跨界城市的发展和规划问题初探

在我国，城市跨界发展是近几年才出现的城市空间类型，它们主要是由传统计划经济体制下以切块设市方式形成的城市发展演变而来，其中以长江三角洲、珠江三角洲等经济发达地区为突出。跨界城市的发展向传统的以城市为主体，以物质形态规划为核心的城市规划提出了挑战，本文以苏锡常地区为例，分析了跨界城市发展的若干特征与问题，并对其规划发展进行了初步的探讨。     

试论城市地貌环境与城市道路系统的关系*——以四川省几个城市为例

本文分析了城市地貌环境对城市道路系统的影响,认为地貌过程不仅影响了城市道路的建设和管理,而且是城市道路系统布局和发展的重要控制因素。以四川省几个城市为例,分析了山地城市、丘陵城市和平原城市道路系统的不同特点。     

青藏高原夏季地面有效辐射随高度的变化

根据1979年5-8月青藏高原热源观测资料,作者分析了高原上长波辐射随海拔高度的变化特点.地面辐射随海拔的的变化很缓慢,大气逆辐射随高度增高而很快减小,地面有效辐射在观测高度范围内(500米以下)则随着测点增高而增大.因此,如果将平原地区观测资料配合的计算有效辐射公式用于高原,其值将系统性偏低.为了表示平原与高原不同高度有效辐射的差别情况,作者根据观测资料求得了地面有效辐射与海拔高度的关系式.     

我国蚕桑丝织业探源

本文根据历史传说、古籍记载、考古发掘,阐述我国蚕丝织业的起源是多中心多源头的,并从蚕、桑生长的适宜生态环境分析,说明黄河中下游及长江下游地区为蚕桑丝织业发源地的合理性.     

低次趋势面描述云南地势宏观特征的探讨

作为趋势面分析方法的一个试例,本文用海拔高度与局部地势二个参数表征地势特征,将云南省按经纬方格划分为214个区域,讨论了绝对地势和局部地势的宏观特征。     

初探海南岛城镇体系

本文探讨海南省主岛上城镇体系的产生、组成、序列(等级)及城镇间的引力(影响)等问题。     

试论我国城市发展方针

在执行重重工业的发展战略和城乡分割体制的计划经济背景下,我国制定了“控制大城市规模,合理发展中等城市,积极发展小城市”的城市建设方针。但是分析表明,这一方针不能适应市场经济和对外开放形势的需要,也不符合我国人多地少、农村剩余劳动力多的国情,必须调整现有的城市发展方针,选择适宜的城市化发展道路。因此,本文就适度发展大中城市,提高城市现代化水平;加速乡村城市化,积极合理发展小城镇;以及根据不同地区的具体情况,因地制宜地指定城市化途径等方面作了探讨。     

试论我国历史文化名城的类型及其特征

本文论述了历史文化名城的涵义,指出我国历史文化名城的空间分布特征,阐述划分名城类型的方法。运用比值法,将我国99座历史文化名城分成六大类型,分析每一类型的主要特征,对城市建设和旅游业的发展提出建议。     

AN APPROACH TO REPRESENTING THE SPATIAL STRUCTURE OF THE INFORMATION SOCIETY

With recent advances in information and communications technologies (ICT), traditional conceptualizations and models of spatial interaction need updating. In a previous paper, this author developed an analytical framework that incorporated telecommunications capabilities as well as transportation modes and residential and work locations into a unified representation of the “geography of opportunities” (Shen, 1999). In this paper, the initial framework is extended by the inclusion in the formulation not only of employment opportunities, but also of other types of opportunities. Each type of opportunities is distributed among three components of geographic space: the physical space, the hybrid space, and the virtual space. The effects of ICT are captured by: (1) the saving of travel time for people who can partially substitute telecommunications for transportation as means to access opportunities in virtual and hybrid spaces and (2) the migration of opportunities from physical space to virtual and hybrid spaces. Individuals' position in the emerging spatial structure of the information society is measured in terms of accessibility to a wide range of economic and social opportunities. This new approach is shown to be an operational and promising analytical tool in a hypothetical setting. However, its refinement and application is currently constrained by the lack of systematically collected data on many aspects of the human geography. [Key words: telecommunications, human geography, spatial structure, spatial analysis.]     

TOWARD AN INTEGRATED APPROACH TO THE GEOGRAPHY OF INTERNATIONAL TRADE

An increased global interdependence poses both opportunities and obligations for a revitalized geography of international trade. THis subject area has never acquired a satisfactory focurs because its practitioners have taken a limited view of their topic, have neglected related work in other disciplines, and have failed to consider the policy implications of their study. As a remedy, this paper proposes a geography of international trade based upon three interrelated problem areas: the decision-making processes, the spatial fabric, and the space-time metric of world trade.     

