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Taxonomy of Two New Peritrich Ciliates(Protozoa:Ciliophora)from Inland Saltwaters of China
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作者 YU Ying ZHANG Yong +2 位作者 LIANG Ziyao LI Jiqiu LIN Xiaofeng 《Journal of Ocean University of China》 SCIE CAS CSCD 2024年第3期811-821,共11页
The inland saltwater lakes harbor exceptional biodiversity.Here,two new species of solitary sessile peritrich ciliates were isolated from Qinghai Lake,the largest inland saltwater lake in China.Their morphology,ciliat... The inland saltwater lakes harbor exceptional biodiversity.Here,two new species of solitary sessile peritrich ciliates were isolated from Qinghai Lake,the largest inland saltwater lake in China.Their morphology,ciliature,silverline system,and molecular phylogeny were investigated based on live observation,silver staining,and analysis of the small subunit ribosomal DNA(SSU rDNA).Vorticella paraglobosa sp.n.is characterized mainly by its obconical or elongate bell-shaped zooid,C-shaped macronucleus,single ventrally located contractile vacuole,two-rowed infundibular polykinety 3,and 28-38 silverlines between peristome and aboral tro-chal band and 10-15 between aboral trochal band and scopula.Vorticella cotyliformis sp.n.differs from its congeners mainly by its double-layered peristomial lip,cup-shaped zooid,J-shaped macronucleus,single ventrally positioned contractile vacuole,three-rowed infundibular polykinety 3,and 70-85 silverlines between peristome and aboral trochal band and 21-25 between aboral trochal band and scopula.The SSU rDNA sequences of the two new species were obtained,and the subsequent molecular phylogenetic analysis supported their taxonomic classification. 展开更多
关键词 molecular phylogeny morphology new species Qinghai Lake taxonomy
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Molecular phylogeny and taxonomy of Phlomoides(Lamiaceae subfamily Lamioideae)in China:Insights from molecular and morphological data
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作者 Yue Zhao Ya-Ping Chen +8 位作者 Bryan T.Drew Fei Zhao Maryam Almasi Orzimat T.Turginov Jin-Fei Xiao Abdul G.Karimi Yasaman Salmaki Xiang-Qin Yu Chun-Lei Xiang 《Plant Diversity》 SCIE CAS CSCD 2024年第4期462-475,共14页
Phlomoides,with 150-170 species,is the second largest and perhaps most taxonomically challenging genus within the subfamily Lamioideae(Lamiaceae).With about 60 species,China is one of three major biodiversity centers ... Phlomoides,with 150-170 species,is the second largest and perhaps most taxonomically challenging genus within the subfamily Lamioideae(Lamiaceae).With about 60 species,China is one of three major biodiversity centers of Phlomoides.Although some Phlomoides species from China have been included in previous molecular phylogenetic studies,a robust and broad phylogeny of this lineage has yet to be completed.Moreover,given the myriad new additions to the genus,the existing infrageneric classification needs to be evaluated and revised.Here,we combine molecular and morphological data to investigate relationships within Phlomoides,with a focus on Chinese species.We observed that plastid DNA sequences can resolve relationships within Phlomoides better than nuclear ribosomal internal and external transcribed spacer regions(nrITS and nrETS).Molecular phylogenetic analyses confirm the monophyly of Phlomoides,but most previously defined infrageneric groups are not monophyletic.In addition,morphological analysis demonstrates the significant taxonomic value of eight characters to the genus.Based on our molecular phylogenetic analyses and morphological data,we establish a novel section Notochaete within Phlomoides,and propose three new combinations as well as three new synonyms.This study presents the first molecular phylogenetic analyses of Phlomoides in which taxa representative of the entire genus are included,and highlights the phylogenetic and taxonomic value of several morphological characters from species of Phlomoides from China.Our study suggests that a taxonomic revision and reclassification for the entire genus is necessary in the future. 展开更多
