铁岭凡河河口湿地生物多样性及保护策略

为保护铁岭凡河河口湿地生物多样性,在对辽河支流凡河河口湿地自然环境和生物多样性实地科学考察的基础上,根据凡河河口湿地的自然条件和野生动植物资源现状,从生物多样性保护意义、加快生态工程建设、加强生物多样性监测、适度开发利用景观资源等方面提出凡河河口湿地生物多样性保护策略.     

宝天公路建设对小陇山珍稀濒危物种的影响及其对策研究

宝天高速公路穿越甘肃保存最为完整的天然次生林——小陇山林区,其建设对带动沿线区域经济发展起着举足轻重的作用,但也不可避免地会对沿线生态系统（尤其是其中的生物多样性及其功能）产生诸多不利影响。重点论述了宝天高速公路在建设期和营运期对小陇山林区珍稀濒危动植物的影响,列举了该区域珍稀濒危动植物的种类：16种植物和9种动物,并从其濒危现状出发,探讨宝天高速公路的建设对其产生的影响。在探讨对濒危动物影响时,运用了确立“代理种”的思路,以期能更加明确地讨论公路建设带来的影响。同时,针对宝天高速公路对珍稀濒危动植物的影响,提出了一些有效的应对保护措施。     

四川凉山彝族传统宗教文化对生物多样性的影响

采用民族生物学的参与式农村评估法以及人类学的半结构式访谈法、关键人物访谈法对四川凉山瓦侯地区彝族传统宗教和生物多样性的状况进行了深入的调查,以彝族传统宗教毕摩、苏尼对动植物资源的使用情况以及彝族人的传统宗教文化对该地区生物多样性的保护为研究重点,阐明了彝族传统宗教与生物多样性之间的关系.结果表明:毕摩、苏尼在法器制作以及日常法事行为中对动植物资源的使用不会对该地区的生物多样性造成威胁,而彝族人传统的宗教文化对该地区的生物多样性起着重要的维系与保护作用.     

浅谈自然保护区在野生动植物保护中的作用

随着国家对生态环境的逐渐重视,我国建立的自然保护区内的生态系统和生物多样性逐渐完整,各种类型的自然保护区有效地对我国的生物多样性起到了充分的保护作用,人们的保护意识有了很大的提高,自然保护区成了野生动植物的天然乐园。随着各部门针对野生动植物保护的力度加大,森林和野生动物类型的自然保护区对生物多样性保护方面正发挥着主渠道作用。     

淮河下游地区植被资源多样性及其保护对策

淮河下游地区人类活动历史悠久,生物多样性受到严重威胁．本文论述了该地区常绿针叶林、落叶阔叶林、落叶常绿阔叶混交林、竹林、灌丛、灌草丛、草丛、沼泽植被、水生植被等植被资源类型的特征,分析了该地区自然保护区建设及植被资源经营管理中存在的问题,提出了应采取的植被资源多样性保护对策．     

安徽省自然保护区建设发展存在问题及对策建议

自然保护区是现有条件下人类保护自然资源和濒危野生动植物的最有效手段,已成为生物多样性保护和研究的重要基地.安徽省自然保护区建设已有三十年历史,建设了一批不同级别、不同类型的自然保护区,为区域生物多样性保护做出了重要贡献.文中在重点分析安徽省自然保护区建设发展现状和存在问题的基础上,提出加强自然保护区建设和管理的对策,为安徽省自然保护区的良性发展进行有益探索.     

“青海生物多样性保护研讨会”召开

中国环境与发展国际合作委员会生物多样性工作组 2001年年会暨青海省生物多样性保护研讨会,于 2001年6月24～30日在西宁召开。与会者有来自挪威、英国、美国、日本、世界自然保护联盟(IUCN)、国际野生动植物保护联盟(FFl)的工作组外方成员、部分中方成员以及青海省环保局等有关部门的专家、政府官员,共计70余人。生物多样性工作组主要负责评估中国生物多样性保护的关键性问题和现状,结合国家对生物多样性公约的履行,有选     

“生物多样性国际论坛”征文

由中国生态学学会、日本生态学会、韩国生态学会联合主办的“生物多样性国际论坛”将于2010年5月22—25日在丽江举行。 论坛议题为：国际生物多样性保护,亚洲共行动。会议议题：生态系统与珍稀濒危动植物的保护和合理利用、自然保护区建设与生物多样性保护、生态旅游的发展与生物多样性保护、中药资源的开发利用与生物多样性     

