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1.
中国婀灰蝶属Albulina─新亚种记述(鳞翅目:灰蝶科)王治国(河南省科学院,郑州450003)关键词灰蝶科,分类,婀灰蝶属,新亚种,中国本文记述河南省婀灰蝶属Albulina1新亚种,模式标本保存在河南省科学院。婀灰蝶秦岭亚种Albulinaor...  相似文献   

2.
徐文芬  王朝红  何顺志 《贵州科学》2005,23(4):43-47,67
通过野外调查、标本采集、分类学研究及资料考证相结合,基本搞清了贵州马鞭草科、玄参科及爵床科药用植物资源的种类与地理分布。结果发现贵州现有马鞭草科药用植物9属53种(含变种和变型)、玄参科28属75种(含变种)、爵床科23属38种,其中1种为贵州地理分布新记录种,48种(含变种)为贵州药用新资源。《贵州中药资源》中记载的13种为误载,6种为拉丁异名。  相似文献   

3.
中国金藻类新记录   总被引:1,自引:1,他引:0  
1991~1992年,作者在湖北、安徽、江苏、浙江等省进行金藻类植物的研究,发现一些在我国尚未报道的种类,其中隶属于单鞭金藻属(Chromulina)的有1种,棕鞭藻属(Ochromonas)的有2种,金杯藻属(Keqhyrion)的有6种,金瓶藻属(Lagynion)的有1种,锥囊藻属(Dinobryon)的有1变种。这些种类中的有些种类在形态特征上与原种的描述和图示有些不同,但这些差异尚不足建立一个新种类。本文对我国的这些新记录的形态特征及其生长的生态环境进行报道。  相似文献   

4.
广东鼎湖山自然保护区大型真菌区系初析   总被引:12,自引:2,他引:10  
宋斌  邓旺秋 《贵州科学》2001,19(3):43-49
本文对广东鼎湖区自然保护区内的大型真菌区系进行了分析。结果:种类最多的科是口蘑科共有90种(占总数的15%),第二为多孔菌科共有70种(占总数的11.6%),第三为红菇科共60种(占总数的10.0%),含10种或以上的科依次还有牛肝菌科(45种)、丝膜菌科(35种)、粉褶蕈科(26种)、鹅膏科(24种)、伞菌科(24种)、鬼伞科(23 )、刺革菌科(22种)、珊瑚菌科(21种)、炭角菌科(18种)、麦角菌科(12种)、球盖菇科(12种)、松塔牛肝菌科(11种)、猴头菌科(10种);种数(包括种下单位)10种以上的属有13属(占总属数的8.1%)共有种类248种(占全部种数的41.2%),它们依次是红菇属(48种)、粉褶蕈属(26种)、小皮伞属(22种)、鹅膏属(22种)、小小脆柄菇属(19种)、牛肝菌属(18种)、丝盖伞属917种)、小菇属(16种)、炭角菌属(12种)、微皮伞属(12种)、虫草属(12种)、乳菇属(12种)、栓菌属(11种);从属瓣区系地理成分上可分为:(1)广布成分(61.9%)、(2)泛热带成分(15.6%)、(3)旧世界热带成分(0.6%)、(4)热带亚洲-热带美洲分布(1.2%)、(5)热带亚洲-热带非洲成分(0.6%)、(6)北温带布成分(19.5%)、(7)地中海区-西亚至中亚成分(0.6%)、(8)东亚-北美洲成分(0.6%)。结果表明了鼎湖山大型真菌的属以广布成分为主,其次为比例相按近的热带成分与北温带成分。  相似文献   

5.
增补报道了《河南植物志》中未记录的河南产茜草科植物1属、5种、5变种,其中1属(新耳草属Neanotis Lewis)2种(薄叶新耳草Neoatis hirsuta和水团花Adina pilulifera)为河南分布新记录,订正了6个分类群的学名。  相似文献   

