浙江省藓类植物新记录

在对浙江省杭州市苔藓植物广泛调查采集和标本鉴定的基础上，发现并报道中国新记录种1个,小细罗藓(Leskeella pusilla (Mitt.) Nog.)；浙江省新记录属1个,赤藓属(Syntrichia)；新记录种4个,高山赤藓Syntrichia sinensis (C.Müll.) Ochyra，狭叶立碗藓(Physcomitrium coorgense Broth.)，东亚细枝藓(Lindbergia japonica Card.)和东亚小羽藓(Haplocladium strictulum (Card.) Reim.).对它们的主要特征、生境和地理分布进行了初步讨论，并提供了小细罗藓及东亚细枝藓的形态特征图.     

贵阳市刺槐(Robinia pseudoacacia L.)树附生苔藓植物初步调查

在"林城"贵阳,贵阳市行政区域内现有林地面积18.3万hm2,森林覆盖率为31.7%,森林覆盖率较高。树附生苔藓植物因其特殊性是可以作为城市大气污染的指示植物。树附生苔藓在贵阳分布较广泛,其中以作为贵阳市行道树或栽种树的刺槐树(Robinia pseudoacacia L.)最为典型。在贵州师范大学、花溪公园以及黔灵公园3个地点共选取了13棵刺槐树进行野外生态调查。结果发现了树附生苔藓植物8科12属14种。常见种为全缘刺疣藓Trichosteleum lutschianum(Broth.et Par.)Broth.、平锦藓Platygyrium repens(Brid.)B.S.G.、细叶小羽藓Haplocladium microphyllum(Hedw.)Broth.、矮锦藓Sematophyllum subhumile(C.Muell.)Fleisch.、真藓Bryum ar-genteumHedw.、异叶红叶藓Bryoerthrophyllum hostile(Herz.)Che和纤枝短月藓Brachymenium exile(Doz.etMolk.)Bosch et Lac.等。优势科为真藓科,其次是灰藓科,分别占总数的50%和37.5%。生活型只有矮丛集型和交织型。本次对贵阳市刺槐树附生苔藓的初步调查为进一步深入研究贵阳市树附生苔藓的多样性提供了基础资料。也是对将来监测贵阳市大气污染迈出的重要的第一步。     

天马自然保护区苔藓植物区系研究

通过调查,天马自然保护区共有苔藓植物50科94属176种.保护区优势科为真藓科Bryaceae、曲尾藓科Dicranaceae、青藓科Brachytheciaceae、灰藓科Hypnaceae、提灯藓科Mniaceae、光萼苔科Porellaceae、锦藓科Sematophyllaceae、金发藓科Polytrichaceae、羽藓科Thuidiaceae和绢藓科Entodontaceae;优势属为光萼苔属Porella、曲柄藓属Campylopus、凤尾藓属Fissidens、真藓属Bryum、匐灯藓属Plagiomnium、泽藓属Philonotis和绢藓属Entodon.区系成分以东亚成分为主(37.04%),温带成分次之(33.33%),热带成分较少(25.31%).     

苔藓植物对石家庄市区大气污染的指示作用研究

以地面土生或树干附生苔藓植物的种类、分布及生长情况为指标,研究了苔藓植物对石家庄市区大气污染状况的指示作用.实验在全市共布30个样点,对每个样点进行了样方测定和IAP(大气净度指数)值计算.同时,采集标本370余号.经鉴定,石家庄市区内共有苔藓植物9科、24属、44种.结果显示:严重污染的区域苔藓种类少于4种,IAP<5;轻度污染的区域苔藓种类少于6种,IAP<11;相对清洁区苔藓植物少于12种,IAP<19;清洁区苔藓植物多于13种,IAP>23.选择在市区分布范围较广、生长良好、对大气污染反应比较敏感的苔藓植物种类作为监测大气污染的指示植物,主要种类有葫芦藓(FunariahygrometricaHedw.)、小扭口藓(Semibarbulaindica(Hook.)Herz.exHilp.)、扭口藓(BarbulaunguiculataHedw.)、墙藓(Tortulamu ralisHedw.)、真藓(BryumargenteumHedw.)、丛生真藓(BryumcaespiticiumHedw.)和红蒴立碗藓(PhyscomitriumeurystomumSendtn.)等.     

