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1.
Land consolidation plays an important role in increasing cultivated land, improving cultivated land quality and the ecological environment, and promoting the coordinated development of urban and rural areas. However, under the conditions of three decades of land consolidation being conducted and changing urban–rural human–land relationship, the areas of improvement in the land consolidation policy of China must be studied. This article analyzes the implementation and distribution characteristics of the land consolidation project completed in Shaanxi Province in 2018. Results show that land consolidation projects in Shaanxi are mainly land reclamation projects, cropland consolidation projects, and high-standard cropland consolidation projects. The increased cultivated land is mainly from land reclamation projects and cropland consolidation projects. The land consolidation projects in Aeolian Plateau Area, Loess Plateau Area, and Da Ba Mountain Area are mainly land reclamation projects. The land reclamation projects in Guan Zhong Plain Area and Qing Ling Mountain Area account for a large proportion. The spatial distribution of rural settlement consolidation projects, and rural settlement consolidation and land reclamation projects are mainly located in Guan Zhong Plain Area and distributed in the boundary area of Guan Zhong Plain Area and Loess Plateau Area. According to the characteristics of land consolidation projects and the changes of urban–rural human–land relationship, China should be prudent in or stop advancing land reclamation to increase cultivated land; cropland consolidation and high-standard cropland construction are vital ways to achieve China’s food security; and rural settlement consolidation should be carefully conducted in remote areas under the background of urbanization.  相似文献   
2.
金融作为经济增长核心助推器,对其空间集聚与扩散的经济效应准确识别,是沿海地区发展蓝色经济的关键所在。本文以山东省为例,通过建立金融发展空间关联网络识别区域的金融空间关联关系,基于此设计金融关联空间权重矩阵,对金融空间关联的经济效应进行检验。结果表明:山东省城市间金融发展具有稳健的空间关联性;区域金融发展水平同区域经济发展之间存在显著正向促进效应,金融发展能有效拉动本区域经济状况,对周边区域经济正向拉动效应相对微弱。建议从加快推进区域一体化进程,加强城际间金融交流合作,鼓励金融创新发展等方面充分发挥金融发展正向溢出效应,拉动沿海地区蓝色经济向好发展。  相似文献   
3.
数字化时代的经济运行方式呈现出数据驱动、万物互联、创新迭代的特征,数字经济的数字化、网络化、智能化属性对创新活动产生了深刻影响。运用空间杜宾模型,对361座城市2010-2018年度数据进行实证检验。检验结果表明,数字经济发展不仅能够带动本地创新绩效提升,而且对周边城市创新绩效也具有显著正向影响;与中、西部地区相比,东部地区数字经济对创新绩效的促进作用更强,空间溢出效应也更显著。由此,建议可从挖掘数据要素价值、搭建数字化平台、推动数字技术创新等角度发展数字经济,促进本地区和周边地区创新绩效共同提升。  相似文献   
4.
This paper studies the existence of two different supply operators in the peer-to-peer accommodation rental market for the city of Madrid. We specifically analyse spatial dependencies in price formation and whether the so-called professional hosts (i.e. those who have several Airbnb listings) set prices differently from single-property hosts. To this end, hedonic price models are estimated with and without spatial price dependence. Listings’ structural characteristics and accessibility measures to transportation hubs and sightseeing spots are considered in the regressions. Results provide clear evidence that price mimicking is higher among non-professional hosts whereas professional hosts set prices more independently.  相似文献   
5.
陈超凡  蓝庆新  王泽 《南方经济》2021,40(1):102-119
文章在理论层面探讨了创新对生态效率的影响机制,并基于城市空间关联与溢出视角,采用我国2007-2016年260个城市面板数据,运用空间计量模型检验了创新对生态效率的影响效应及多维度的城市异质性。进一步地,文章还通过对不同距离阈值上的创新空间溢出效应进行估计,测算了创新空间溢出的距离边界,检验了创新空间溢出驱动城市绿色发展的最佳地理距离区间,从而为增强区域创新合作以提升区域整体绿色发展水平提供了可供参考的量化依据。研究发现:总体而言,创新具有的增长效应、资源与环境效应、结构优化效应是促进城市生态效率改善的重要途径,且产出端创新对生态效率的驱动效应强于投入端创新;但创新对生态效率的影响具有显著的城市异质性,依赖于城市区位、所在城市群、环境政策、资源禀赋、创新能力和市场化水平;城市创新行为具有显著的空间溢出效应,但空间溢出随距离变化呈衰退趋势,350公里以内为创新活动的密集溢出区;生态效率也具有明显的空间溢出效应,经济越发达且联系越紧密、要素流动越自由、创新对生态效率驱动效应越强的地区,生态效率的空间溢出也越强。因此政府应完善创新激励政策、为创新外溢创造良好条件、注重引导创新的方向,并根据区域及城市发展实际,采取差异化的创新驱动绿色发展策略。  相似文献   
6.
