贵州省关岭县叶蝉科昆虫区系分析

通过对贵州省关岭县66种叶蝉进行区系分析,结果表明:66种关岭叶蝉在世界动物地理区划中有10个区系型,其中以东洋界区系型为主体,种数为31种,所占比例46.97%;其次为东洋界—古北界区系型,种数为23种,占34.85%;按含特定地理区的跨区区系型复计种数和复计比例来看,纯东洋界区系型所占比例最大,其次为含古北界的跨区区系型.66种关岭叶蝉科昆虫在我国动物地理区划中的归属共计20种类型,其中以华中区特有种所占比例最高,计13种,占19.70%;其次为华中区—西南区—华南区种类,计9种,占13.64%.分析结果表明66种关岭叶蝉昆虫在世界动物地理区划中以东洋界为主,在中国动物地理区划中以华中区所占比例最大.     

广西蝗虫研究Ⅱ:蝗虫的地理区划

根据广西蝗虫种类,数量及分布特点,结合自然地理条件,探讨广西蝗虫地理区划,拟将广西蝗虫地理区划为３个蝗区６个蝗亚区：１．桂北区：桂东北南岭山地亚区和桂西北岩溶山原盆坝亚区;Ⅱ．桂中区：桂西岩溶山原谷地亚区和桂中,桂东低丘台山地谷地区;Ⅲ．桂南区：桂南沿海台地平原亚区和桂西南岩溶低山丘陵亚区。     

山西天蛾昆虫及区系分析

文章纪录了山西省天蛾科昆虫共５４种和亚种，分隶于２６个属，其中有省内新纪录３种。区系分析表明，山西省天蛾科昆虫在世界动物地理区系中可分为９个分布类型，其中以古北、东洋两界共有种类居多，占到４０．３８％，其次是古北界种类，占３６．５４％；在中国动物地理区系中可分为２０个类型，并集中分布于东北、华北、蒙新复合区内，计９种，占１７．３１％。文末对山西省境内的天蛾科昆虫的区划进行了详细的讨论     

重庆昆虫种类调查及区系分析(动物科学)

种类调查和区系分析是生物多样性保护及利用的前提，但重庆昆虫过去只有零星的记载和分析。近年来，在重庆典型的生态区开展了系统的昆虫采集、野外拍照和分类鉴定，同时，以1864年—2009年的《动物学记录》为主，结合相关文献资料，系统地整理和分析了分布于重庆的昆虫种类情况及区系分布。调查结果显示，该地区已记述昆虫26目（23亚目）319科2 566属4 715种。通过系统的区系分析，重庆市已知昆虫种类在世界动物地理区系中属于东洋区，其中与古北区共同分布种占63.49%，与其他区系共同分布种相对较少，1.59%的种为世界性分布；在我国动物区系中，重庆市昆虫种类属于西南区，其中与华中区的共同分布种最多、占77.49%，其次是与华南区共同分布种占59.21%，与青藏区的共同分布种最少，占16.31%,重庆特有分布种有234种。
     

重庆市城口县蝴蝶种类调查及区系分析

【目的】调查重庆市城口县的蝴蝶种类并进行区系分布研究。【方法】对重庆师范大学昆虫与分子生物学研究所馆藏的城口县蝴蝶针插标本进行鉴定整理;并于2016—2018年对城口县蝴蝶进行了较为全面的调查和采集,然后对采集到的蝴蝶成虫标本进行分类鉴定。根据已有相关文献资料和调查中采集到的蝴蝶种类分布情况,对城口县蝴蝶进行了系统的区系分析。【结果】共鉴定蝴蝶成虫标本1 466头,分属于5科112属224种,其中发现重庆市新纪录种34种。区系分析结果显示:在世界动物地理区系层面上,城口县蝴蝶有57.59%的种类归属东洋区,35.27%的种类为广布种,7.14%的种类归属古北区;在中国动物地理区系层面上,城口县蝴蝶共有31种分布型。【结论】城口县蝴蝶种类资源丰富,达重庆市已有蝴蝶纪录种数的57.93%,其中蛱蝶科(Nymphalidae)的种数最多。城口县蝴蝶种类在世界动物地理区系中的归属以东洋区为主,在中国动物地理区系上以西南、华中、华北三区交叉分布表现尤为明显。     

