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1.
物种编目及其科属系统排列是了解生物多样性的基础, 本文采用Flora of China使用的分类系统, 结合最新分子分类学研究成果以及近几年发表的新资料, 对中国石松类和蕨类植物多样性和地理分布数据进行了统计和分析。结果表明中国共有石松类和蕨类植物40科178属2,147种5个亚种118个变种, 其中特有种839个, 占总种数的39.08%。种数最多的5个科依次为鳞毛蕨科(505种, 含种下单位, 下同)、蹄盖蕨科(323种)、水龙骨科(280种)、凤尾蕨科(266种)和金星蕨科(209种); 种数最多的5个属依次为耳蕨属(Polystichum, 209种)、鳞毛蕨属(Dryopteris, 176种)、蹄盖蕨属(Athyrium, 137种)、双盖蕨属(Diplazium, 98种)和凤尾蕨属(Pteris, 97种)。在地理分布上, 种数排名前5的省份为云南(1,365种)、四川(875种)、贵州(838种)、广西(785种)和台湾(779种)。含中国特有石松类和蕨类植物的科属中, 排前3位的科分别为鳞毛蕨科(257种)、蹄盖蕨科(169种)和凤尾蕨科(113种); 排前3位的属为耳蕨属(140种)、蹄盖蕨属(82种)和鳞毛蕨属(61种)。  相似文献   

2.
生物多样性的编目和分类以及生物多样性监测是全球生物多样性研究的两个核心内容。物种编目是了解物种多样性的基础, 只有掌握物种分布格局及物种与环境的关系, 才能为物种监测和科学管理提供依据。作为浙江种子植物研究的“家底”, 本文在《浙江植物志(新编)》编研的基础上, 系统整理了浙江种子植物的物种名录。结果显示, 浙江共有种子植物212科1,469属4,430种, 其中野生植物有190科1,085属3,347种。所含种数多于100种的科有禾本科(285种)、莎草科(216种)、菊科(186种)、蔷薇科(153种)、兰科(126种)、蝶形花科(109种)和唇形科(108种); 含20种以上的属有15属, 包括薹草属(Carex, 126种)、刚竹属(Phyllostachys, 44种)、悬钩子属(Rubus, 44种)、冬青属(Ilex, 35种)、蓼属(Polygonum, 34种)、珍珠菜属(Lysimachia, 32种)、铁线莲属(Clematis, 31种)、景天属(Sedum, 28种)、槭属(Acer, 26种)、荚蒾属(Viburnum, 26种)、飘拂草属(Fimbristylis, 26种)、蒿属(Artemisia, 25种)、堇菜属(Viola, 22种)、葡萄属(Vitis, 21种)和山矾属(Symplocos, 21种)。其区系特点主要反映在: 物种丰富, 其科属组成多样; 保存了较多古老孑遗植物; 地理成分多样, 联系广泛, 由热带向温带过渡; 中国特有科2科、中国特有属45属、浙江(准)特有种近500种(含亚种和变种), 珍稀濒危植物丰富, 96种为国家重点保护植物; 外来植物多, 入侵风险大, 有些种已形成明显的危害。  相似文献   

3.
This checklist comprises all species of Hydrophilidae (Coleoptera: Hydrophiloidea) quoted in the literature referring to Iran and confirmed by our study. In total, 104 species within 17 genera and five subfamilies, Hydrophilinae (eight genera, 63 species), Chaetarthriinae (three genera, five species), Enochrinae (single genus, 20 species), Acidocerinae (single genus, three species) and Sphaeridiinae (four genera, 13 species), are listed for the fauna of Iran. Three species are endemic; four species are recorded here for the first time from Iran, and nine species are excluded from Iranian fauna.  相似文献   