关键词 Lamioideae Molecular phylogenetics MORPHOLOGY Phlomideae taxonomy
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The Black-winged Monarch(Monarcha frater):Geographic variation,taxonomy,a"new"population,and an enduring mystery in migration
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作者 Leo Joseph Julian Teh +1 位作者 Paul Sweet Phil Gregory 《Avian Research》 SCIE CSCD 2023年第3期467-477,共11页
The Black-winged Monarch(Monarcha frater)inhabits low-mid elevation forests across New Guinea and far northeastern Australia.Of its four recognized subspecies,M.f.canescens is migratory,breeding in tropical north-east... The Black-winged Monarch(Monarcha frater)inhabits low-mid elevation forests across New Guinea and far northeastern Australia.Of its four recognized subspecies,M.f.canescens is migratory,breeding in tropical north-eastern Australia from approximately November–March.The non-breeding range of M.f.canescens,apart from some individuals overwintering in Australia,has been unknown for>100 years.Data from 194 New Guinean and Australian specimens and a literature review have not solved this mystery;the narrow latitudinal range of the intratropical migration may inhibit use of GPS loggers in resolving the migration route.Field work in central and western parts of southern New Guinea is needed.Specimen data,however,revealed an essentially overlooked population in north-western New Guinea east of the Bird's Head Peninsula phenotypically indistinguishable from nominate M.f.frater of that Peninsula.Future genomic analysis of the complex will be largely done from toepad skin because frozen tissue samples for DNA analysis exist only of four individuals of what we suggest should be elevated to species rank as M.periophthalmicus.We discuss how genomic analysis might distinguish among alternative taxonomic hypotheses of one,two or three species.We suggest English names for what we consider to be three diagnosable taxa worth recognizing at species rank in this group:Arfak Monarch corresponding to M.frater(Bird's Head Peninsula and the“new”population of north-western New Guinea);Pearly Monarch for M.canescens(Australia and still unknown non-breeding range),and Masked Monarch for M.periophthalmicus(including kunupi,elsewhere in New Guinea). 展开更多
关键词 AUSTRALIA MIGRATION monarch flycatcher Monarcha frater New Guinea taxonomy
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Phylogenomics and integrative taxonomy reveal two new species of Amana(Liliaceae)
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作者 Mei-Zhen Wang Xiao-Kai Fan +10 位作者 Yong-Hua Zhang Jing Wu Li-Mi Mao Sheng-Lu Zhang Min-Qi Cai Ming-Hong Li Zhang-Shi-Chang Zhu Ming-Shui Zhao Lu-Xian Liu Kenneth M.Cameron Pan Li 《Plant Diversity》 SCIE CAS CSCD 2023年第1期54-68,共15页
Until now the genus Amana(Liliaceae),known as ’East Asian tulips’,has contained just seven species.In this study,a phylogenomic and integrative taxonomic approach was used to reveal two new species,Amana nanyueensis... Until now the genus Amana(Liliaceae),known as ’East Asian tulips’,has contained just seven species.In this study,a phylogenomic and integrative taxonomic approach was used to reveal two new species,Amana nanyueensis from Central China and A.tianmuensis from East China.A.nanyueensis resembles Amana edulis in possessing a densely villous-woolly bulb tunic and two opposite bracts,but differs in its leaves and anthers.Amana tianmuensis resembles Amana erythronioides in possessing three verticillate bracts and yellow anthers,but differs in aspects of its leaves and bulbs.These four species are clearly separated from each other in