加快青海省林下产业发展的研究

目前,青海省林地面积为309.66万公顷,孕育了许多特有动物资源、林下以及林缘植物资源。但是通过开发形成养殖产业的品种几乎没有,仍然在原生地采挖,这不但使得野生资源枯竭,同时严重地破坏了高原脆弱的生态环境,结合林下资源的应用现状,提出了根据林下动植物资源的特点,分区域地发展青海地道药用动植物、食用经济动植物、菌类,进行合理种植、养殖,以构建稳定的生态系统,达到林地生物的多样性,同时促进青海地方经济发展的总体思路。     

甘肃省太子山国家级自然保护区生物多样性胁迫因素及保护对策

甘肃省太子山国家级自然保护区的建设与发展对黄河流域生态环境保护及西北地区生态安全屏障具有重要作用.然而,由于受各种因素的胁迫和干扰,保护区内的生物多样性丰富度降低,森林生态系统脆弱,野生动植物栖息地受到不同程度的影响.因此,文章根据保护区内生物多样性特点并通过调查分析,分别从冰暴雨雪、矿山开发、有害生物以及人为因素等方面系统阐述和分析了影响保护区内生物多样性的胁迫因素,并提出了相应的保护对策,以期为保护区内生物多样性的保护和研究提供依据和参考.     

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…     

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。     

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     

《Chinese Science Bulletin》SUBJECT INDEX TO VOLUME 59(2014)

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An on-line scaling method for improving scalability of a database cluster

The explosive growth of the Internet and database applications has driven database to be more scalable and available, and able to support on-line scaling without interrupting service. To support more client's queries without downtime and degrading the response time, more nodes have to be scaled up while the database is running. This paper presents the overview of scalable and available database that satisfies the above characteristics. And we propose a novel on-line scaling method. Our method improves the existing on-line scaling method for fast response time and higher throughputs. Our proposed method reduces unnecessary network use, i.e. , we decrease the number of data copy by reusing the backup data. Also, our on-line scaling operation can be processed parallel by selecting adequate nodes as new node. Our performance study shows that our method results in significant reduction in data copy time.     

An improved R-tree based on childnode''s probability

R-Tree is a good structure for spatial searching. But in this indexing structure,either the sequence of nodes in the same level or sequence of traveling these nodes when queries are made is random. Since the possibility that the object appears in different MBR which have the same parents node is different, if we make the subnode who has the most possibility be traveled first, the time cost will be decreased in most of the cases. In some case, the possibility of a point belong to a rectangle will shows direct proportion with the size of the rectangle. But this conclusion is based on an assumption that the objects are symmetrically distributing in the area and this assumption is not always coming into existence. Now we found a more direct parameter to scale the possibility and made a little change on the structure of R-tree, to increase the possibility of founding the satisfying answer in the front sub trees. We names this structure probability based arranged R-tree (PBAR-tree).     

Integrating GIS Web services based on mediating architecture

The geographic information service is enabled by the advancements in general Web service technology and the focused efforts of the OGC in defining XML-based Web GIS service. Based on these models, this paper addresses the issue of services chaining,the process of combining or pipelining results from several interoperable GIS Web Services to create a customized solution. This paper presents a mediated chaining architecture in which a specific service takes responsibility for performing the process that describes a service chain. We designed the Spatial Information Process Language (SIPL) for dynamic modeling and describing the service chain, also a prototype of the Spatial Information Process Execution Engine (SIPEE) is implemented for executing processes written in SIPL. Discussion of measures to improve the functionality and performance of such system will be included.     

Tracking data management using topology of moving object database system for moving object constrained trajectory in LBS application

Advances in wireless technologies and positioning technologies and spread of wireless devices, an interest in LBS (Location Based Service) is arising. To provide location based service, tracking data should have been stored in moving object database management system (called MODBMS) with proper policies and managed efficiently. So the methods which acquire the location information at regular time intervals then, store and manage have been studied. In this paper, we suggest tracking data management techniques using topology that is corresponding to the moving path of moving object. In our techniques, we update the MODBMS when moving object arrived at a street intersection or a curved road which is represented as the node in topology and predict the location at past and future with attribute of topology and linear function. In this technique, location data that are corresponding to the node in topology are stored, thus reduce the number of update and amount of data. Also in case predicting the location,because topology are used as well as existing location information, accuracy for prediction is increased than applying linear function or spline function.