“绩效”二元视角下高速交通对旅游发展的影响及空间效应研究——以长三角地区为例

以长三角地区为研究对象,采用改进TOPSIS法和Super-SBM DEA模型分别测算高速交通优势度和旅游绩效,综合运用双变量LISA方法和空间面板杜宾模型,实证研究2005—2018年长三角高速交通对旅游绩效影响的空间效应及机理。结果表明:(1)2005—2018年,长三角高速交通优势度呈现“东高西低,中间高、南北两翼低”空间格局,且趋向相对均衡化态势。(2)旅游规模高值区集中于省会城市及高速交通干线附近;旅游效率高、较高值区沿“沪宁合—沪杭—杭甬”交通干线分布明显。(3)长三角高速交通对本地和邻近地区旅游规模、旅游效率均存在显著正向驱动效应;高速交通对旅游规模正向影响的直接和间接边际效应系数均大于旅游效率,这与高速交通的“双刃性”、“虹吸效应”及“错配效应”相关。(4)经济实力、旅游资源、产业机构高级化等对本地旅游绩效具有正向促进作用,而旅游资源、人力资本对邻近地区旅游绩效呈现负向外部性。     

Shell beads from Mississippian sites in the northern Yazoo Basin,Mississippi

ABSTRACT

In this paper, which focuses on the Mississippian period in the northern Yazoo Basin, Mississippi, I present some interesting findings from research done over the past century. In this area, most shell beads come from surface collections, or from excavated burials in cemeteries or ossuaries. Burial styles include extended, flexed, semi-flexed, and bundles, with very few cremations having been encountered. Bead burials also seem to reflect both common and elite people, and there are some interesting discoveries concerning association of shell beads. I will use 33 archaeologically investigated major sites as examples to illustrate an unexpected paucity of shell beads and other shell ornaments at some of the most heavily populated Mississippian sites in the Lower Mississippi Valley. Two other sites with shell beads in the uplands will be used for comparison.     

“长于姜水”、“都陈”与“葬于长沙”——炎帝传说流衍途径考察

在炎帝传说流衍的过程中,逐渐形成其"长于姜水"、"都陈"与"葬于长沙"的说法。诸说之间似乎缺乏必然的联系,但均有历史与文化的渊源。早在先秦时期,炎帝传说在东、西方流传之时,亦有缘起于南方说流行。随着东汉后期"三皇五帝"系统整合工作的完成,以及魏晋时期以现实生活中的帝王为标准,对传说中古帝王的生平事迹、都城、陵墓所在等关键环节的再次整合,尽管依旧保留着相当浓郁的传说色彩,然而炎帝的人格化倾向却日益凸现,这是古代帝王传说演变过程中一个值得关注的历史文化现象。"姜水"、"陈"与"长沙",似乎可以被理解为炎帝传说流衍过程中三个重要的地理标志,各地不同的炎帝传说借此得以整合,最终形成一个与黄帝并称的华夏民族始祖形象。     

高质量发展视角下黄河流域城市网络的结构演变与影响因素研究

城市作为人口、产业等要素聚集地，基于多要素解构城市网络对明确城市高质量发展的内涵具有重要作用。本文通过修正经典引力模型和社会网络方法，分析了高质量视角下黄河流域城市网络结构演变特征，利用QAP方法探求其影响因素。结果表明：(1)黄河流域城市网络基本形成了以郑州、西安、济南、太原、兰州等省会城市为核心，辐射至周边城市的网络结构，网络密度逐渐增大但整体较低，网络通达度相对较高且稳定。(2)城市网络社群内部关联高于社群间关联，说明高质量发展视角下黄河流域城市网络社群溢出效应主要以社群内溢出为主，社群外溢作用较少。(3)区位条件、交通基础设施、产业结构、政府支持强度、科技创新的差异对黄河流域高质量发展的城市网络演变有显著影响。     