4.
We report 20 new species records for the Coleoptera fauna in New Brunswick, Canada, five of which are new records for the Maritime provinces, including one species that is new for Canada. One species of Kateretidae, Kateretes pusillus (Thunberg) is newly recorded for New Brunswick and the Maritime provinces. Stelidota octomaculata (Say), Phenolia grossa (Fabricius), andCryptarcha strigatula Parsons of the family Nitidulidae are added to the faunal list of New Brunswick; the latter species is new to the Maritime provinces. Two species of Cerylonidae, Philothermus glabriculus LeConte and Cerylon unicolor (Ziegler), are reported for the first time for New Brunswick. Philothermus glabriculus is new for the Maritime provinces. Two species of Endomychidae, Hadromychus chandleri Bousquet and Leschen and Danae testacea (Ziegler) are newly recorded for New Brunswick. Three species of Coccinelidae, Stethorus punctum punctum (LeConte), Naemia seriata seriata Melsheimer, and Macronaemia episcopalis (Kirby) are added to the provincial list. Macronaemia episcopalis (Kirby) is a species new to the Maritime provinces. Nine species of Latridiidae, Cartodere nodifer (Westwood), Dienerella ruficollis (Marsham), Enicmus aterrimus Motschulsky, Enicmus fictus Fall, Encimus histrio Jay and Tomlin, Lathridius minutus (Linnaeus), Stephostethus productus Rosenhauer, Corticaria elongata (Gyllenhal), and Corticarina longipennis (LeConte) are newly recorded for New Brunswick. Stephostehus productus is newly recorded from Canada. Collection and habitat data are presented for all these species.  相似文献   

5.
中国苦苣苔科植物的多样性与地理分布(附表)   总被引:2,自引:0,他引:2  
许为斌  郭婧  盘波  张强  刘演 《广西植物》2017,37(10):1226-1226
物种多样性编目是开展生物多样性保护的重要基础,该研究结合最新分子系统学研究成果以及近年来发表的新资料,对中国苦苣苔科植物多样性和地理分布数据进行了统计和分析.结果表明:中国苦苣苔科植物共有44属671种(含种下单位,下同),其中特有属11个;特有种573种,占总种数的85.39%.种数最多的10个属依次为广义报春苣苔属(180种)、广义马铃苣苔属(122种)、石蝴蝶属(39种)、半蒴苣苔属(39种)、芒毛苣苔属(38种)、长蒴苣苔属(35种)、石山苣苔属(31种)、吊石苣苔属(31种)、蛛毛苣苔属(28种)、汉克苣苔属(22种).在地理分布上,种数排名前10的省份(区)有广西(260种,33属)、云南(236种,30属)、贵州(96种,28属)、广东(93种,17属)、四川(85种,21属)、湖南(58种,13属)、西藏(39种,9属)、湖北(29种,15属)、福建(26种,13属)、江西(25种,9属).含中国特有苦苣苔科植物的属中排前10位的分别为广义报春苣苔属(178种)、广义马铃苣苔属(119种)、石蝴蝶属(37种)、半蒴苣苔属(35种)、石山苣苔属(30种)、长蒴苣苔属(29种)、吊石苣苔属(23种)、蛛毛苣苔属(19种)、芒毛苣苔属(19种)、汉克苣苔属(11种).这表明中国南部和西南部是苦苣苔科植物的一个分布中心,特别是石灰岩地区有着高度的物种多样性和特有性,广义报春苣苔属、广义马铃苣苔属、石蝴蝶属、半蒴苣苔属、石山苣苔属、吊石苣苔属等为我国典型的优势属.此外,根据目前的研究现状,还对我国苦苣苔科植物资源的调查、分类学和系统发育研究、保护和可持续利用等进行了讨论.  相似文献   

6.
Improvement of morphological and molecular identification methods allows the detection of new species of mosquitoes. The mosquito fauna of Croatia currently includes 52 species, belonging to eight genera, including Anopheles (12 species), Aedes (24 species), Coquillettidia (one species), Culex (seven species), Culiseta (six species), Orthopodomyia (one species), and Uranotaenia (one species). This is an updated checklist, which includes five new species found in Croatian mosquito fauna. Two of these are invasive mosquito species, Aedes albopictus (Skuse, 1895) and Aedes japonicus (Theobald 1901), which are spreading across Europe and Croatia. The other three species, Culex laticinctus (Edwards 1913), Culex torrentium (Martini 1925), and Anopheles daciae (Linton, Nicolescu & Harbach 2004) are autochthonous species which haven't been recorded so far. Since there are several more invasive species spreading across Europe, we assume that this is not the final list.  相似文献   