5种苔藓植物水提液对黄瓜种子萌发及幼苗生理特性的影响

为研究苔藓植物对作物种子萌发及幼苗生理特性的影响,以弯叶白发藓(Leucobryum aduncum)、灰羽藓(Thuidium glaucinum)、脆叶锦叶藓(D icranoloma fragile)、短叶剪叶苔(Herbertus sendtneri)和透明叶苔(Junger-mannia hyalina)不同浓度的水提液培养黄瓜种子,测定了5种苔藓植物水提液对黄瓜种子萌发率、幼苗根和芽的生长量与鲜重、叶绿素、可溶性糖的含量等指标的影响。结果表明:5种苔藓水提液在一定浓度下可不同程度地促进黄瓜幼苗根和芽的生长,短叶剪叶苔能够提高黄瓜幼苗叶绿素的含量,灰羽藓、脆叶锦叶藓、短叶剪叶苔和透明叶苔可提高黄瓜幼苗可溶性糖的含量。     

黄土高原藓类植物分布新记录

目的分析陕西子午岭自然保护区藓类植物区系组成及分布类型。方法野外采集和室内鉴定。结果发现黄土高原藓类植物3个新纪录属,8个新记录种及1个新记录变种,其中曲喙藓属Rhamphidium Mitt.、小叶藓属Epipterygium Lindb.、毛灰藓属Homomallium(Schimp.)Loesk.为新记录属,粗肋曲喙藓Rhamphidium crassicostom Li、紫色小叶藓Epipterygium tozeri(Grev.)Lindb、狭边大叶藓Rhodobryum Spathulatum(Horonsch.)Pocs、小羽藓Haplocladium capillatum(Mitt.)Broth.、多态细湿藓Campylium protensum(Bird.)kindb.、毛尖青藓Brachythecium piligerum Card、密叶尖喙藓Oxyrrhynchium savatieri(Besch.)Broth.、毛灰藓Homomallium incurvatum(Bird.)Loesk.为新记录种,尖叶提灯藓厚角变种Minium cuspidatum Hedw.Var.trichomanes(Mitt.)Chen ex Li etZhang为一个新纪录的变种。结论该记录丰富了中国藓类植物区系的划分,为黄土高原藓类植物的研究提供了基础资料。     

内蒙古乌兰坝-石棚沟自然保护区苔藓植物区系研究

首次报道了内蒙古乌兰坝-石棚沟自然保护区苔藓植物39科、86属、181种(含1亚种,5变种),其中内蒙古新记录6种,中国新记录4种:长柄紫萼藓Grimmia longirostris Hook.,毛尖连轴藓Schistidium lancifolium(Kindb.)Blom.,平叶真藓Bryum laevifilum Syed.,凹叶毛灰藓Homomallium adnatum(Hedw.)Broth.从种类组成、区系地理成分、地区之间苔藓植物区系的比较等方面对该区苔藓植物区系进行了分析.结果表明:丛藓科Pottiaceae、真藓科Bryaceae、灰藓科Hypnaceae等旱生藓类在保护区占有优势地位,真藓属Bryum、匐灯藓属Plagiomnium、紫萼藓属Grimmia为保护区的主要优势属,本区区系地理成分主要是以北温带成分为主(50.83%),其次为世界广布成分(16.02%)和东亚成分(14.36%).本区与赛罕乌拉自然保护区和七老图山的属、种相似性系数高,体现了蒙新区、东北区和华北区交汇过渡地带的特点.     

碧水丹山生苍苔

正苔藓是植物王国中的小矮人,踪迹几乎遍布全球,它们是植物从水生过渡到陆生的代表,对于生态环境的作用亦不可小觑。在贵州习水的密林深处,生活着几种特别的苔藓,比如练就储水神功的泥炭藓、珍稀的东亚虾藓、"机智如我"的紫背苔以及善于装点自己的颜值控——溪苔。怎么样,你是否也期待着与苔藓植物来一次约会呢?     

山东水灰藓属Hygrohypnum Lindb.苔藓植物研究

山东曾报道分布有水灰藓属Hygrohypnum Lindb.植物4种,分别是水灰藓H. luridum (Hedw.) Jenn.,山地水灰藓H. montanum (Lindb.) Broth.,褐黄水灰藓H. ochraceum (Wilson) Loeske和钝叶水灰藓H. smithii (Sw.) Broth..通过鉴定和检视采自于山东的318号该类群植物标本,发现山东新记录种一个,即扭叶水灰藓H. eugyrium (BruchSchimp.) Broth.;发现钝叶水灰藓实为水生长喙藓Rhynchostegium raparioides (Hedw.)Cardot误定,因将该种从山东苔藓植物区系中剔除;山地水灰藓相关标本未见,因将该种存疑.明确山东现分布有该属植物3种,即扭叶水灰藓、水灰藓和褐黄水灰藓,对它们的主要鉴别特征进行了描述,并对它们的生境特点和分布范围等进行了讨论,提供了墨线图和生境照片.     

内蒙古额尔古纳国家自然保护区苔藓植物区系研究

在对额尔古纳国家自然保护区进行苔藓区系的调查研究中,发现苔藓植物共42科83属181种(包括种以下单位,下同),包括苔纲植物17科18属26种,藓纲植物25科65属155种,其中东北新纪录种6种.以5种及以上为优势科,当地苔藓植物优势科共11科.该地区系成分以北温带成分为主,占到73.2％,其次为东亚成分和东亚-北美洲成分,分别占到8.9％和5.1％.额尔古纳国家自然保护区苔藓区系成分情况与其地理位置相符.     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with