雅鲁藏布江中游沙地植物区系与阿拉善荒漠植物区系的比较

从区系地理成分来看,雅鲁藏布江中游沙地植物区系以东亚成分(中国-喜马拉雅成分)占绝对优势,而阿拉善荒漠则以亚洲中部荒漠成分(即戈壁成分)占主导地位。另外,两个地区的地方特有成分的优势都十分明显,但雅鲁藏布江中游沙地中的特有种大都是在青藏高原隆起以后由于特殊的生境(高寒、干旱)而分化出来的新种,而阿拉善荒漠中的特有种大都是些古老的单种属和寡种属。雅鲁藏布江中游沙地植物区系和阿拉善荒漠植物区系都具有古老的热带起源,然而前者是在古老的第三纪热带植物区系的基础上,在高原隆升过程中经过山区特化和气候特化形成的新的年轻的区系,而后者则较多地保留了热带起源特别是古地中海起源的古老性。     

A Quaternary Timeline: a teaching tool for interpreting palaeoenvironmental, palaeoclimatic and archaeological change over the last 500,000 years

This short paper presents a case study for teaching elements of Quaternary Science to a non-specialist audience. A guided hands-on practical exercise in sedimentology and stratigraphy, palaeoenvironmental analysis and Palaeolithic archaeology was supported by the development of a ‘Quaternary Timeline’ chart, which introduces the concepts of changing climates and environments and characterises the broad expression of these changes in the terrestrial and fossil records. Using information from the practical exercises, the figure allows a step-by-step interpretation to be built up of past landscapes, including an understanding of the nature of fluvial responses to Quaternary climate change, a reconstruction of the contemporary flora and mammalian fauna and an analysis of the activities of early human populations.     

A New Zosterophyll Plant, Ramoferis gen. nov., from the Posongchong Formation of Lower Devonian (Pragian) of Southeastern Yunnan, China

A new genus and species,Ramoferis amalia gen.et sp.nov.,is described from the Early Devonian(Pragian)Posongchong Formation,Wenshan district of southeastern Yunnan,China.This plant has isodichotomous major axes,which also divide anisotomously distally to produce closely spaced lateral branches,often within fertile regions.The stalked round to reniform sporangia,borne laterally and spirally over several levels of branches,are distantly to moderately spaced or aggregated into distinct spikes.The stalks incr...     

广东南昆山与其邻近地区植物区系的比较

本文通过实地调查和有关资料的统计，对南昆山植物区系与邻近地区植物区系作了比较分析，认为其与鼎湖山，黑石顶的联系较密切，与尖峰岭，武夷山的相似性较高，而与庐山的植物区系的相似性较小。     

庐山常绿阔叶,落叶阔叶混交林的植物区系地理研究

常绿阔叶、落叶阔叶混交林是落叶和常绿阔叶林之间的过渡类型，是中亚热带的地带性植被类型之一。在庐山常绿阔叶、落叶阔叶混交林位于海拔７００－１０００ｍ之间，且分布面积狭小。该区系计有维管束植物２１４种，分属１３９属、７２科、以温带成分为主，其次为热带亚热带成分，具有明显的从亚热带向温带过渡的特征。     

Recent Environmental Change and Atmospheric Contamination on Svalbard as Recorded in Lake Sediments – Modern Limnology, Vegetation, and Pollen Deposition

Twenty-four lakes on Svalbard were sampled for palaeolimnological studies and are described in terms of their geographical location, catchment characteristics, water chemistry, and flora. No sediment could be retrieved from one of the lakes. There is a close correlation, as detected by redundancy analysis, between lake-water chemistry and catchment variables, particularly bedrock geology and geographical location for 23 lakes. The flora of the lake catchments is statistically related, as shown by canonical correspondence analysis, to bedrock geology, climate (geographical location), and nutrient status (bird impact). Modern pollen assemblages from eleven lakes contain 2–25% far-distance extra-regional pollen. The modern local and regional pollen depositions are dominated by Oxyria digyna, Poaceae, Saxifraga, Salix, and Brassicaceae pollen.     

广东罗浮山与其邻近地区植物区系的比较分析

本文对罗浮山植物区系与邻近地区植物区系作了比较分析，通过相似性指标以及计算机聚类分析的方法探讨罗浮山与邻近地区的区系关系，统计分析表明，罗浮山与鼎湖山联系较密切，与峰岭的相似性也很高，而与庐山的植物区系关系较少。     

大别山天堂寨自然保护区蕨类植物区系特征

对大别山天堂寨自然保护区蕨类植物的科、属、种分别进行统计,分析了其区系组成、区系性质和区系特点及其生态学特征。种的相似性系数分析结果表明该区与九华山、黄山、板桥山地的区系联密切,而与武夷山、长白山、秦岭的区系关系则较为疏远。在植物区第亲缘上,该区隶属东亚植物区、中国－日本森林植物亚区、华东地区。     

山西宁武煤田的大同组

宁武煤田的大同组主要由黄绿色、灰绿色砂岩、砂质泥岩、粉砂岩及泥岩组成，夹有薄层灰岩及煤层，为一套湖泊到湖泊三角洲相含煤沉积。底界置于铜川组紫红色泥岩之顶，顶界为云岗组灰绿色砂岩之底，厚２８３～４６１ｍ。本组含丰富的植物化石，可归于Ｃｏｎｉｏｐｔｅｒｉｓ－Ｐｈｏｅｎｉｃｏｐｓｉｓ植物群，时代为中侏罗世。