7.
中国鸟类红色名录评估   总被引:1,自引:0,他引:1  
中国有1,372种鸟类, 其中77种为中国特有。由于资源过度利用、栖息地丧失和片断化、环境污染等原因, 中国的鸟类多样性保护面临严峻的挑战。为了全面评估当前中国野生鸟类的濒危状况, 国家环境保护部支持启动了“中国脊椎动物红色名录”的编制工作。依照IUCN的标准, 对中国鸟类的受胁状况进行了一次全面评估。通过确定评估对象、数据收集、初评、初核、复审、定稿等步骤, 集国内27位鸟类学家的力量, 完成了本次评估。结果表明: 区域灭绝(RE)3种, 分别是白鹳(Ciconia ciconia)、镰翅鸡(Falcipennis falcipennis)和赤颈鹤(Grus antigone), 极危(CR)15种, 濒危(EN)51种, 易危(VU)80种, 近危(NT)190种; 无危(LC)876种, 数据缺乏(DD)157种。列为极危、濒危和易危等级的受胁鸟类合计146种, 占中国鸟类种数的10.6%。受威胁程度最高的科是鹈鹕科和犀鸟科, 这两个科100%的物种都属于受胁种。。77种特有鸟类中有29种(37.7%)属于受胁种。陆禽和猛禽是受胁最严重的生态类群, 分别有25.2%和23.2%的种类处于受胁状态。不同行政区域受胁鸟类差异较大。本工作对于我国鸟类保护和履行国际公约等工作均有重要意义。  相似文献   

8.
杜维波  卢元 《生物多样性》2019,27(11):1260-773
物种编目是了解生物多样性的基础。本文收集已出版的专著和文献, 查阅标本馆的馆藏标本信息, 在此基础上, 对黄土高原的石松类和蕨类植物的多样性和地理分布数据进行统计和分析。科属排列采用Flora of China的分类系统, 科属界定依据分子系统学的最新研究成果。结果表明, 黄土高原共有石松类和蕨类植物18科42属165种2亚种5变种, 其中中国特有种35种, 占总种数的20.35%。种类数量最多的5个科依次为凤尾蕨科(29种, 含种下单位, 下同)、鳞毛蕨科(28种)、水龙骨科(19种)、蹄盖蕨科(16种)和铁角蕨科(16种); 种类数量最多的6个属依次为铁角蕨属(Asplenium, 16种)、鳞毛蕨属(Dryopteris, 15种)、耳蕨属(Polystichum, 12种)、岩蕨属(Woodsia, 11种)、卷柏属(Selaginella, 10种)和瓦韦属(Lepisorus, 10种)。黄土高原的石松类和蕨类植物中, 无珍稀濒危保护植物, 无中国特有属。依据生态类型可划分为4类, 即土生植物(112种)、石生植物(75种)、附生植物(18种)、水生植物(3种), 该区域石松类和蕨类植物土生或石生的种类占总种数的89.53%。在地理分布上, 黄土高原石松类和蕨类处于我国现生类群分布的边缘区域, 这与我国的石松类和蕨类分布规律基本一致。  相似文献   

