95-induced apoptosis显示文摘Beaudouin J Liesche C Aschenbrenner S 2013Cell Death Differ2013,20,4:1
16IgE-mediated allergy to granisetron and safe use of ondansetron显示文摘Kanny G Beaudouin E Moneret-Vautrin DA 2001The Journal of Allergy and Clinical Immunology2001,108,6:1
17Model-based dis- section of CD95 signaling dynamics reveals both a pro- and antiapoptotic role of c-FLIPL 显示文摘Fricker N Beaudouin J Richter P 2010J Cell Biol2010,190,3:1
18Prolong Persistence of substantial volumes of potentially viable brain tissue after stroke: acorrelative PET-CT study with voxel-based sata analysis显示文摘Marchal G Beaudouin Y Rioux P 1996Stroke1996,27,4:1
19Intra-and interdimeric caspase-8 self-cleavage controls strength and timing of CD95-in- duced apoptosis 显示文摘Kallenberger SM Beaudouin J Claus J 2014Sci Signal2014,7,316:1
20Model-based dissection of CD95 signaling dynamics reveals both a pro-and antiapoptotic role of c-FLIPL显示文摘Fricker N Beaudouin J Richter P 0,,03:1
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