生态旅游环境承载力研究-以净月潭国家森林公园为例

给出了生态旅游环境承载力的定义并揭示了其内涵。在深入研究生态旅游环境承载力的组成、性质、分类、计算程序及计算模型的基础上，计算了净月潭国家森林公园现有景区的生态旅游环境承载力，并提出了净月潭国家森林公园生态旅游环境承载力的优化策略。     

论生态旅游的可持续发展

生态旅游已成为当今世界旅游发展的潮流，我国发展生态旅游有着良好的自然条件和深远意义，本文阐述了生态旅游的真正内涵，并结合我们生态旅游的现状，制定了生态旅游的法制法规和管理措施，以此事保护我们的自然景观与文化遗产，使生态旅游达到可持续发展。     

河南省生态旅游的开发与可持续发展

章针对河南省众多山水自然资源的分布特点。分析了其开发生态旅游的条件，指出生态旅游的发展应吸取国内外同类旅游产品开发中的经验教训。应认识到生态旅游并不等同于大众旅游或自然旅游，它是把生态保护作为既定前提，把环境教育和自然知识普及作为核心内容的高层次以。在经营管理中应努力克服管理上的不协调，避免客流量失控及环境污染。本还提出河南省生态旅游可持续发展的对策：应认真制订生态旅游的发展规划，加强生态旅游     

生态旅游的生态性及其影响因素研究

探究实践中生态旅游发展的真实状况并分析其影响因素，对于完善生态旅游管理和推进生态文明建设具有重要意义.然而，目前衡量生态旅游核心目标实现程度的研究却相对较少，不利于评判现实中生态旅游是否真正生态.该文尝试提出生态旅游的生态性概念，构建生态性评价指标体系，在对生态性的可能影响因素进行理论分析并提出假说的基础上，选取47个国家生态旅游示范区为案例地进行实证研究.结果表明：1)生态旅游的生态性评价可以从环境保护、文化保护、环境教育、社区福利、自然基础、道德要求6个维度展开.2)案例生态旅游区的生态性整体处于一般水平，环境保护、文化保护和自然基础表现相对较好，其余方面需加强.3)生态旅游区类型对生态性有显著影响，表现为湿地型旅游区的生态性显著高于森林型，不同类型旅游区在各维度上的表现也有差异；同时，生态旅游区的生态性与其员工的生态旅游认知水平正相关，即员工的认知水平越高，生态旅游区生态性指数以及在自然基础、环境保护、环境教育、文化保护四个维度的得分越高，生态性越好；而地区发展水平对生态旅游的生态性没有显著影响.研究结果能够为实现生态旅游的可持续、高质量发展提供重要参考.     

武功山国家森林公园生态系统服务功能价值评估

采用定量方法评估武功山国家森林公园的生态系统服务功能价值,为武功山国家森林公园建设提供依据.武功山国家森林公园生态系统服务功能的总价值每年达26.954×108元.在各类服务功能价值中,调蓄功能最高,占生态系统服务价值总值的33.4%,其次是涵养水源价值,占总价值的25.3%,水源供给价值和固碳释氧价值也较高.说明武功山国家森林公园主要的作用表现为水资源保护和调节大气.在武功山国家森林公园生态系统服务价值中,直接经济价值为3.48×108元,间接经济价值为23.474×108元,是直接经济价值的6.75倍,应该在保护好现有良好生态环境的前提下发展生态旅游,促进公园可持续发展.     

类生态旅游:一种注重自然保护的大众旅游

生态旅游不等于大众旅游,对生态旅游概念的扩展也不能违背其内涵要求,生态旅游的概念也不能照搬到大众旅游．类生态旅游概念吸收了生态旅游概念中自然保护和社区参与的思想,是一种具有创新意义的注重自然保护的大众旅游,其旅游目的地为非原生的自然生态系统,其自然保护主要依靠生态管理、生态技术和社区参与．     

皖西天堂寨国家森林公园生态旅游开发的SWOT分析

在天堂寨国家森林公园旅游资源和客源市场分析的基础上,运用SWOT分析法,分析了其发展生态旅游的内部优势、劣势、外部机遇与挑战,确定了相应的发展策略,并提出了发展生态旅游应注意的主要问题。     

韶关生态旅游开发对策探讨

韶关生态旅游资源丰富,要合理开发必须坚持保护第一、社区参与、真品战略与保护游客四大原则,采用“护源”开发导向模式与“三Z”投入开发模式,树立自然保护与高效利用并举的“双赢”观念、加强区域旅游合作、加强人才培育、发展社区生态旅游与因地制宜发展生态旅游产业的开发对策。     

浅析集美生态型文教旅游环境的态势和发展

生态旅游正在国内外蓬勃兴起．二十一世纪旅游业发展的重要趋势是生态旅游。所谓生态旅游，是指旅游者进入某一特定的自然生态系统中．观察了解其生态系统的结构、功能和特点．以享受自然、了解自然为目的而进行的一种新型旅游活动。通过这种活动．人们更加热爱大自然．更加自觉地保护大自然。人们之所以对生态旅游情有独钟．是因为良好的生态环境、生态景观满足了人们日愈强烈的返朴归真的愿望。生态旅游是人与自然相互交融的一种旅游活动。     

贵州高原喀斯特山区农业生态旅游开发研究雏议

本文就农业生态旅游的定义，研究目的、方法学、任务及战略进行了论述，并以贵州高原喀斯特山区为例，对开发其农业生态旅游中的一些基本问题，借助多学科与系统分析方法进行分析和讨论。最后，对贵州高原存在的主要农业生态旅游资源类型作了划分，认为只有在保护自然与文化资源同时维持环境质量的前提下，通过农业生态旅游开发，发展多样化经济，提高人均收入，才能确保资源合理开发与经济的可持续发展。     

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.     

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