principal components analysis based on morphology.Phylogenomic analyses based on plastid CDS further support the species delimitation of A.nanyueensis and A.tianmuensis and suggests they are closely related to A.edulis.Cytological analysis shows that A.nanyueensis and A tianmuensis are both diploid(2n=2x=24),different from A edulis,which is either diploid(northern populations) or tetraploid(southern populations,2n=4x=48).The pollen morphology of A.nanyueensis is similar to other Amana species(single-groove germination aperture),but A.tianmuensis is quite different because of the presence of a sulcus membrane,which creates the illusion of double grooves.Ecological niche modelling also revealed a niche differentiation between A.edulis,A.nanyueensis and A.tianmuensis. 展开更多
关键词 Amana edulis Parallel evolution PHYLOGENY Species concept taxonomy Tulip
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EU Taxonomy:Overview of All“Green”Economic Activities as of June 2023
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作者 Knut Henkel Jenny Lay-Kumar 《Journal of Modern Accounting and Auditing》 2023年第3期73-81,共9页
In June,the EU Commission published an update of the economic activities that can be classified as“green”.The article provides an updated tabular overview of now 152 economic activities in total,covering 17 sectors.... In June,the EU Commission published an update of the economic activities that can be classified as“green”.The article provides an updated tabular overview of now 152 economic activities in total,covering 17 sectors.In particular,the table shows in which of the four different delegated regulations the technical screening criteria for the economic activities are located.These are necessary in order to determine whether a concrete economic activity is taxonomy aligned. 展开更多
关键词 EU sustainable finance taxonomy green SUSTAINABILITY OVERVIEW economic activities CSRD ESRS
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Taxonomy characterization and cadmium biosorption of fungus strain 被引量:3
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作者 曾晓希 柴立元 +2 位作者 汤建新 刘学端 杨志辉 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2013年第9期2759-2765,共7页
The taxonomy characteriazation and cadmium (Cd) biosorption of the high Cd-resistant fungus M1 were investigated. The internal transcribed spacers (ITS) region and β-tubulin genes of the strain were amplified, se... The taxonomy characteriazation and cadmium (Cd) biosorption of the high Cd-resistant fungus M1 were investigated. The internal transcribed spacers (ITS) region and β-tubulin genes of the strain were amplified, sequenced and analyzed by molecular biology technology. The Cd biosorption assay was performed by shaking flask. Fourier transform infrared spectroscopy was used to analyze the mycelium. The similarity of gene sequences and phylogenetic trees show the very close relation between the strain and Paecilomyces lilacinus, and the fungus M1 was identified as P. Lilacinus. The initial pH 6 and Cd concentration about 100 mg/L are optimum. Zn and Mn have a little effect on the Cd biosorption of the strain, while Cu and Pb present obvious effects. FTIR analysis shows that the fungus adsorbs Cd by esters, anhydride, and amide. With the preferable absorption capacity, fungus M1 is considered to have good prospects in bioremediation. 展开更多
关键词 taxonomy characterization cadmium biosorption Paecilomyces lilacinu Fourier transform infrared spectroscopy
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基于带语义差别的模糊Taxonomy的交易数据库关联规则聚类 被引量:2
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作者 沈斌 姚敏 刘艳彬 《情报学报》 CSSCI 北大核心 2010年第2期246-253,共8页
关联规则聚类是大量关联规则的一种有效组织方式,本文针对基于商品分类信息的规则聚类方法存在的不足进行了改进,同时考虑了不同层次间的项目语义差别,以及具有不同隶属度的项目细致语义差别,将商品分类树改进为模糊Taxonomy的有向... 关联规则聚类是大量关联规则的一种有效组织方式,本文针对基于商品分类信息的规则聚类方法存在的不足进行了改进,同时考虑了不同层次间的项目语义差别,以及具有不同隶属度的项目细致语义差别,将商品分类树改进为模糊Taxonomy的有向无环图结构,该结构可以处理一个项目同时属于多个父结点的情况。我们充分考虑了有向无环图的性质,提出了带细致语义差别的模糊Taxonomy结构构建方法和相应的规则距离计算方法,其中,规则距离计算过程中的项集距离计算方法无需计算最佳匹配,因此,具有较小的时间开销。规则距离计算和聚类可视化试验结果表明了该方法的可扩展性和有效性,在规则的聚类计算上取得了较为满意的结果。 展开更多
