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。     

“三江并流”区自然保护区对生物多样性和生态系统服务的维持作用

自然保护区对生物多样和生态系统服务的保护至关重要.以"三江并流"区为研究区,获取自然保护区、生态系统服务物质量和生物多样性保护优先区的空间分布数据,首先判识生态系统服务关键区,然后进行空间叠加分析,系统评估现有自然保护区对生物多样性和生态系统服务的维持作用.结果表明:(1)自然保护区对生物多样性对象的保护覆盖较为充分,3种生物多样性保护优先区的覆盖率均大于17%.(2)调节服务受保护状况不佳,其中,固碳服务和土壤保持服务关键区覆盖率小于研究区平均保护区覆盖率12.65%.供给服务和文化服务关键区的保护区覆盖率大于17%.(3)总体上,现有自然保护区对于维持研究区域内的生物多样性和生态系统服务具有重要作用,但仍存在保护空缺.研究能够为区域尺度保护地系统的合理规划提供科学依据.     

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.     

铁岭凡河自然保护区生物多样性及保护对策

铁岭凡河自然保护区是内陆湿地与森林生态型自然保护区,具有丰富的生物多样性,在论述保护区生物多样性及其保护管理现状的基础上,从依法保护和科学管理、处理好发展与保护的关系、加强生态旅游管理、开展科学研究几个方面,提出自然保护区生物多样性保护的对策.     

中国自然保护区管理中地方社区的参与

本文论述了在自然保护区,由于存在土地权属不明确以及在管理中对少数民族为主的地方社区的限制而产生的突出矛盾;事实上地方社区在生物多样性的保护中起到积极的作用,地方社区应该参与到保护区的建设和管理活动中.通过对当前普遍采用的"社区共管模式"的实施效果分析,在全面认识和尊重地方社区对生物多样性保护重要作用的基础上,提出对于未来保护区社区共管要鼓励地方社区的参与,并加强社区参与的能力建设.     

自然保护区的生物多样性测度

生物多样性是人类生存的基础,而自然保护区是生物多样性保护的重要方式,建立合理的生物多样性测度体系是自然保护区建设的重要方面.自然保护区的生物多样性包括三个方面:容量、通量和质量,它们从不同的侧面测度自然保护区的生物多样性.容量指自然保护区内生态系统类型、物种数的绝对多度和相对多度.物种丰富度是衡量生物多样性容量的较好的指标.通量是指不同自然保护区之间在生态系统类型或物种组成上的相似性与连通性,可以采用β多样性来衡量,如Cody指数和Li指数.当保护区之间的通量值较低时,需要进行整体插值,建立新的保护区.质量指自然保护区的保护对象的价值、特色与脆弱性,可以采用Li质量指数来测度.最后,讨论了基于生物多样性容量、通量和质量的保护区群网规划,认为通过保护区群网的建设,可以有效地保护更多的生物多样性.     

艾比湖湿地自然保护区生态系统评价

艾比湖湿地自然保护区具有多样性的湿地植物、较丰富的生物资源,是一处集生态保护、生物多样性保护为一体的超大型湿地自然保护区,在新疆北部生态环境保护中具有重大的作用.本研究采用多样性、代表性、稀有性.自然性、面积适宜性、稳定性、人类干扰性等七项指标对艾比湖湿地自然保护区进行评价,并就目前保护区所面临的问题提出了相应的建议.     

浅谈中国自然保护区的建设和可持续发展

中国是世界上生物多样性最丰富的国家之一,建立自然保护区和加强保护区的管理是保护生物多样性及其生态功能的最好方法。但我国的自然保护区在建立和保护过程中存在许多实际问题,因此要使保护区的功能得到充分发挥,做到有效管理．仍然还有很长的路要走。本文简单的论述了我国自然保护区的概况和主要存在的问题,并阐述了对自然保护区可持续发展的几点建议,希望通过这几个方面建议的实施可充分发挥保护区的作用,实现其可持续发展。     

郑州黄河湿地自然保护区生物多样性保护规划研究

郑州黄河湿地自然保护区湿地类型包含河流湿地、河漫滩湿地、草甸湿地等,保护区内生物多样性丰富.通过对黄河湿地生态环境的分析,指出生物多样性保护面临的威胁及其原因,在此基础上提出了保护区生物多样性保护规划的方法.     

生态旅游对自然保护区生物多样性保护的影响及对策

本文在分析生态旅游对自然保护区生物多样性影响的基础上,提出了自然保护区在开展生态旅游的同时,保护生物多样性的主要。     

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.     

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.     

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     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with     

Journal of Donghua University ( English Edition) Contents of Volume 31

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