城市绿化潜力分析初探--以吉林市为例

建筑与绿化争地是城市建设面临的突出问题。如何对城市绿化潜力作出科学评价，是城市绿地规划的关键所在。以吉林市为实例，对城市绿化潜力评价模式及绿化用地潜力分析方法以及掘城市绿化潜力的措施进行了初步探讨，力求为城市生态环境建设提供科学依据。     

城市园林绿化思考

加快城市绿化建设,改善城市生态环境,是现代化城市建设中不可缺少的内容.城市园林绿化中也存在亟侍解决的问题.本文阐述了城市园林绿化的内涵和意义,在城市绿化管理、施工、绿化养护以及加快城市园林绿化建设的对策等进行了探讨,提出了建议.     

浅谈如何提高城市绿化水平

结合城市的地域特点,探讨了绿化对于改善城市环境、空气质量、人们生活质量的重要性,介绍了如何把不同种类的植物与建筑相结合,采用多种绿化形式来提高城市绿化率。     

浅谈秦皇岛市北戴河区垂直绿化

近年来,随着城市化进程的加快,城市规模迅速扩大,城市人口与日俱增,与人们息息相关的城市生态环境问题越来越受到重视。各地政府也纷纷投资建造绿地,见缝插绿,以提高城市绿化水平。但是,有着"东亚避暑胜地之冠"的北戴河区可供绿化的用地紧之又紧,因此,能够增加城市绿化量的垂直绿化弥补了平面绿化的不足,丰富了绿化层次,软化了城市建筑的硬质景观,增加了城市建筑的艺术效果,使之与环境更加协调统一,生动活泼。     

浅谈城市垂直绿化的类型特点及作用

垂直绿化是指用攀援植物或其他植物装饰建筑垂直面或各种围墙的一种绿化方式,城市垂直绿化是城市园林绿化的重要组成部分,是城市绿化向空间的延伸和发展,以达到美化、绿化和扩大绿化面积,维护生态为目的。良好的垂直绿化能减少城市热辐射、阻滞尘埃、涵养雨水、增加空气湿度,绿化美化环境,增添城市绿化景观,建筑物密度大、空地少的城市区域显得尤为重要。本文就对垂直绿化的类型、特点、栽植要求、功能效果作用以及合理应用配置方面等做了详细的阐述,说明了垂直绿化在城市中应用的重要性。     

生态观在城市绿地环境中的应用

运用生态学的观点,提出了为改善城市环境,亟需构筑广域绿化系统、引入森林公园模式、拓展城市绿化空间,重新恢复良好的城市绿地环境质量,创建生态型城市.     

浅谈榆阳区城市绿化树种优化配置模式

通过充分对榆阳区地理气候环境和城市绿化优秀成果的调查研究,结合绿化树种的生物学特性,分析总结出了适合榆阳区不同地段的绿化树种优化配置模式,供生产实践参考。我们以调整林分结构,优化城市绿化树种配置模式为出发点,以提高榆阳区城市绿化水平。同时以改善人居生活环境,净化城市空气,增加人均绿化面积,促进林业产业发展为目标,对榆阳区城市绿化树种进行分析,探索适合榆阳区实际的园林绿化新思路。     

屋面绿化——上海居住区环境绿化初探

城市绿化是使城市达到生态平衡的行之有效的办法之一．针对上海城市特点，提出利用居住区建筑空间提高绿化覆盖率的途径──屋顶绿化，并对相应的设计、施工诸技术问题进行了探讨．最后介绍“东方明珠”塔座屋顶绿化中ＭＤ排水板应用实例，以启迪新技术开发，并借鉴应用于居住区屋面绿化，也可供广大建筑师与园艺师参考．     

淮北城市的绿化与美化

淮北市是煤城,随着城市的迅速发展环境污染问题十分严重,要改变城市环境质量,城市绿化是重要手段,文章系统分析了淮北市城市绿化的必要性,淮北市城市绿化和美化所取得的成绩以及城市绿化存在的问题,并对淮北未来的绿化建设进行了充分的展望,事实证明城市绿化能达到改变城市生态环境、美化城市工作和生活环境,创造新的城市景观,提高城市规划的布局质量等目的.     

浅析城市立体绿化的思考

立体绿化是城市绿化的重要组成部分,具有占地少、投资省、易管理、见效快、效果佳等特点,它综合利用城市空间资源,向空间索取绿化面积,既可提高城市绿化覆盖率,又可节约绿化用地,降低城市能耗,其生态和环境效益是非常明显的,值得大力推行.本文就其作用、应用及其实施中应注意的事项提出几点初浅的想法,供大家在工作中借鉴.     

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.     

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.     

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。     

A computer generator for randomly layered structures

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

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.     

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.     

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。     

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

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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     

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