THE WELFARE ASPECTS OF SPATIAL PRICING POLICIES RECONSIDERED FOR A MONOPOLY CASE*

ABSTRACT. We reexamine the price structures and their welfare implications in three pricing regimes (mill, uniform and discriminatory) for a monopoly. We show that spatial price discrimination could provide the highest social welfare and, when consumers tastes are heterogeneous enough, also the highest consumer surplus. The superiority of spatial price discrimination is partially due to the larger output produced and partially due to differential treatment for consumers with heterogeneous tastes.     

批发业空间及其形成机制研究综述

通过对国内外批发业空间及其形成机制的研究梳理,将批发业的研究分为三个阶段,一是20世纪30-60年代,依附于区位论的批发业区位研究,学者受克里斯塔勒的中心地理论影响,流行用与批发贸易相关的指标来测量城市中心性;二是20世纪70-90年代,对批发业区位进行专门研究,并对其形成机制的探讨程度加深;同时,通过研究批发业来探讨城镇体系的文献也较为多见;三是20世纪90年代中期至今,批发业的空间优化,并与现代物流业紧密结合。我国对批发业的学术研究主要集中在批发市场方面,且起步较晚,研究内容上,对批发市场空间布局及其影响因素的研究较为深入,但缺乏批发市场的空间演变及其形成机制的研究。同时,批发市场货流空间的研究、批发业交易功能与物流功能的空间分离关注较少。     

南京市住宅价格时空分异格局及其影响因素分析——基于地理加权回归模型的实证研究

以2009-2017年南京市“一主三副”商品房社区为基本研究单元,运用GIS地统计分析中的普通Kriging插值法对“一主三副”住宅价格空间分布进行模拟和估计,并利用地理加权回归（GWR）模型探究社区属性、商业区位、交通区位、服务区位和景观区位等类型变量对住宅价格的影响规律。研究结果表明：①南京市房价总体上呈现主城向副城递减的中心外围模式,“一主三副”住宅价格空间结构呈现出同心圆和扇形融合的混合模型。②中心位势对主城住宅价格影响相对下降,对副城影响相对提升,交通位势表现出相反的趋势,住宅房龄、绿化环境对住宅价格的影响由主城向副城递减,山水景观的影响由长江沿岸向外围递减。③主副城住宅价格影响因素具有空间异质性,其中主城受距CBD距离、住宅建筑年代和绿化率的影响较大,而副城主要受距地铁站距离、距景观资源距离的影响。     

中国本土零售连锁超市空间扩张特征与格局研究——以永辉超市为例

连锁超市已经成为中国零售商业的主要经营业态,以中国本土大型零售连锁超市永辉超市为例,从空间扩张模式、扩张格局和区位选择等方面对零售连锁超市空间扩张特征进行研究。结果表明:伴随中国零售市场的发展和零售业的对外开放,永辉超市在1999至2013年15年间空间扩张速度递增,呈现指数型增长态势;空间扩张模式可以归纳为区域深耕式、接触式、跳跃式和复合式扩张四种,经营成熟期以后主要表现为复合式扩张;永辉超市在跨省际空间扩张中进入城市的次序与城市人口规模呈现弱的正相关性,在省域范围内,永辉超市门店的空间扩张具有首位分布趋向特征。     

Competitive Location and Pricing on Networks

In this paper we consider a location and pricing model for a retail firm that wants to enter a spatial market tvhere a competitor firm is already operating as a monopoly with several outlets. The entering firm seeks to determine the optimal uniform mill price and its servers' locations that maximize profits given the reaction in price of the competitor firm to its entrance. A tabu search procedure is presented to solve the model together with computational experience and an example.     

Competitive Location and Pricing on Networks

In this paper we consider a location and pricing model for a retail firm that wants to enter a spatial market where a competitor firm is already operating as a monopoly with several outlets. The entering firm seeks to determine the optimal uniform mill price and its servers' locations that maximize profits given the reaction in price of the competitor firm to its entrance. A tabu search procedure is presented to solve the model together with computational experience and an example.     

SPATIAL MONOPSONY AND MONOPOLY PRICING IN A STOCHASTIC ENVIRONMENT*

ABSTRACT. In this paper some of the important properties of the behavior of a spatial monopsonist (monopolist) facing a stochastic supply (demand) curve are derived. Under uncertainty, price setting and quantity setting behavior are no longer equivalent. Hence, spatial price discrimination has to be compared with spatial quantity discrimination with respect to expected profits. I prove three general theorems on how the ranking of the behavioral modes, in terms of expected profit, depends on how the stochastic component enters the supply (demand) and supply (demand) price functions. In particular, I prove that under monopsony one would expect a high probability of excess demand, in the sense that the firm would accept all deliveries at the preset price.     