关键词 关联规则 聚类 模糊taxonomy 语义信息
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The Systematic Taxonomy of Chinese Endemic Genera in Hynobiidae 被引量:2
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作者 熊建利 朱文文 孙平 《Agricultural Science & Technology》 CAS 2010年第1期55-58,共4页
Hynobiids are exclusively in Asia. China is the main distribution of hynobiids,and has many rich species because of the diversity of habitat. In present paper,the introduction on the systematic taxonomy of Chinese end... Hynobiids are exclusively in Asia. China is the main distribution of hynobiids,and has many rich species because of the diversity of habitat. In present paper,the introduction on the systematic taxonomy of Chinese endemic genera (Protohynobius,Batrachuperus,Liua,Pachyhynobius and Pseudohynobius) in Hynobiidae will improve the understanding on these genera. 展开更多
关键词 HYNOBIIDAE Endemic genera URODELA taxonomy
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Discussions on taxonomy of genus Betula in northeast China 被引量:1
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作者 周蕴薇 聂绍荃 张玉红 《Journal of Forestry Research》 SCIE CAS CSCD 2002年第3期235-238,252,共4页
Many researches have been carried out on the taxonomy of Betula in northeast of China, but the classification of species and subdivision of species had some divergences at all times, which led to a disorder for develo... Many researches have been carried out on the taxonomy of Betula in northeast of China, but the classification of species and subdivision of species had some divergences at all times, which led to a disorder for developing and utilizing resources of Betula. In this paper, species and subdivision of Betula were classified not only according to the wax sample of Betula but also the comprehensive taxonomy of population characters, geographical distribution, and the habitat. Theconclusion supported the Fu Pei-yuns?(1995) viewpoint of the taxonomy of Betula in the northeast of China. But B. mandshurica (Regel) Nakai should be considered as one single species, the name of B. platyphyla Suk.var phellodendroidesTung should be the synonym of B. platyphyla var platyphyla, and B. ermanii Cham.var.yingkiliensis liou et Wang should be incorporated into B. ermanii Cham. B. ovalifolia Rupr should not be regarded as a variety of B. fruticosa Pall. but as one single species. 展开更多
关键词 taxonomy BETULA Northeast forest region
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Semantic overlay network for searching taxonomy-based data sources 被引量:1
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作者 乔百友 王国仁 谢可心 《Journal of Southeast University(English Edition)》 EI CAS 2007年第3期322-326,共5页
Distributed data sources which employ taxonomy hierarchy to describe the contents of their objects are considered, and a super-peer-based semantic overlay network (SSON) is proposed for sharing and searching their d... Distributed data sources which employ taxonomy hierarchy to describe the contents of their objects are considered, and a super-peer-based semantic overlay network (SSON) is proposed for sharing and searching their data objects. In SSON, peers are dynamically clustered into many semantic clusters based on the semantics of their data objects and organized in the semantic clusters into a semantic overlay network. Each semantic cluster consists of a super-peer and more peers, and is only responsible for answering queries in its semantic subspace. A query is first routed to the appropriate semantic clusters by an efficient searching algorithm, and then it is forwarded to the specific peers that hold the relevant data objects. Experimental results indicate that SSON has good scalability and achieves a competitive trade-off between search efficiency and costs. 展开更多
