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...     

Markedness and its Interpretation in Language Use

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.     

Features of Women's language

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.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

低渗透非均质砂岩油藏启动压力梯度研究

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。     

On Tragic Consciousness In The Works By Ernest Hemingway

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.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that