国际大都市Sub—CBD建设刍议

国际大都市的Sub-CBD（副中心）建设正在形成方兴未艾的热潮，以往比较重视CBD（中央商务区）的系统研究，而忽视Sub-CBD的理论建设，本文从分析CBD与Sub-CBD的关系入手，研究了Sub-CBD的形成机制，提出了Sub-CBD的定义和对相关问题的理论认识，探讨了以步行街、过街天桥系统、地下街市为主要内涵的Sub-CBD建设新趋势，最后，本文还提出了Sub-CBD建设中必须引起注意若干建议。     

The state and the regulation of biodiversity: International biopolitics and the case of Mexico

In this article, the evolving forms of biodiversity politics are examined in the light of regulation theory and in the tradition of materialistic state theory (Gramsci, Poulantzas, etc.). Biodiversity politics is not so much oriented toward the conservation of biodiversity as towards the creation of a stable political-institutional framework for its commercialization. In this contested and contradictory process, the nation state plays a crucial role. After a few remarks on the theoretical assumptions, some basic elements of the international regulation system of genetic resources are presented. The main topics of international biodiversity politics beside conservation are: access to biodiversity and its genetic resources, benefit sharing from its use and intellectual property rights. A major problem of this system is the relationship between varying negotiation processes in different fora. Another closely connected problem is the contradictory relationship between different regulatory levels at different spatial scales (international, regional, local). These contradictions are analyzed for the case of Mexico. Central issues of Mexican biodiversity politics, and the different actors, forces and interests are outlined and discussed against our initial theoretical reflections. Bioprospecting projects in the south of Mexico have raised questions of legal and legitimate forms of access, which have generated growing concern and significant disputes within Mexico. Finally, some conclusions are drawn, binding together the theoretical with the empirical results of our study.     

广州市新老中心商业区土地利用差异研究

本文通过实地调查，分析了广州市新老中心商业区土地利用的差异，以及产生差异的主要原因，并对其土地利用结构和布局发生变化的理论意义进行了讨论。     

陕西交道全新世黄土-黑垆土磁化率的CBD研究

根据黄士高原中部交道剖面全新世黄土－黑垆土剖面的非磁滞磁化率和ＣＢＤ提取前后的磁化率、频率磁化率以及热磁分析结果,分析了磁性矿物的种类和磁畴状态,讨论了古土壤的磁化率增强,指出ＣＢＤ技术强有力的支持古土壤磁化率增强的土壤成因观点．虽然ＣＢＤ能非常有效地溶解土壤成因的磁赤铁矿,但并不是完全选择性地溶解土壤成因的磁铁矿颗粒．此外,通过对样品ＣＢＤ处理前后磁化率数据的分析,从土壤化学角度为黄土的风成说提供了新证据。     

企业银行商务活动视角下的城市CBD集聚机制——以广州市某企业银行为例

以广州天河北CBD某企业银行为例,通过收集其客户资料和短期贷款业务信息,结合深度访谈,分析该企业银行的基本情况、与客户的商务活动强度及其商务活动空间形态,并从银行业的空间行为机制等微观角度解释其成因,探讨商务产业的空间形态与微观行为机制对CBD发展演变的影响。研究表明,在宏观层面,银行客户和业务联系的分布总体上存在一定的空间递减规律,但也受地区经济发展水平、聚集经济区位以及银行自身的业务定位和市场开拓等的影响;在微观层面,银行业的商务活动在CBD内部高度集聚,其成因除了受以往分析的聚集经济作用外,还与银行业的业务模式密切相关。将银行业业务模式划分为与客户的商务活动联系模式和与辅助性生产性服务业商务活动联系模式两大类,前者的一对多业务模式和后者的客户媒介模式是促成CBD中以银行业为首的商务集聚的主要内在机制之一。具体而言,面对面业务的需求是CBD商务产业集聚的主要原因之一,多机构或多部门的协作要求,形成协作网络是产业集聚的另一重要原因,银行在CBD商务集聚中扮演着重要的角色。     

柠檬酸钠-重碳酸钠-连二亚硫酸钠对粗粒级铁氧化物的溶解作用

柠檬酸钠-重碳酸钠-连二亚硫酸钠(CBD)是否可以区分土壤和沉积物中碎屑成因和成土成因铁氧化物,是否可以溶解粗粒级的铁氧化物矿物存在诸多争议。为此,研究了各种粗粒级(>63μm)铁氧化物在室温和加热条件下CBD处理铁溶出量随时间的变化。结果表明,即使在室温条件下,CBD也能够溶解粗颗粒(>63μm)的铁氧化物,在CBD中溶解速度最大的是赤铁矿,铁的溶出量较多的是针铁矿,溶解速度较慢的是磁铁矿;在加热条件下,各种铁氧化物溶出量都整体升高。黄铁矿高温煅烧转化形成的赤铁矿,在常温和加热条件下溶出量相对较多,说明粒径越小,溶出量越大。     

北京CBD核心区某高层建筑试验桩施工技术

北京市CBD核心区某高层建筑拟建高度超过550m,建成后为北京市新地标建筑,其桩基础施工是保证整座建筑施工质量的关键。总结研究了该项目钻孔灌注桩试桩施工工艺的关键技术。     

Spatially non-stationary relationships between urban residential land price and impact factors in Wuhan city,China

Land price plays an important role in guiding land resource allocation for urban planning and development, particularly in big cities of fast developing countries where infrastructures and populations change frequently. Therefore, detecting spatially implicit information in the spatial pattern of relationships between land price and related impact factors is critical. Geographically weighted regression (GWR) analysis was conducted in this study for the purpose in Wuhan, China, by using a 10-year panel data set of residential land price. Based on twelve factors in three aspects (land attributes, location factors and neighborhood attributes), an evaluation index system of resident land price was established. The spatial distributions of estimated coefficients and pseudo t-values of three major explanatory variables (floor area ratio, distance to nearest center business district (CBD) and distance to nearest lake), obtained from GWR analysis, indicated that their relationships of the impact factors with land price are spatially non-stationary. The positive impact of floor area ratio on land price is more significant in highly developed areas than in less developed areas. Conversely, the negative impact of distance to nearest CBD on land price is larger in highly developed areas than in less developed areas. Moreover, wealthier dwellers may be willing to pay a higher price for a good lake view (especially views of small lakes), but infrastructure barriers (near some large lakes) cause negative effect. The outputs of this study, which provide detailed information on the relationships between land price and impact factors in local areas, are promising for urban planners to scientifically evaluate land price and make area-specific strategies.     

广州日本移民族裔经济的形成及其社会空间特征

伴随着改革开放的深入,在华外国人也日益增多。其中部分开始由短期滞在转向长期居留,日本人为典型之一。外国人居留模式的变化,对中国城市经济社会及空间景观带来前所未有的诸多影响,族裔经济的出现即是其中一个主要特征。本文在此背景下,运用实地调查、问卷与半结构化访谈等方法,实证了在广州日本移民族裔经济的形成,探讨了其规模、行业分布、形成过程及运作模式,通过案例剖析揭示了新时期在华日本移民族裔经济的基本特征及其社会经济影响。研究发现,在广州日本族裔经济体系业已形成,并且其仍在发展壮大之中。广州的日本移民对族裔经济依赖度高,族裔经济不仅是其生活的支撑,同时也是保持族裔身份认同的工具。广州日本族裔经济具有自我服务、本地植根的特征,同时族裔经济的发展在空间上也带来族裔景观,如广州的天河北地区即是一例。这些变化给中国的国际化城市建设和移民管理带来了新的课题。