关键词 peer to peer (P2P) taxonomy hierarchy semantic searching
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用传统分类表与叙词表编制Taxonomy的理论可行性研究 被引量:5
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作者 王忠红 《大学图书馆学报》 CSSCI 北大核心 2007年第4期36-40,共5页
Taxonomy概念可以理解为一个用于支持浏览功能的、基于某一特定环境或领域的概念等级体系。它由等级结构和主题词两个基本元素组成,在形式上结合了分类法和叙词表的特点,为用传统分类法和叙词表编制Taxonomy提供了理论可能性。但由于分... Taxonomy概念可以理解为一个用于支持浏览功能的、基于某一特定环境或领域的概念等级体系。它由等级结构和主题词两个基本元素组成,在形式上结合了分类法和叙词表的特点,为用传统分类法和叙词表编制Taxonomy提供了理论可能性。但由于分类法、叙词表和Taxonomy在性质与功能上均有不同之处,在利用传统分类法和叙词表编制Taxonomy过程中会遇到一些问题,首先,分类法和叙词表在主题范覆盖范围方面可能满足不了Taxonomy的要求;其次,分类法和叙词表的两个基本元素,等级结构和主题词在多大程度上可被利用,有待进一步实证。另外,如何将环境因素结合到Taxonomy类表中,是个有待补充的问题。 展开更多
关键词 分类法 叙词表 taxonomy
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Taxonomy:定义、辨析和应用 被引量:4
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作者 王忠红 《图书馆杂志》 CSSCI 北大核心 2006年第2期6-9,共4页
文章旨阐释Taxonomy概念,包括三部分内容:Taxonomy概念的定义、Taxonomy与文献分类法、叙词表、本体和主题指南的区别与联系以及Taxonomy的具体应用。
关键词 taxonomy 概念 文献分类法 叙词表 本体
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Taxonomy of the genus Ainu Lewis,1894(Coleoptera:Tenebrionidae) from China,with description of a new species
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作者 任国栋 苑彩霞 《Entomotaxonomia》 CSCD 2015年第2期129-133,共5页
The taxonomy of Ainu Lewis, 1894 from China is discussed. The new species, Ainu sichuanus sp. nov., is described, including a key to the species of Ainu from China. A distribution map of Chinese species of Ainu is pro... The taxonomy of Ainu Lewis, 1894 from China is discussed. The new species, Ainu sichuanus sp. nov., is described, including a key to the species of Ainu from China. A distribution map of Chinese species of Ainu is provided. 展开更多
关键词 darkling beetles Ainu sichuanus taxonomy key
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Taxonomy of the genus Uloma Dejean(Coleoptera:Tenebrionidae:Tenebrioninae) from Thailand
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作者 刘杉杉 任国栋 《Entomotaxonomia》 CSCD 2016年第2期119-126,共8页
The paper deals with Thai species of the genus Uloma Dejean. Three newly recorded species, Uloma longolineata Liu Ren, 2007, Uloma zhengi Liu Ren, 2007 and Uloma javana Gebien, 1912, all from Thailand are recorded in ... The paper deals with Thai species of the genus Uloma Dejean. Three newly recorded species, Uloma longolineata Liu Ren, 2007, Uloma zhengi Liu Ren, 2007 and Uloma javana Gebien, 1912, all from Thailand are recorded in this paper. A key and photos of the known species of Uloma from Thailand are presented. A redescription of the male and the first description of the female of Uloma rufilabris Fairmaire, 1882 are also provided. 展开更多
关键词 Ulomini new record taxonomy KEY
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Taxonomy构建及应用的现状调查与分析 被引量:1
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作者 邓伊婷 《科技情报开发与经济》 2012年第8期78-80,共3页
为了全面了解Taxonomy的发展现状,从TaxonomyWarehouse中抽取了119个英文分类词表,从主题范围、编制语种、应用形式、应用范畴等方面分析了其构建现状及应用特点。
关键词 taxonomy 词表构建 应用特点
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平衡计分卡XBRL Taxonomy设计理论模型构建及评价 被引量:2
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作者 宁翠屏 乔利利 +1 位作者 刘群玲 宋振晖 《中国证券期货》 2012年第02X期74-76,共3页
在分析平衡计分卡目前存在的问题的基础上,提出了在平衡计分卡中引入XBRL技术的重大意义,探索创建平衡计分卡的XBRL Taxonomy,以达到消除度量变量的模糊性,并为之添加语义,使报告信息无障碍流通的目的。采用设计科学研究方法,研究分为... 在分析平衡计分卡目前存在的问题的基础上,提出了在平衡计分卡中引入XBRL技术的重大意义,探索创建平衡计分卡的XBRL Taxonomy,以达到消除度量变量的模糊性,并为之添加语义,使报告信息无障碍流通的目的。采用设计科学研究方法,研究分为设计和评价两个阶段。设计阶段构建了平衡计分卡的XBRL Taxonomy设计理论模型;评价阶段采用SEQUAL框架分别对设计产品及设计过程的理论进行评价。XBRL技术的引入很好地解决了平衡计分卡变量的模糊性和数据语义不明显的问题。 展开更多
关键词 平衡计分卡 XBRL taxonomy 设计理论 SEQUAL框架
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National Scale Analysis of Soil Organic Carbon Storage in China Based on Chinese Soil Taxonomy 被引量:34
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作者 YU Dong-Sheng SHI Xue-Zheng +3 位作者 WANG Hong-Jie SUN Wei-Xia E. D. WARNER LIU Qing-Hua 《Pedosphere》 SCIE CAS CSCD 2007年第1期11-18,共8页
