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ovegetation reconstructions than have hithertobeen possible. In particular, this improved taxonomicresolution holds promise for resolvinglong-standing controversies over the interpretationof key Amazonian Quaternary pollen records.2008040050中 阿 尔 卑 斯 地 区 山 谷 植 被 花 粉 代 表 性 的 探 索研 究 = A pilot study on pollen representation ofmountain valley vegetation in the central Alps.( 英 文 ). Sjögren P; van der Knaap W O; Kaplan JO; van Leeuwen J F N; Ammann B. Review ofPalaeobotany and Palynology, 2008, 149(3-4):208-218The relative pollen productivity (RPP) ofPinus cembra, Larix, Picea, Gramineae, andCyperaceae was estimated for the Upper Engadinearea, an inner-alpine sub-continental valleyin SE Switzerland lying above 1800 m a.s.l. Theinflux of pollen originating from lowlands wasassumed constant between the investigated sitesand could thus be used to establish relative pollenaccumulation rates (rPAR) as a basis for furthercalculations. Wind above the canopy wasassumed as the major mode of pollen transportand the effect of different wind speeds wastested. In order to evaluate the results pollen percentagevalues were simulated and comparedwith the empirical data. The method is sufficientlyaccurate for evaluation of spatiallyexplicitvegetation models, although the lownumber of sites eludes robust statistical testing.2008040051决 定 西 亚 草 场 不 同 空 间 尺 度 花 粉 分 布 的 因 素= Determinants of pollen dispersal in the EastAsian steppe at different spatial scales. ( 英 文 ).Liu Hongyan; Wei Fangling; Liu Kan; ZhuJiangling; Wang Hongya. Review of Palaeobotanyand Palynology, 2008, 149(3-4):219-228Two sites from the East Asian steppe, the MuUs Sandland as a regional case and the AnguliNuur catchment as a local one, were chosen todetect roles of vegetation, climate, landform, andhuman disturbance on pollen dispersal. 1) Vegetation:The semi-arid steppe vegetation is characterizedby Artemisia and Chenopodiaceae pollenunder various vegetation conditions; however,no evident correlation between pollen percentagesand corresponding plant species coveris found. 2) Climate: Samples under differentMean Annual Precipitations (MAPs) clearly distinguishthemselves in the Mu Us Sandland, implyingMAP-determined surface pollen spectrain regional scale. 3) Landform: Surface pollenassemblages in the azonal psammophytic vegetationand lowland meadow, show insignificantvariance from the zonal steppe vegetation. Theazonal halophilous vegetation, mostly distributedin the lowland or near the lake shore, leads tohigher than average percentages of Chenopodiaceaepollen. Signal of exotic Pinus pollen isalso strengthened in the lowland and lake sediment.4) Human disturbance: The role of humandisturbance on surface pollen assemblages isweak, as shown in the Mu Us Sandland.2008040052中 始 新 世 火 山 地 区 植 被 的 初 级 演 替 : 德 国Messel 地 区 玛 珥 湖 形 成 初 期 的 定 量 孢 粉 学 研究 = Recolonization of a Middle Eocene volcanicsite: quantitative palynology of the initialphase of the maar lake of Messel (Germany). ( 英文 ). Lenz O K; Wilde V; Riegel W. Review ofPalaeobotany and Palynology, 2007, 145(3-4):217-242The research well “Messel 2001” penetratedthe sediments of the Middle Eocene maar lake atMessel (near Darmstadt, Hesse, Germany) completely.The core includes 140 m of lacustrineoil-shale overlying 90 m of clastic lake sedimentswhich are assigned to the Middle andLower Messel Formation, respectively. Numericaltechniques like TWINSPAN and correspondenceanalysis have been applied to a highresolutionpalynological study. The Lower MesselFormation is equivalent to the Initial LakePhase and shows a clear succession of pollenand spore associations representing a successionof plant communities colonizing and invadingthe area which was previously devastated by theeruption(s). On the basis of the TWINSPAN, anEarly and a Late Initial Lake Phase may be distinguished.But, throughout the Initial LakePhase, the regional climax vegetation did notchange substantially and had re-occupied thearea finally at a time roughly representing theboundary between the Lower and the MiddleMessel Formation.2008040053辨 别 常 绿 与 落 叶 栎 属 花 粉 化 石 : 华 东 中 新 世个 案 分 析 = Discriminating fossil evergreen anddeciduous Quercus pollen: A case study from theMiocene of eastern China. ( 英 文 ). Liu C Y-S;Zetter R; Ferguson D K; Mohr B A R. Review ofPalaeobotany and Palynology, 2007, 145(3-4):289-303In palaeopalynology oaks are rarely identifiedbeyond the generic level. In order to recognizefossil evergreen and deciduous oak pollen, wecompiled distinguishing criteria from the literature,most under the SEM, on the living oaks.One of the most significant criteria is the natureof the sculpturing under the SEM. Evergreen oakpollen exhibit at least four kinds of sculpturing,viz. rod-like elements, uniformly fine granules,17