This paper uses spatial panel methods and Chinese provincial data from 2003 to 2017 to study the spatial spillovers of financial openness on economic growth. The results show, first, a positive direct effect and an overall negative spatial spillover of financial openness on provincial growth. Second, there are two spatial spillover channels: a positive growth externality and a harmful resource competition among provinces. Third, we estimate the state dependence and dynamics of spatial spillover, and find that the negative spatial spillover is smaller in provinces with high levels of financial openness and in the long term; thus, the negative spatial spillover declined over time. These results are robust to the choice of SDM and GNS spatial econometrics methods and under different spatial weight matrices.  相似文献   
7.
By integrating Battese and Coelli’s (1995) model and the spatial autoregressive model (SAR), a spatial autoregressive stochastic frontier model for panel data is developed. The main feature of this frontier model is a spatial lag term of explained variables and the joint structure of a production possibility frontier with a model of technical inefficiency. The model addresses both spatial dependence and heteroskedastic technical inefficiency. This study applies maximum likelihood methods considering the endogenous spatial lag term. The proposed model nests several existing models. Further, an empirical analysis using data on the Japanese manufacturing industry is conducted and the existing models are tested against the proposed model, which is found to be statistically supported. The findings suggest that estimates in the existing spatial and non-spatial models may exhibit bias because of lack of determinants of technical inefficiency, as well as a spatial lag. This bias also affects the technical efficiency score and its ranking.  相似文献   
8.
This paper examines the effects of inward FDI on economic growth across the Spanish regions over the period 1996–2013, paying particular attention to the ‘headquarters effect’, namely that FDI is not always registered where it is effectively made but in the region in which the firm’s headquarters is located. By estimating a panel Spatial Durbin Model to allow for the detection of spatial spillovers, two main findings are reported. First, FDI does foster economic growth. Second, only when the headquarters effect is properly addressed do spatial spillovers arise. Hence, this effect is masking the impact of regional FDI spillovers on growth, which affects the reliability of the results and, consequently, FDI policies choice. Importantly, the results are: a) robust to the way of computing the headquarters effect; b) independent of the spatial weight matrix specification; and c) confirmed when splitting FDI into different industrial and service branches.  相似文献   
9.
深入分析我国“一带一路”沿线地区风险投资时空格局及影响因素,有助于促进创新创业与企业发展、提高区域科技创新水平。运用空间分析方法和空间计量模型,对2003-2018年我国“一带一路”沿线139个城市风险投资的时空分布特征及影响因素进行分析,结果表明:①沿线地区的风险投资发展具有不均衡性,呈现为沿海高、西部低的分异格局;②风险投资的全局自相关系数均为正,呈现出明显的空间集聚特征;③风险投资机构数、国家高新区数量、风险投资退出、政府引导基金发展、财政科技支出对区域风险投资具有显著促进作用,环境污染对风险投资有一定抑制作用。随着ESG投资理念逐渐获得认可,沿线地区可以通过提升绿色发展水平促进风险投资发展。  相似文献   
10.
Nonhub airports are an essential component in the National Plan of Integrated Airport Systems (NPIAS) of the United States in that they connect regional towns and small communities to the air transportation network. Understanding the interplay of operational and spatial factors in determining average passenger yield of nonhub airports provides airlines with valuable information for network planning and revenue management. This study examines factors contributing to the yield variation among nonhub airports in the U.S. Using ordinary least squares (OLS) based econometric models, this study captures the spatial dependence of passenger yield of nonhub airports, which tends to increase with a corresponding increase in distance to the nearest large hub airport. Nonhub airports surrounding large hub airports with higher passenger enplanements and higher average yields also have higher yields than other nonhub airports. In addition, this study finds the effect of Allegiant Airlines in lowering the average passenger yield of the nonhub airports served directly by the airline, which can be termed as ‘Allegiant Effect’. Findings of this study could provide valuable guidance for airlines to analyze network planning strategies and to identify future markets for growth and for policymakers when allocating resources to communities relying on these nonhub airports.  相似文献   
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