Patterns of soil organic carbon (SOC) storage and density in various soil types or locations are the foundation for examining the role of soil in the global carbon cycle. An assessment of SOC storage and density patte... Patterns of soil organic carbon (SOC) storage and density in various soil types or locations are the foundation for examining the role of soil in the global carbon cycle. An assessment of SOC storage and density patterns in China based on soil types as defined by Chinese Soil Taxonomy (CST) and the recently compiled digital 1:1000000 Soil Database of China was conducted to generate a rigorous database for the future study of SOC storage. First, SOC densities of 7 292 soil profiles were calculated and linked by soil type to polygons of a digital soil map using geographic information system resulting in a 1:1 000 000 SOC density distribution map of China. Further results showed that soils in China covered 9 281×103 km2 with a total SOC storage of 89.14 Gt and a mean SOC density 96.0 t ha-1. Among the 14 CST orders, Cambosols and Argosols constituted high percentage of China's total SOC storage, while Andosols, Vertosols, and Spodsols had a low percentage. As for SOC density, Histosols were the highest, while Primosols were the lowest. Specific patterns of SOC storage of various soil types at the CST suborder, group, and subgroup levels were also described. Results obtained from the study of SOC storage and density of all CST soil types would be not only useful for international comparative research, but also for more accurately estimating and monitoring of changes of SOC storage in China. 展开更多
关键词 Chinese soil taxonomy soil database soil organic carbon soil type STORAGE
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Significance of the leaf epidermis fingerprint for taxonomy of Genus Rhododendron 被引量:11
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作者 WANG Xiu-wei MAO Zi-jun +1 位作者 CHOI Kyung PARK Kwang-woo 《Journal of Forestry Research》 SCIE CAS CSCD 2006年第3期171-176,共6页
Leaf epidermal fingerprints of six species of Rhododendron ( Rh. Aureaum, Rh. dauricum, Rh. micranthum, Rh. Mucronulatum, Rh. Redowskianum, Rh. schlippenbachii) were observed by optical microscope with nail polish e... Leaf epidermal fingerprints of six species of Rhododendron ( Rh. Aureaum, Rh. dauricum, Rh. micranthum, Rh. Mucronulatum, Rh. Redowskianum, Rh. schlippenbachii) were observed by optical microscope with nail polish expression method in Key Laboratory of Forest Plant Ecology of Ministry Education China in Northeast Forestry University in 2004. The leaf morphological features including of stomata types, characters of guard cells, subsidiary cells in lower epidermis were observed. And ordinary cells (in shape and anticlinal walls feature) as well as the trichomes in both sides of the leaves are described in detail. The results showed that there were three types of stoma in six investigated Rhododendron species, from which Pericytic stomata type exists in three species (Rh. dauricum, Rh. micranthum, and Rh. mucronulatum), Anomocytic stomatal type in Rh. Redowskianum, Diacytic stomata type in Rh. aureaum and Rh. schlippenbachii. The subsidiary cells of the Pericytic and Diacytic stomata type are different in shape and surface feature between the species, respectively. The ordinary epidermal cells show a variety from quadrangular to hexagonal, polygonal or irregular in surface view, the anticlinal walls are straight or sinuose. Trichomes (gland scales) are present in the both of the leaf sides in three species (Rh. dauricum, Rh. micranthum, and Rh. mucronulatum). All of these detail leaf features show specific specificity of leave finger print for 6 rhododendrons. 展开更多
关键词 taxonomy Significance Epidermal Fingerprint STOMATA TRICHOME Rhododendron.