高质量发展背景下黄河流域中下游绿色生产率时空分异研究

高质量发展背景下，以绿色全要素生产率（GTFP）视角考察黄河流域中下游各地市2003—2018年间的经济发展质量。首先，对GTFP进行测度并与传统TFP比较分析；其次，对GTFP增长率的内在动力进行解构；最后，采用变异系数和回归分析检验GTFP的收敛趋势，并验证其增长率的影响因素。结果表明：①GTFP较传统TFP表现出“中部塌陷”为特征的非均衡分布；②2003—2013年间，技术效率的提升是GTFP增长的主要推动力，2013年后技术前沿水平转变为主要动力；③在“追赶”效应下，各地市GTFP的差异呈缓慢缩小趋势；④该区域GTFP的提高受产业结构、财政科技投入等因素的显著影响。     

基于腾讯迁徙大数据的长三角城市群春运人口流动时空特征

开展城市群人口流动研究对促进区域人口有序流动和城市群协同发展具有重要的理论和实践指导意义。本文基于腾讯迁徙大数据，运用GIS空间统计和K-shell分解等方法，从人口流动总量、位序、时序和网络层级等方面，对我国长三角城市群2018年春运期间的人口流动特征进行系统研究。结果表明：①长三角城市群春运期间大规模的“返乡流”和“返城流”呈现明显的对称性，并分别于除夕和第一个工作日达到最高峰。②经济发展水平相对较高的上海、苏州、杭州等为劳动力输入型城市，而经济发展水平相对较低的盐城、安庆和滁州等为劳动力输出型城市。③长三角城市群内部人口流动网络具有明显的层级特征，其中上海和杭州是人口辐射核心城市，上海-合肥、上海-南京、上海-杭州等是人口流动的主体路径；空间上东部-西部横向人口流动最为频繁，大体呈现“Z”字形。     

Retracing Rivers and drawing swamps: Using a drawing tablet to reconstruct an historical hydroscape from army corps survey maps

Abstract

This article presents a novel geospatial approach to reconstructing and analyzing environmental change over extensive spatial and temporal scales, even in systems such as rivers and streams that are comparatively difficult to digitize. We used a drawing tablet and stylus to digitize features found on historical Army Corps maps across the spatially extensive landscape of the Lower Wabash River’s riparian zone, in Indiana and Illinois, USA. The methodology allows for an efficient reconstruction of sinuous and irregular environmental features, such as sloughs, and demonstrates the utility of digitizing historical maps to understand the evolution of surface water quantity and location across a landscape. We then compared these historical data to contemporary environmental datasets for the same study area to understand what changes have occurred over a 100?year period. This reveals that the hydroscape of the Lower Wabash River has been significantly altered by past human activity, notably through the reduction of swamps, wetlands, and sandbars, and the increase in drainage ditches and overall stream area. Notably, many of these historical alterations are not captured within current environmental datasets.     

Stone age predation on large African bovids

Crown height measurements are used to establish age distributions for several species of larger bovids represented in faunal samples from the Middle Stone Age (earlier Upper Pleistocene) deposits of the Klasies River Mouth Caves and the Later Stone Age (later Upper Pleistocene/Holocene) deposits of Nelson Bay Cave, South Africa. There are no obvious differences between the sites in the age distributions of the species they share, but there are significant differences in age distributions among species. Two basic patterns are apparent. In the first, characterizing the blue antelope (Hippotragus leucophaeus), roan antelope (Hippotragus equinus), Cape buffalo (Syncerus caffer), and giant buffalo (Pelorovis antiquus), the archaeological samples contain numerous very young animals and relatively few prime-age adults. At least in the buffalo samples, there is also a fair representation of old adults. In the second pattern, characterizing the bastard hartebeest (Damaliscus dorcas or D. niro) and especially of the eland (Taurotragus oryx), prime adults are far more prominent relative to younger and older age groups. The first pattern is similar to the natural pattern of attritional mortality that probably characterizes all healthy, stable populations of free-ranging large ungulates, while the second is more reminiscent of the age structure of live herds. The first pattern may reflect hunting focused on individual animals, particularly those whose age made them most vulnerable, while the second may reflect the susceptibility of certain species to driving, so that whole groups could be killed in traps in which differences in age had no meaning.