乡村旅游对贫困山区农户多维贫困的影响研究

在分析乡村旅游对农户多维贫困影响机理的基础上,利用陕西4市22个乡村旅游扶贫村农户调查数据,采用内生转换回归模型,定量分析了乡村旅游对贫困山区农户多维贫困的影响。研究发现:多维贫困程度越深,农户参与旅游比例越低,乡村旅游不具有天然益贫性;参与旅游能够显著减缓农户的多维贫困。从单维贫困看,乡村旅游对调查地农户的经济、教育、生活水平和权利维度具有显著的减贫效应,其中对生活水平的减贫效应最大,健康维度效应不显著;参与和未参与乡村旅游的农户在多维贫困以及经济、生活水平维度的减贫影响因素存在着显著差异,而在教育、健康、权利维度的减贫影响因素差异不大。据此,从乡村旅游经营、精准帮扶、权益保障等方面提出对策建议。     

基于MWVD的中心城市扩展与城市群整合研究

本文拟运用MWVD(Multiplicatively Weighted Voronoi Diagram)方法,从中心城市郑州影响区范围的历史扩展演化入手,以河南周边省会城市的发展竞争为背景,探讨中原城市群整合的方案和思路。通过定量计算与空间可视化模拟显示,得出结论:对于河南而言,仅实现郑汴一体化对于提升中心城市的辐射影响力还是不够的,必须尽早实现郑汴洛一体化,甚至中原城市群一体化,才有利于凸显组合型的辐射力和影响力。     

港口连通性及其影响因素的时空差异——以中国环渤海港口为例

为明确港口连通性及其影响因素的时空差异，基于港口供应链视角，从港口面向内陆、内贸和外贸连通能力构建港口连通性模型，并借助空间计量模型对2002-2017年间中国环渤海港口连通性及其影响因素的时空差异进行测度。结果表明：①除天津、青岛和大连港连通性最强外，内陆、内贸和外贸连通性最强分别为日照、唐山和烟台港，连通性最弱分别为威海、丹东和盘锦港，黄骅港增速最快；②连通性分布具有多核心-边缘特征和多门户港口并存格局；③连通性影响因素具有空间相关性和异质性，但均对连通性有正向促进作用。本文旨在使决策者明确港口运输的连通能力及其影响因素，为港口规划布局和提升在港口供应链中地位提供决策支持。     

Modelling spatial heterogeneity and nonstationarity in artifact-rich landscapes

In this paper we consider a crucial issue for survey archaeology: how we identify and make sense of the heterogeneous and often inter-dependent behaviours and processes responsible for apparent archaeological patterns across the landscape. We apply two spatial statistical tools, kriging and geographically weighted regression, to develop a model that addresses the spatial heterogeneity and spatial nonstationarity present in the pottery distributions identified by our intensive survey of the Greek island of Antikythera. Our modelling results highlight a clear spatial structure underlying different scales of pottery density as well as locally varying relationships between pottery densities and several environmental variables. This allows us to develop further testable hypotheses about long-term settlement and land-use patterns on Antikythera, including more explicit models of community organisation, and of the relationship between the island's geomorphological structure and its history of past human activity.     

基于GWR模型的长江中游城市群传统村落空间格局及可达性探究

以长江中游城市群170个传统村落为研究对象,利用核密度法探讨城市群传统村落的空间分布特征,使用谷歌地图全球搜索引擎与相关公式测算各传统村落的可达性。运用地理空间计量方法GWR回归模型重点剖析影响城市群传统村落可达性水平重要因子的具体影响程度并考量其空间异化效应。研究表明：①长江中游城市群传统村落存在三个高度集聚区,呈"品"形分布,其中有两大集聚区处于环鄱阳湖城市群内部。②传统村落可达性整体水平不高,时间成本较大,所在地区路网密度低,交通便利性不高,并受明显的支流效应影响,水系、山体和交通将一定程度上影响村落的可进入性水平。③地势高低与路网等级对传统村落可达性水平具有正向作用,邻水体距离对传统村落可达性水平呈负相关关系,而坡度值对可达性影响不显著。     

中国城乡居民收入差距的省区间比较分析

中国城乡居民收入差距问题早已存在,但目前对城乡居民收入差距的研究大都是从全国的角度出发,从省区的角度进行的定量对比研究很少。而现实中省区间的城乡居民收入差距却存在着明显的差别,这种差别对于我们进行具体的成因分析以及因地制宜地制定城乡居民收入政策具有重要的意义。为此,本文利用1978- 2000年各省区城乡居民收入统计资料,采用回归分析和相关性分析的方法,从空间分布和时间序列变化两个方面对省区间的城乡居民收入差距进行了初步研究,揭示了城乡居民收入差距由东向西逐渐扩大的空间布局以及时间序列变化上的不同步性,同时,还对形成这种空间不平衡和时间变化不同步的原因进行了初步探讨,为进一步的成因分析及城乡政策的制定奠定基础。     

Perinatal infant death at the Roman villa site at Hambleden,Buckinghamshire, England

The aim of the current work is to investigate whether perinatal infant burials at Hambleden Roman villa (1st–4th century AD), England, more likely represent infanticides, as has been contended by earlier workers, or natural deaths. Previous work has noted that when infanticide is practiced it is normally carried out immediately after birth and so will produce an age at death distribution tightly clustered around the gestational age of a full-term infant. By contrast, natural deaths in the perinatal period produce a rather flatter age distribution. In foetal and perinatal infants, long-bone length bears a close relationship to gestational age. The distribution of age at death in the Hambleden perinatal infants is compared with those from Roman Ashkelon, Israel, where earlier work showed evidence for infanticide, and Mediaeval Wharram Percy, England, where previous studies demonstrated a perinatal age at death distribution consistent with natural deaths. The comparisons between the sites are undertaken using four different methodologies: direct comparison of distributions of long-bone lengths, and comparison of ages at death estimated using two different regression methods and using a Bayesian methodology. Results consistently show a strong clustering in the Hambleden age distribution at an age approximately corresponding to a full-term infant. In this respect they resemble results from Ashkelon and differ from those from Wharram Percy. This was interpreted as supporting the suggestion of infanticide at Hambleden.     

Changes in shell gathering in an early agricultural society at the head of Ise Bay,Japan

We examined changes in shell gathering in an early agricultural society at the head of Ise Bay, Japan based on the analysis of almost 20,000 individual shell remains from four coastal settlements. We analyzed historical changes in the composition and size range of the shell species Meretrix lusoria. The most common species went from Crassostrea gigas in the early Middle Yayoi period (about 400–350BC) to M. lusoria in the mid-Middle Yayoi period (about 320–200BC). It is possible that the seacoast tideland, an environment suitable for C. gigas, was buried in sediment from the rivers and thereby transformed into muddy sand bottoms, an environment more suitable for M. lusoria. We also analyzed historical changes in the size range of M. lusoria. The mean size of M. lusoria increased significantly from the early Final Jomon (about 1250–1000BC) to the late Early Yayoi (about 500–400BC), from the late Early Yayoi to the early Middle Yayoi, and from the early to the mid-Middle Yayoi periods. Evidence suggests that during the Yayoi period, the demand for shells decreased and therefore, the pressure to collect M. lusoria also decreased. We concluded that the larger specimens of M. lusoria were collected selectively.     

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。