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Taxonomy and Stratigraphy of Late Mesozoic Anurans and Urodeles from China 被引量:4
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作者 WANGYuan 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2004年第6期1169-1178,共10页
Three anurans (Callobatrachus sanyanensis, Liaobatrachus grabaui, Mesophryne beipiaoensis) and six urodeles (Laccotriton subsolanus, Liaoxitriton zhongjiani, Jeholotriton paradoxus, Sinerpeton fengshanensis, Chunerpet... Three anurans (Callobatrachus sanyanensis, Liaobatrachus grabaui, Mesophryne beipiaoensis) and six urodeles (Laccotriton subsolanus, Liaoxitriton zhongjiani, Jeholotriton paradoxus, Sinerpeton fengshanensis, Chunerpeton tianyiensis, Liaoxitriton daohugouensis) are reported from the late Mesozoic tuff-interbedded lacustrine deposits (mostly of the Jehol Group) in northeastern China. They document the first discovery of Chinese Mesozoic lissamphibians, and their old geological age, superb preservation condition, and large taxoncmic diversity are unique compared with other findings worldwide. The anurans occupy a higher evolutionary position than typical Jurassic taxa, supporting a post-Late Jurassic age of the fossil horizons. The urodeles all have unicapitate ribs, suggesting an evolutionary grade at the cryptobranchoid level, and are advanced in osteological features over non-urodeles from the Middle and Upper Jurassic in England and Central Asia. Some urodeles (Jeholotriton and Chunerpeton) exhibit neotenic features, representing the earliest occurrence among such findings. Six fossil horizons are rscognized for the known Chinese Mesozoic anurans and urodeles: the Daohugou fossil bed, the Dabeigou Formation, the Lujiatun Bed, Jianshangou Bed and Dawangzhangzi Bed of the Yixian Formation, and the Jiufotang Formation. As implied from the osteological and phylogenetical studies, the geological age of these anurans and urodeles is the Early Cretaceous. 展开更多
关键词 ANURANS URODELES taxonomy STRATIGRAPHY Late Mesozoic China
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Classification of Ferrallitic Soils in Chinese Soil Taxonomy 被引量:6
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作者 GONG ZITONG CHEN ZHICHENG ZHAO WENJUN and SHI HUA(Institute of Soil Science, the Chinese Academy of Sciences, P.O. Box 821, Naroing 210008 China) 《Pedosphere》 SCIE CAS CSCD 2000年第2期125-133,共9页
The development of the classification of ferrallitic soils in China is reviewed and the classification ofFerralisols and Ferrisols in Chinese Soil Taxonomy is introduced in order to discuss the correlation betweenthe ... The development of the classification of ferrallitic soils in China is reviewed and the classification ofFerralisols and Ferrisols in Chinese Soil Taxonomy is introduced in order to discuss the correlation betweenthe ferrallitic soil classification in the Chinese Soil Taxonomy and those of the other soil classification systems.In the former soil classification systems of China, the ferrallitic soils were classified into the soil groups ofLatosols, Latosolic red soils, Red soils, Yellow soils and Dry red soils, according to the combination of soilforming conditions, soil-forming processes, soil features and soil properties. In the Chinese Soil Taxonomy,most of ferrallitic soils are classified into the soil orders of Ferralisols and Ferrisols based on the diagnostichorizons and/or diagnostic characteristics with quantitatively defined properties. Ferralisols are the soilsthat have ferralic horizon, and they are merely subdivided into one suborder and two soil groups. Ferrisolsare the soils that have LAC-ferric horizon but do not have ferralic horizon, and they are subdivided intothree suborders and eleven soil groups. Ferralisols may correspond to part of Latosols and Latosolic red soils.Ferrisols may either correspond to part of Red soils, Yellow soils and Dry red soils, or correspond to part ofLatosols and Latosolic red soils. 展开更多
关键词 Ferralisols FERRISOLS Chinese Soil taxonomy
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