9.
To date (1 November 2023), the online database AlgaeBase has documented 50,589 species of living algae and 10,556 fossil species here referred to four kingdoms (Eubacteria, Chromista, Plantae, and Protozoa), 14 phyla, and 63 classes. The algae are the third most speciose grouping of plant-like organisms after the flowering plants (≈382,000 species) and fungi (≈170,000 species, including lichens) but are the least well defined of all the botanical groupings. Priority is given to phyla and class names that are familiar to phycologists and that are nomenclaturally valid. The most species-rich phylum is the Heterokontophyta to which 18 classes are referred with 21,052 living species and which is dominated by the diatoms in three classes with 18,673 species (16,427 living; 2239 fossil). The next most species-rich phyla are the red algae (7276 living), the green algae (6851 living), the blue-green algae (Cyanobacteria, 5723 living), the charophytes (4950 living, including the Charophyceae, 511 species living, and the Zygnematophyceae, 4335 living species), Dinoflagellata (2956 living, including the Dinophyceae, 2828 extant), and haptophytes (Haptophyta 1722 species, 517 living).  相似文献   

10.
Faunistic complexes of 155 species of the Cladocera found in Eastern Siberia and the Far East of Russian Federation are described. The eight complexes are specified: unrevised widely spread species (51), the widespread Eurasian faunistic complex (34 species), the circumpolar complex (4 species), the East Asian and American (Beringian) complex (8 species), the endemic East Asian complex (19 species), the southern thermophilic complex (12 species), the mountainous endemic complex (3 species), and the Baikal endemic complex (8 species). Directions for further studies are suggested. Faunistic investigations of the modern level in the East Palearctic represent an independent task, which should be accomplished by taxonomists in close cooperation with specialists on local faunas.  相似文献   

11.
王宁 《生态科学》2013,32(3):365-371
运用民族植物学研究方法,对贵州宗地乡苗族聚集地野生植物资源利用进行了分析。结果发现:当地常用野生植物有83 种, 隶属42 科,较多的为菊科12 种(14.46%)、百合科6 种(7.23%)、禾本科5 种(6.02%)、蔷薇科5 种(6.02%)。以根、茎、皮、叶、花、果实、芽、全株利用为主的植物,分别有7 种(8.43%)、33 种(39.76%)、3 种(3.61%)、26 种(31.33%)、2 种(2.41%)、19 种(22.89%)、5 种(6.02%)和16 种(19.28%)。食用植物有26 种(31.33%);药用植物有37 种(44.58%);建材植物有12 种(14.46%);饲料植物有9 种(10.84%);工艺植物有6 种(7.23%);纤维植物有5 种(6.02%);染料植物有3 种(3.61%);油料植物有2 种(2.41%);仪式用植物和娱乐植物各有1 种(1.20%)。具三种利用类型的植物有6 种(7.23%);具两种利用类型的植物有12 种(14.46%)。研究表明,宗地乡苗族野生植物利用跟这些植物的生物学特性、喀斯特生境和当地苗族文化密不可分,需要进一步加强整理与挖掘。  相似文献   

12.
细胞色素b基因序列与11种熊蜂的系统进化   总被引:6,自引:2,他引:4  
通过比较一段357b的细胞色素b的序列,分析了熊蜂属5亚属11种熊蜂系统发育关系。5亚属包括Bombus( 5种),Thoracobombus(3种),Mendacibombus(1种),Fervidobombus(1种)和Pyrobombus(1种),该序列有65个单变异态位点和71个简约信息多态位点,翻译成119个氨基酸序列后有45个氨基酸变异位点。根据P-距离构建的邻接树(NJ tree)和最大简约树(MP tree)都显示同样的结果:Mendacibombus (B.avinovielllus)分化最早;Fervidobombus(B.pensylvanicus)次之;Pyrobombus(B.impatiens)和Bombus形成姊妹群;Bombus亚属是单系群,其中B.ignitus在所研究的5个种中分化最早。  相似文献   

13.
本是作1981-1993年对山东省蚜虫的调查结果,共记述12科,80属,184种和亚种及其寄主与分布,其中6种是中国新记录,97种是山东省新记录(右上角标记*)。  相似文献   