6.
贵州虎耳草科、蔷薇科药用植物资源的调查   总被引:1,自引:0,他引:1  
通过野外调查、资料收集与标本鉴定相结合,基本摸清了贵州虎耳草科和蔷薇科药用植物的种类与地理分布。结果发现贵州现有虎耳草科16属48种(含变种)、蔷薇科28属170种(含变种和变型),其中1种贵州地理分布新记录种,33种(含变种和变型)为贵州药用新资源。《贵州中药资源》中记载的14种为误载,14种为拉丁异名。  相似文献   

7.
报道了近来发现的10个温州植物区系新资料,包括2个温州分布新记录属:芹菊属(ErechtitesRafin)和金刚大属(CroomiaTorr.exTort.etA.Gray);8个温州分布新记录种:壳斗科的刺叶栎(Quercusspinosa),千屈菜科的耳基水苋(Ammanniaauriculata)、多花水苋(Ammanniamultiflora),玄参科的江西马先蒿(Pediculariskiangsiensis),菊科的梁子菜(Erechtiteshieraciifolius)、费城飞蓬(Erigeronphiladelphicus)和花叶滇苦菜(Sonchusasper),百部科的金刚大(Croomiajaponica).  相似文献   

8.
陕西省蟋蟀总科的初步报道   总被引:3,自引:0,他引:3  
蟋蟀总科(Gryloidea)是普遍的农林害虫,也是中医药重要成份和娱乐昆虫。本文记载陕西省蟋蟀总科4科16属37种,其中有1新属,3新种,27陕西新纪录种  相似文献   

9.
杨定  杨集昆 《广西科学》1994,1(3):32-34
记述采自广西猫儿山鹬虻属(Rhagio)2新种,即无痣鹬虻(R.astictaYangetYang)和拟无痣鹬虻(R.pseudastictaYangetYang),并综述属的特征。模式标本存北京农业大学昆虫标本室。  相似文献   

10.
安徽大别山的野生果树种质资源   总被引:1,自引:0,他引:1  
本文报道大别山野生果树种质资源共计25科44属149种,并逐科简介这些种类及其利用方式。为当地群众发掘和开发利用野生果树种质资源提供依据,现报道如下:1野生果树的科、属、种根据初步调查,大别山野生果树种质资源共计149种,隶属于25科、44属,其中含野生果树较多的科有蔷薇科(45种)、桑种(10种)、葡萄科(10种)、胡颓子科(9种)、猕猴桃科(7种)、壳斗科(6种)、四照花科(5种)、五味子科(5种)、柿树科(5种)、杜鹃花科(5种);在44个属中,较大的属有悬钩子属(Rubus)(17)种、梅属(Prunus)(16种)、葡萄属(Vit…  相似文献   

11.
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.  相似文献   

12.
The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3~4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰~ -7.8‰, PDB) and matrix dolomites (-6.6‰~ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084~0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078~0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.  相似文献   

13.
何延凌 《科技信息》2008,(4):258-258
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.  相似文献   

14.
AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…  相似文献   

15.
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。  相似文献   

16.
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.  相似文献   

17.
本文叙述了对海南岛及其毗邻大陆边缘白垩纪到第四纪地层岩石进行古地磁研究的全部工作过程。通过分析岩石中剩余磁矢量的磁偏角及磁倾角的变化,提出海南岛白垩纪以来经历的构造演化模式如下:早期伴随顺时针旋转而向南迁移,后期伴随逆时针转动并向北运移。联系该地区及邻区的地质、地球物理资料,对海南岛上述的构造地体运动提出以下认识:北部湾内早期有一拉张作用,主要是该作用使湾内地壳显著伸长减薄,形成北部湾盆地。从而导致了海南岛的早期构造运动,而海南岛后期的构造运动则主要是受南海海底扩张的影响。海南地体运动规律的阐明对于了解北部湾油气盆地的形成演化有重要的理论和实际意义。  相似文献   

18.
There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.  相似文献   

19.
20.
The elongation method,originally proposed by Imamura was further developed for many years in our group.As a method towards O(N)with high efficiency and high accuracy for any dimensional systems.This treatment designed for one-dimensional(ID)polymers is now available for three-dimensional(3D)systems,but geometry optimization is now possible only for 1D-systems.As an approach toward post-Hartree-Fock,it was also extended to  相似文献   

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