大城市保障性住房空间布局的社会问题与治理途径

本文研究了北京、上海、南京等五大城市保障性住房空间布局特征,指出大城市保障性住房普遍存在空间选址偏僻、大规模集中建设、配套设施不完善等现实问题.在分析以上问题形成原因的基础上,认为大城市保障性住房集中建设在偏远郊区可能导致社会隔离与排斥加剧、出现城市贫民区与贫困文化、贫困的代际延续与社会风险加剧等一系列社会问题.因此建...     

北京流动儿童义务教育设施的空间不均衡研究——以丰台区为例

以北京以及丰台区的适龄流动儿童分布和公立小学分布数据为例,采取社会地理学空间匹配的分析方法来测度流动儿童接受义务教育的空间不均衡性。结果显示,无论在市域、城区还是街道尺度,流动儿童就学需求和教育资源供给之间的空间不均衡现象都存在。据此,建议在学区划定时不仅要考虑常住户籍家庭儿童的数量,也要考虑校区吸引流动儿童的数量,并在流动人口集中的城乡结合地带,应尽量增设新的教育设施;或在现有教育资源的情况下,借助集体通勤方式提高这些教育设施的可达性,使更多的流动儿童得到就近接受义务教育机会。     

京津冀区域空间格局及其优化整合分析

本文以京津冀区域空间结构为研究对象,从点、线、网络和域面四个基本空间要素入手,研究提升区域竞争力的空间整合规律.研究认为,京津冀区域人口和城镇体系的空间分布不均衡,一方面,以自然条件为基础,呈现东南集中特征,另一方面,中小城镇分布以京广、京九、京哈铁路等为依托,呈现以北京为中心的强向心分布;城镇带分布大体可划分为京广线...     

城市群产业结构与分工的测度研究——以辽中南城市群为例

城市群产业结构分工及状况如何会必然直接影响其发育程度及其国际竞争力,因此科学合理测度城市群产业结构与分工程度,具有十分重要的实践意义。运用区位熵灰色关联分析方法研究辽中南城市群2009年产业结构与分工状态,得出结论:①宏观层次上,辽中南城市群产业结构总体相似程度较高,产业结构地域分工不明确;②中观层次上,城市群各城市产业结构趋同现象虽然明显,但产业的地域分工已经开始显现;③不同产业与辽中南城市群的相似程度不同。通过上述研究,以期在实践上为辽中南城市群的产业结构调整提供参考意见。     

Spatial determinants of productivity growth on agri‐food Spanish firms: a comparison between cooperatives and investor‐owned firms

This study analyses the effect of the spatial factor, location, and interaction effects among peer companies, on the productivity growth of agri‐food companies in Spain. With this aim, we build a productivity growth index and apply a multiequational Seemingly Unrelated Regression on a sample of 344 Spanish cooperatives and investor‐owned firms for the period 2010–2012. Our findings show that agri‐food firms are influenced by spatial factors finding interesting differences between cooperatives and investor‐owned firms. With regard to the geographical location, cooperatives in the western of Spain show higher productivity growth rates, whereas investor‐owned firms in the northeast of Spain present better results. The interaction effect among closer peer companies is also a relevant factor to determine the productivity growth in agri‐food companies. This factor is more relevant for cooperatives than for investor‐owned firms.     

An assessment of the economic and environmental potential of biomass production in an agricultural region

The establishment of deep-rooted perennial species and their processing for biomass-based products such as renewable energy can have benefits for both local and global scale environmental objectives. In this study, we assess the potential economic viability of biomass production in the South Australian River Murray Corridor and quantify the resultant benefits for local and global scale environmental objectives. We model the spatial distribution of economically viable biomass production in a Geographic Information System and quantify the model sensitivity and uncertainty using Monte Carlo analysis. The total potentially viable area for biomass production under the Most Likely Scenario is 360,728 ha (57.7% of the dryland agricultural area), producing over 3 million tonnes of green biomass per annum, with a total Net Present Value over 100 years of A$ 88 million. The salinity in the River Murray could be reduced by 2.65 EC (μS/cm) over a 100-year timeframe, and over 96,000 ha of land with high wind erosion potential could be stabilised over a much shorter period. With sufficient generating capacity, our Most Likely Scenario suggests that economically viable biomass production could reduce carbon emissions by over 1.7 million tonnes per annum through the production of renewable energy and a reduced reliance on coal-based electricity generation. Our analyses suggest that biomass production is a potentially viable alternative agricultural system that can have substantial local scale environmental benefits with complimentary global scale benefits for climate change mitigation.     

中国制造业的市场集中、地理集聚与企业绩效

本文研究我国制造业的市场结构与地理分布对企业全要素生产率的影响.以中国工业企业数据库的大样本数据为基础,采用LP法计算企业生产率,构造市场集中度指标和地方化经济、城市化经济两个集聚指标,进行了多方位的计量检验.研究结果表明,制造业的市场集中不利于企业生产率的提高,代表专业化水平的地方化经济促进了企业生产率的提升,度量行业间多样化集聚的城市化经济对企业生产率没有显著的影响.市场集中对出口企业的负面影响不明显,控制市场集中和地理集聚后,出口企业生产率高于非出口企业,出口的“生产率悖论”并不存在.     

城市扩张与集约农业背景下浅层地下水重金属污染特征空间分析

地下水是城乡结合部和农村地区的重要饮用水源之一,城市的扩张和农业集约经营对地下水的影响日益明显。本文以典型区—沈阳沈北新区为例,以地下水重金属为评价指标,采用经典统计和地统计的方法,分析城乡交错地区地下水污染程度和空间分异性特征,旨在为类似地区土地利用规划和地下水环境管理提供科学依据。结果显示:Fe、Mn超标率较高,分布范围较广;Cd、Hg分布集中,受城镇化的影响较为明显;Pb与集中养殖产业分布关系密切;As的分布与当地化工企业有关;Fe、Mn空间变异性强,空间异质性主要受自然条件等结构性因素控制;Cd、Pb、Hg空间变异性中等,As空间变异性弱,Cd、Pb、Hg、As这四种元素空间异质性的形成主要受人为活动等随机因素的影响;初步发现Fe和Mn,Mn和As有相似的来源。     

Local poverty reduction in Chile and Mexico: The role of food manufacturing growth

This paper analyzes the relationship between local poverty and food manufacturing growth in Chile and Mexico using propensity score matching, differences in differences and spatial econometrics methods. We focus on food manufacturing as a sector with a number of characteristics that make it potentially pro-poor, and whose incentives for spatial distribution may either strengthen or dampen its poverty reduction potential. The overall results indicate growth in food manufacturing employment contributes to local poverty reduction.     

省域环境技术效率空间视角分析

通过构建环境污染综合指数,本文首先采用SBM非期望产出模型测度了我国29个省（市）2000—2009年环境技术效率。在此基础上运用探索性空间数据分析,结果发现省域间环境技术效率存在显著的空间依赖性,其自相关性已不容忽视。通过进一步利用空间面板数据模型对其影响因素进行实证分析后的研究结果表明：一个地区的环境技术效率与其所处位置及周边环境密切相关,并且受到邻近省份结构性差异误差冲击,这体现为各省份在经济发展水平、FDI、对外开放度和治理投资额等空间影响因素的差异。经济发展水平、外商直接投资和对外开放度均显著提升了各省份环境技术效率,而产业结构、环境治理投资额与环境技术效率负相关,环境治理投资效果并不显著。