14.
《农业工程》2020,40(3):221-236
The floristic study carried out during 2015–2018 revealed that the flora of Koh-e-Safaid Range comprised of 654 species, 401 genera from 116 families. Leading families were Poaceae 72 species (11.07%), Asteraceae 56 species (8.61%), Rosaceae 43 species (6.61%), Lamiaceae 41 species (6.25%), Papilionaceae 38 species (5.84%), Brassicaceae 32 species (4.92%), Ranunculaceae 17 species (2.61%), Apiaceae and Polygonaceae each with 16 species (2.41%). The largest genera were: Prunus (9 species), Potentilla and Astragalus (8 species each), Artemisia, Allium (7 species) Euphorbia and Amaranthus (6 species each), Lepidium, Nepeta and Cotoneaster (5 species each). Therophytes with 257 species (39.23%) were the dominant life form, followed by nanophanerophytes 104 species (15.92%), geophytes 100 species (15.31%), hemicryptophytes 98 species (15.00%). Cuscuta reflexa, Viscum album and Viscum articulatum were three of the shoot parasites. The leaf spectrum was dominated by nanophylls 246 species (37.67%) followed by microphylls 140 species (21.43%) and mesophylls 128 species (19.54%). Eleven species (1.68%) were aphyllous. Majority of the species (459 species, 70.29%) had simple lamina while seven species (1.07%) had spiny leaves. Present report also listed the some of the endemic species while Cleome amblycarpa and Salvia reflexa are reported as a new addition to the list of Flora of Pakistan.  相似文献   

15.
生物多样性编目与监测是我国各级自然保护区的基础工作。本研究收集整理了四川王朗国家级自然保护区2004-2019年基于实地调查与观测的鸟类记录,数据来源包括公众科学活动、红外相机调查和自动录音记录。共记录鸟类16目55科271种,其中,东洋界物种147种(54.24%),古北界物种94种(34.69%),广布种30种(11.07%);留鸟165种(60.89%),冬候鸟14种(5.17%),夏候鸟67种(24.72%),旅鸟22种(8.12%),迷鸟3种(1.11%);国家Ⅰ级重点保护野生动物5种:鸡形目Galliformes雉科Phasianidae斑尾榛鸡Tetrastes sewerzowi、红喉雉鹑Tetraophasis obscurus、绿尾虹雉Lophophorus lhuysii和鹰形目Accipitriformes鹰科Accipitridae胡兀鹫Gypaetus barbatus、金雕Aquila chrysaetos;国家Ⅱ级重点保护野生动物23种;列入世界自然保护联盟红色名录的10种,列入中国脊椎动物红色名录的34种。结果表明,保护区鸟类区系组成总体上具有南北混杂的过渡特征,兼具东洋界与古北界成分,物种多样性丰富,记录鸟种数占四川省有记录鸟种总数(708种)的38.28%,在鸟类多样性保护中有重要价值。本研究为保护区管理以及未来的鸟类监测和研究提供了基础资料。  相似文献   

16.
Abstract

Stomatal features and ontogeny of stomata of 11 ornamental taxa of monocotyledonous families with Agavaceae (1 species), Amaryllidaceae (1 species), Araceae (3 species), Cannaceae (1 species), Commelinaceae (3 species), Liliaceae (1 species), and Musaceae (1 species) have been studied. Features like stomatal area, leaf area occupied by stomata and per cent leaf area occupied by stomata are reported for these taxa for the first time.  相似文献   

17.
为便于了解青藏高原植被特殊物种组成、群落特征及分布格局, 该文利用2018-2021年在青藏高原不同区域内调查的338个样地、共758个样方的数据, 分析了高原植物群落的物种组成、区系特征和植被分类, 整合形成青藏高原植物群落样方数据集。结果表明: 青藏高原高寒和温性植物群落758个样方中, 共有植物65科279属837种; 其中, 物种数最多的5个科依次是菊科(134种)、禾本科(88种)、豆科(75种)、蔷薇科(43种)和莎草科(40种), 物种数最多的5个属依次是蒿属(Artemisia, 29种)、马先蒿属(Pedicularis, 27种)、风毛菊属(Saussurea, 25种)、黄耆属(Astragalus, 23种)和早熟禾属(Poa, 23种)。植物区系主要由温带(145属)和世界广布(36属)的成分所组成。物种的生长型以草本(83.51%)和灌木(10.87%)为主, 草本和木本的生活型分别以多年生草本(88.23%)和落叶灌木(83.67%)为主。338个样地可以划分为4个植被型组, 10个植被型, 20个植被亚型, 78个群系组和117个群系, 其中草原群系34个, 草甸群系33个, 荒漠群系33个, 灌丛群系14个和针叶林群系3个。该数据集覆盖青藏高原绝大部分高寒灌丛、高寒草原、高寒草甸、高寒荒漠、温性草原和温性荒漠植被区域, 可为研究高原植被特征和地带性分异规律, 气候变化和人类活动对高原植被的影响及其生态恢复提供坚实的数据基础, 同时为下一代中国植被图的更新提供参考。  相似文献   