SPATIAL PRICING IN INTERDEPENDENT MARHETS*

ABSTRACT. Conditions for spatial price equilibrium are derived for a set of firms in oligopolistic spatial competition, distributed at fixed locations in a heterogeneous region where consumer purchasing patterns are a probabilistic function of the price distribution rather than a deterministic function of proximity to firms. The resulting prices vary with accessibility to consumers or with the degree of local spatial monopoly, and result in non-zero profits for firms. Conditions describing the existence and stability properties of this spatial price equilibrium are defined, and are shown to be equivalent for two different hypotheses concerning disequilibrium pricing behavior: a partial price adjustment model and a Bertrand game. For two different profit goals, total profit maximization and profit rate maximization, it is shown that a spatial price equilibrium exists and is at least locally quasi-stable.     

携程旅行网旅游“新零售”空间格局及形成机制——以上海市线下门店为例

基于携程位于上海市的线下门店及相关POI 数据，运用 GIS 空间分析和地理探测器等方法，探讨携程旅游“新零售”空间格局、区位选址及形成机制。结果表明：①携程旅游“新零售”在发展初期，其区位选址仍具有向心性，但不如传统零售业对城市中心区位需求强烈，向中心城区边缘及城市近郊区域下沉趋势明显；②呈现集聚分布特征，形成“多中心-外扩”式分布模式；③区位选址依赖于以写字楼为主的线下生活服务场景，对商务办公区的偏好超越对商业中心的偏好。交通区位、传统旅行社分布、地租水平影响次之，CBD 趋近度、商圈等级影响较小；④携程线下门店空间格局及区位特征是企业业务板块规划、地理实体空间竞争、区域产业配套水平共同作用形成的结果。     

SPATIAL HEDONIC MODELS OF AIRPORT NOISE,PROXIMITY, AND HOUSING PRICES*

ABSTRACT Despite the refrain that housing prices are determined by “location, location, and location,” few studies of airport noise and housing prices have incorporated spatial econometric techniques. We compare various spatial econometric models and estimation methods in a hedonic price framework to examine the impact of noise on 2003 housing prices near the Atlanta airport. Spatial effects are best captured by a model including both spatial autocorrelation and autoregressive parameters estimated by a generalized moments approach. In our preferred model, houses located in an area in which noise disrupts normal activities (defined by a day–night sound level of 70–75 decibels) sell for 20.8 percent less than houses located where noise does not disrupt normal activities (defined by a day–night sound level below 65 decibels). The inclusion of spatial effects magnifies the negative price impacts of airport noise. Finally, after controlling for noise, houses farther from the airport sell for less; the price elasticity with respect to distance is −0.15, implying that airport proximity is an amenity.     

互联网技术应用对零售业空间组织影响研究进展

互联网技术应用对零售业空间组织的影响已成为当今学术界研究热点。本文利用文献资料法和对比分析法,梳理了国内外互联网技术应用对零售业空间组织结构、零售企业区位选择与布局、市场空间等方面的影响研究,并提出了未来人文地理学须进一步强化的研究内容。结果表明：20世纪90年代中期以来,互联网技术应用对零售业空间组织影响的研究成果日益丰富,且涉及到经济地理学和商业学等学科,研究方法主要以定性为主,且定量研究日益增多,但对互联网技术应用对传统零售业区位选择和销售腹地的影响、中小网络零售企业空间组织、运输距离对网络零售企业销售空间影响以及出口跨境网络零售企业销售空间格局等方面研究还需完善,未来研究应注重吸收其他学科理论和方法,强化实证研究结论的科学性。     

RETAIL AMENITIES AND URBAN SPRAWL

This paper examines the interaction between local retail markets and population density in cities. We demonstrate that welfare costs of urban sprawl need not come only from road congestion or environmental externalities, as often suggested in the literature. A city also forgoes potential agglomeration economies in retail when it settles into a spatially sprawling equilibrium. Our theory predicts an additional spatial equilibrium where the city is inefficiently dense, characterized by strong retail agglomeration economies within the core.     