广西亚热带地区的鼠类及其对农业经济发展的影响

广西亚热带地区农田生态环境中栖息的鼠类有３１种（松鼠科除外），其中桂东北１５种，桂西北１４种，桂西南２３种，桂南１７种。鼠类组成以鼠科物种占绝对优势，种类多属于东洋界华中区（Ⅵ）种华南区（Ⅶ）的成分，除竹鼠、帚尾豪猪和青毛鼠外，广西境内的种类大多数为滇南山地亚区（ⅦＢ）的种类。鼠类的群落结构分为桂东北中山－黄胸鼠（Ｒａｔｔｕｓｆｌａｖｉｐｅｃｔｕｓ）、黑线姬鼠（Ａｐｏｄｅｍｕｓａｇｒａｒｉｕｓ）和黄毛鼠（Ｒ．ｌｏｓｅａ）群落，桂中丘陵孤峰平原－黄毛鼠、黄胸鼠和褐家鼠（Ｒ．ｎｏｒｖｅｇｉｃｕｓ）群落、桂南中山低山丘陵－黄毛鼠、黄胸鼠和板齿鼠（Ｂａｎｄｉｃｏｔａｉｎｄｉｃａ）群落、桂西南低山丘陵－黄毛鼠、板齿鼠和黄胸鼠群落，桂西北中山丘陵－黄毛鼠、小家鼠（Ｍｕｓｍｕｓｃｕｌｕｓ）和黄胸鼠群落．广西全区鼠密度平均１１．５１％，７７．２７％的县鼠密度＞１１％；９２．０５％的县鼠密度＞７％，鼠类生物量；桂东北３３．０只／ｈｍ２，桂西北３７．５只／ｈｍ２．桂中４２．０只／ｈｍ２，桂西南４９．５只／ｈｍ２；广西全区平均４２．０只／ｈｍ２。对鼠类对广西区域性农业生产的危害进行了分析，提出了控制鼠害的建议。     

广西等翅目昆虫区系及地理分布

结合广西综合自然地理特点，从区系和区域二方面探讨了广西等翅目昆虫的分布，并与邻省白蚁区系进行了比较。表明：区系组成以东洋区的中缅亚区种为主；中缅亚区中亚热带分布种略占优势，热带分布种也占有相当比重。区域成分华南区较华中区丰富．反映出热带地区白蚁组成的多样性特点。广西区域成分与广东省最相似，而种类组成则与湖南关系密切。分布在广西南部的土垅大白蚁（Ｍａｃｒｏｔｅｒｍｅｓａｎｎａｎｄａｌｅｉ）是热带景观的标志。依种类分布现状，将广西拟为国内白蚁亚热带种类的主要分布中心，以及印一马种向我国东南沿海地区扩散的中间地带之一。     

滇西北中甸地区的鱼类

滇西北中甸地区共有鱼类20种(亚种),分别隶属于2目4科15属;剔除3种引入种,原产土著种类仅有17种.区系成分以鲤科种数最多,共有8种.鱼类区系特点表现为:区系成分单一,地域划分显著,垂直分布明显和凶猛鱼类稀少.文中还对中甸鱼类的生物学特点,资源现状,资源的持续利用与保护等做了阐述和讨论.最后,就动物地理区划作了简要讨论,认为中甸地区是动物地理区划中的一个关键地区.     

广西猫儿山叶蜂昆虫区系及地理分布

对广西猫儿山进行叶蜂区系调查,鉴定整理出叶蜂昆虫134种,隶属3科63属.昆虫区系主要起源于东洋区,东洋种占总种数的65.67%.猫儿山叶蜂共计15种分布型,其中华中特有种所占比重最大,达58.96%.广西猫儿山与湖南有90个共有种,与四川有43种,与河南有39种;与云南(24种共有)的关系也比较密切,与西藏几乎没有什么联系.     