AN APPROACH ON THE INDUSTRIAL STRUCTURE AND INDUSTRIAL LOCATION IN WEST CHINA

WestCl1ina,includingSl1aallxi,Gansu,Qingl1ai,Sicl1uan,GuizhoualldYunnanprovinces,alol1gwitl1Xil1jial1g,NingXia,WesternlnnerMongolia,Tibetand'Gual1gxiautonon1ousregi0l1s,isintl1ei11teri0roftheEurasiancontinentandfarfromtllesea.ltcoversanareaof6.8lnilli0nsquarekl11,constitutillg69PercentofCl1ina'stotallal1darea.ltl1asapopulati0nofab0ut3OOl11illiol1,acco[lntingfor27Percent0ftllecountry'stotal,about5llllin0ritiesbesidesHansliveincompactc0l11l1lul1itieshereandthePOpulatiol1ofl11inoritiesis7…     

广东城市化进程的思考

认为广东至2010年的城市化目标以50%为宜，在城市化进程中，下列问题值得重视；加速发展中小城市；采取城乡一体化发展模式；逐步建立若干个大都市圈；依法做好土地利用规划；注意城市分质供水的发展趋势；建设多功能的城市；国家、企业、个人多元化参与城市化的进程。     

降雨径流模拟试验中小流量电测方法的研究

本文就电阻法测流的电压-流量非线性关系进行了探讨,提出了线性处理的方法,并设计了具有良好线性关系的测流槽。加上电测线路的高稳定性与测流系统较优的讯噪比,使得实验室降雨迳流模拟实验的分析研究十分方便。另外,还解决了由于水质不纯而导致的电极极化效应。最后,文章给出电阻法测流与体积法的精度对比结果。     

旅游者行为规律与旅游地图编制关系的探讨

旅游者行为规律是旅游地理研究的一个方面,行,吃,住,游,娱,购行为是旅游者空间行为的重要方面,它与旅游地图有着双向导的密切关系,是旅游地图的主要内涵。旅游实施行为指导旅游地图编制,旅游地图为旅游者引导旅游实施行为,为其提供服务。因此,研究旅游者行为规律对旅游地图编制和产品开发有着重要意义。     

中国城市投资环境分析

本文运用熵的原理探讨了中国城市投资环境的熵状态特点和熟化类型，并在此基础上提出了完善城市投资环境的若干措施。     

佼木溪沟谷地貌与林木生长的探讨

佼木溪位于武陵山腹地。境内沟谷纵横,岭脊镶嵌分布,由于山文结构、山体高度与幅度以及流域形势的影响,不同沟坡林木生境各异。不同林种覆盖区对谷坡过程的反作用差异明显。如何选择与人工林适宜的生境条件,并力求林分结构合理,属一值得重视的问题。     

城乡一体化若干问题初探

论述了城市一体化的涵义，指出了农业现代化、城乡经济一体化、基础设施的革新、城乡生活水平与生活质量提高、城乡生态环境美化是城乡一体化实现的条件，阐述了乡村城市化、城市现代化、改革开放政策引进外资等是现阶段我国城乡一体化发展的主要动力。     

从太湖流域旱涝史料看历史气候信息处理

历史气候信息处理建立在信息提取的基础上,目的在于建立一套方法,将定性的历史气候信息转化为气候变化参数,并消除各种不均—性,从而建立历史气候序列。本文着重介绍建立太湖流域历史旱涝等级序列的方法与步骤: 1)确立信息源,建立信息网络;2)站点等级的确定与订正;3)弱信息处理;4)信息的综合。     

OPTIMIZATION IN ORGANIC SYNTHESIS.AN APPROACH TO OBTAINING KINETIC INFORMATION BY SEQUENTIAL RESPONSE SURFACE MODELLING.OUTLINE OF THE PRINCIPLES

A method is presented by which it is possible to estimate the initial rate of chemical reactions when theexperimental conditions are varied according to a response surface design.The method is intended as acomplementary method for analysing data obtained from experiments in synthetic chemistry when theobjective is to optimize the yield of the reaction.Data obtained by simulations have been used to develop the method.From the simulated reactions itis shown that sequential analysis of the chemical yield of the reaction makes it possible to estimate modelswhich describe how the parameters of the response surface of the yield vary over time.The derivativesof these time functions of the response surface parameters can be used to define a rate function whichdescribes how the variations in the experimental conditions influence the rate of the reaction.It is shown how such rate functions can be used to afford reasonable estimates of the initial rates ofthe reaction.The initial reaction rates thus estimated can be used to determine the kinetic order of thereactants and also to provide estimates of the activation energy of the reaction.A thorough discussion of how canonical analysis of the rate function may assist in the elucidation ofreaction mechanisms is given.