国内外城市居住空间研究的回顾与展望

住宅作为城市的重要职能和城市空间结构的重要组成部分,长期以来地理学、经济学、社会学、政治学等不同学科的学者一直关注城市居住和相关理论的研究。本文在全面阐述西方居住空间研究的理论、方法、研究领域和研究成果的基础上,对我国有关城市居住空间的研究领域和研究进展进行回顾,并展望有待进一步深化研究的领域。     

PRICING POLICY REACTIONS TO AGGLOMERATION IN A MARKET WITH SPATIAL SEARCH*

ABSTRACT. Price dispersion (variation) and agglomeration are common characteristics of spatial markets, in particular, markets with imperfect consumer information and search. However, pricing and location strategies in these markets are not well analyzed since spatial search is difficult to model without restricting the spatial dimension of the problem. This paper analyzes pricing and location strategies in a market with spatid search using a probabilistic modeling strategy that does not restrict search patterns in the plane. Specifically, the analysis considers the pricing strategy of an isolated firm in response to the agglomeration of competing firms. Results indicate that spatial and temporal price dispersion are effective responses to competitors'agglomeration. However, the relative effectiveness of these strategies varies with market conditions. In addition, agglomeration can have some counterintuitive effects. This paper also provides insights into existing theories of spatial search and spatial competition in spatially-restricted (linear and circular) markets.     

SPATIAL PRICE POLICY AND THE DEMAND FOR TRANSPORTATION

For a spatial market of given radius transportation cost per unit sold is less under mill pricing than under any uniform pricing. This is true whether profit-maximizing monopoly prices or welfare-maximizing prices or any other prices are chosen.     

沈阳市住房价格空间分异格局及其影响因素研究

本文以我国典型的老工业城市沈阳为例来分析其住房价格空间分异特征与影响机理。通过大数据方法获取该市1450个住宅小区的房价及特征数据，利用Kriging空间插值法模拟其房价空间分布格局，并从社区、公共配套设施和交通出行等方面构建地理加权回归模型，探究各因子对房价空间分布的影响机理。结果表明：①沈阳市住房价格呈现出多中心的空间结构，且长白区域已成为新的价格峰值区。②特征因素对住房价格的影响具有显著的空间异质性，其中，公共配套设施和地铁站对房价表现出较高的影响力，并对住房价格的作用程度呈现明显空间差异性。③受“强政府、弱市场”等的长期影响，政府调控下的城市资源分配不均衡成为沈阳等老工业城市住房价格空间分异的根本原因。     

北部湾城镇群空间结构及其扩张规律研究

空间结构是优化城镇群地域功能的基础。根据新型城镇化和空间结构理论,用地统计、反距离权重等空间分析方法,研究广西北部湾城镇群空间结构分异规律得出：(1)北部湾城镇群以南宁市为中心向周边呈“核心—边缘”分异格局,时空集聚性和差异性渐趋扩大。(2)大城市空间聚集和结构分异不断增大,社会、经济要素空间扩张显著快于人口、土地要素,对外贸易和吸引投资是空间扩张的核心动力,非农化增长也是重要驱动。(3)城区面积与空间结构关系最密切,但投资、贸易、GDP、非农化扩张较快,人口、土地要素空间扩张显著滞后,各要素向大城市集聚的趋势显著,结构分异趋向扩大;绝大部分属于外贸、投资扩张型城镇。应强化南宁市集聚规模,提升工业化水平,扩大区内外合作,全面融入“一带一路”和大湾区新格局。     

四川盆地城市群主要城市通达性及空间联系强度研究

根据最短时间距离模型和综合通达性模型计算了四川盆地城市群内18个城市的交通通达性,并建立最短时间距离矩阵表征各城市之间的空间联系强度。研究表明:用最短时间距离计算的成都通达性最优,而重庆通达性居于第13位;综合通达性模型表明重庆通达性最好,成都居第2位,川东北城市也居于前列。研究还表明在四川盆地城市群内形成了以成都为中心的紧密联系的空间一体化。但是,四川省各城市与重庆的空间联系紧密程度却很低,形成了明显的"空间背离"。未来几年内重庆将成为四川盆地城市群内最重要的交通枢纽。     

商业微区位空间关联类型与测度

商业微区位空间关联是指城市街区范围内商业设施之间以及商业设施与其他城市设施之间的空间关系,是一种外部经济性现象。论文将空间关联划分为消费者主导型、商品主导型、结构主导型等。论文讨论了空间关联的测度指标,将关联度分为共栖型、依附型和区域型。共栖型表示商业设施之间的关联程度,依附型表示商业设施之间的依附程度,区域型表示区域内商业设施的总体关联程度。论文阐述了商业微区位空间关联分析的意义。     

SUPPLY ARMS AND OPTIMAL SPATIAL STRUCTURE*

ABSTRACT. A multi-plant producer has sole access to a region, and each of the plants processes a raw material which is drawn from its own exclusive supply area. Under these conditions what spatial structure of production (in terms of plant scale, plant frequency, supply-area size and supply-area shape) will enable region-wide or multi-plant profit to be maximized? The form of this optimal structure is shown to vary with prevailing level of price, which is exogenously determined.