中国瓢蜡蝉科（半翅目：蜡蝉总科）昆虫的地理分布格局

我国瓢蜡蝉科昆虫物种多样性十分丰富,分布广泛,为进一步明确我国瓢蜡蝉地理分布区间相互关系及其分布格局,通过采用系统聚类法对瓢蜡蝉有分布记录的26个省级地理区进行聚类分析,结果显示:我国瓢蜡蝉科昆虫分布格局大致可以分为4个区域:华北区系(江苏+北京+河南+辽宁+山西+山东)、蒙新区系(内蒙+甘肃+宁夏+青海)、陕西区系(陕西)和南部区系(湖北+四川+广西+云南+海南+贵州+湖南+广东+福建+浙江+安徽+江西+香港+台湾);南部区系从西到东又可聚为3个亚区,即(湖北+四川+广西+云南+海南)亚区、(贵州+湖南+广东+福建+浙江+安徽+江西+香港)亚区、台湾亚区。在世界动物地理区划中,华北区系、蒙新区系和陕西区系均属古北界区系类型,南部区系基本属于东阳界区系类型。从聚类结果看,华北区系的瓢蜡蝉种类与南部区系联系较密切,显示两地间存在物种交流。各区系间气候、植被、地貌等异质性生态环境可能是我国瓢蜡蝉分布格局形成的主要原因。     

An Index mechanism for multi-scale view in spatial databases

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.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

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.     

A computer generator for randomly layered structures

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

Perspherical Approaches for Electrons in Atoms and Charged Excitons in Quantum Wells

Instead of following Fock’s expansion,we solve the Schrodinger equation for some quantum mechanical manybody systems such as electrons in atoms and charged excitons in quantum wells in a similar way in hyperspherical coordinates by expanding the wave functions into orthonormal complete basis sets of the hyperspherical hannonics(HHs)of hyperangles and generalized Laguerre polynomials(GLPs)of the hyperradius.This leads the equation to     

Advances in broadband wireless communications under high-mobility scenarios

Future mobile communication systems aim at providing very high data transmission rates, even in high-mobility scenarios such as high-speed wheel-track trains, maglev trains, highway vehicles, airplanes, guided missiles or spacecraft. A particularly important commercial application is the strong and increasing worldwide demand for high- speed broadband wireless communications （up to 574.8 km/ h test speeds or 380 km/h commercial speeds） in railways, providing data, voice and video services for applications such as onboard entertainment services to passengers, train control, train dispatch, train sensor status handling and sur- veillance. In such high-mobility scenarios, there are a number of communication challenges, including fast hand- over, location updating, high-speed channel modeling, estimation and equalization, anti-Doppler spreading tech- niques, fast power control, and dedicated network architec- ture. Because signal transmission in very high-speed scenarios will inevitably experience serious deterioration, it is imperative to develop key broadband mobile communi- cation techniques for such high-speed vehicles.     

Wuhan University Journal of Natural Sciences TOTAL CONTENTS

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海南岛地体及其毗邻陆缘晚中生代—新生代古地磁研究和构造演化

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。     

Scale-based spatial data model for GIS

Being the primary media of geographical information and the elementary objects manipulated, almost all of maps adopt the layer-based model to represent geographic information in the existent GIS. However, it is difficult to extend the map represented in layer-based model. Furthermore, in Web-Based GIS, It is slow to transmit the spatial data for map viewing. In this paper, for solving the questions above, we have proposed a new method for representing the spatial data. That is scale-based model. In this model we represent maps in three levels: scale-view, block, and spatial object, and organize the maps in a set of map layers, named Scale-View, which associates some given scales.Lastly, a prototype Web-Based GIS using the proposed spatial data representation is described briefly.     

Exciton Seebeck in Molecular Systems

Various applications relevant to the exciton dynamics,such as the organic solar cell,the large-area organic light-emitting diodes and the thermoelectricity,are operating under temperature gradient.The potential abnormal behavior of the exicton dynamics driven by the temperature difference may affect the efficiency and performance of the corresponding devices.In the above situations,the exciton dynamics under temperature difference is mixed with     

Achieving Unusual States of Matter Under High Pressure

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