18.
One species of Silvanidae, Silvanus muticus Sharp, is newly recorded from New Brunswick, Canada and the Maritime provinces; Ahasverus longulus (Blatchley) is re-instated to the faunal list of the province, and we report the first recent provincial records of Dendrophagus cygnaei Mannerheim. Five species of Laemophloeidae (Charaphloeus convexulus (LeConte), Charaphloeus undescribed species (near adustus), Leptophloeus angustulus (LeConte), Placonotus zimmermanni (LeConte), and an undescribed Leptophloeus species) are added to the faunal list of New Brunswick. Collection data, bionomic data, and distribution maps are presented for all these species.  相似文献   

19.
庐山蕨类植物区系研究   总被引:2,自引:1,他引:1  
庐山共有蕨类植物39科87属247种(含变种、变型),其区系带有热带和温带双重性。其中鳞毛蕨科、水龙骨科、蹄盖蕨科、金星蕨科和铁角蕨科属种优势明显,共有38属160种,分别占总属数的43.7%和种数的64.8%,代表了该地区蕨类植物区系的一个重要特征。该区区系地理成分复杂,相互交错,其中热带性属占总属数的64.2%,温带性属占总属数的35.8%。东亚成分在该区系占有绝对优势,共有14属,占总属数的20.9%,中国特有属缺乏,特有种丰富,表明成分具有多样性并具有热带亲缘性,是亚热带向北温带的过渡地区。该区与井冈山、武夷山关系密切,与鼎湖山、秦岭和横断山关系疏远。  相似文献   

20.
贡嘎山是横断山脉海拔最高的一座大山,是研究山地植物多样性和海拔分布的理想地区。为了探讨贡嘎山地区石松类和蕨类植物多样性组成及海拔分布特点,该研究基于野外考察、标本采集鉴定及文献考证,对贡嘎山地区石松类和蕨类植物进行统计和分析。结果表明:(1)贡嘎山地区有石松类植物3科4属25种,蕨类植物有23科56属291种。(2)主要的珍稀濒危植物有6种,分别是高寒水韭(Iso tes hypsophila)、松叶蕨(Psilotum nudum)、桫椤(Alsophila spinulosa)、小叶中国蕨(Aleuritopteris albofusca)、玉龙蕨(Polystichum glaciale)和扇蕨(Lepisorus palmatopedatus)。(3)优势科为鳞毛蕨科(Dryopteridaceae)75种、水龙骨科(Polypodiaceae)56种、凤尾蕨科(Pteridaceae)54种和蹄盖蕨科(Athyriaceae)37种;优势属为耳蕨属(Polystichum)45种、鳞毛蕨属(Dryopteris)24种、蹄盖蕨属(Athyrium)24种和瓦韦属(Lepisorus)19种。(4)区系以温带成分为主,有286种(93.77%)。随着海拔的上升,石松类和蕨类的物种多样性逐渐增加,2000~3000 m海拔段的物种多样性最高,为20科46属192种,3000 m以上物种多样性逐渐下降,4500 m以上仅分布有4种蕨类植物。此外,该研究还发现,随着海拔的升高,中国-喜马拉雅成分逐渐增加。  相似文献   

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