“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。     

The Rolt Memorial Lecture 2017: Conserving the Waterways Heritage

ABSTRACT

This article describes the work of the Canal & River Trust in managing and conserving the heritage assets and the wider historic environment of the Trust's waterways in England and Wales. Various types of heritage assets are described, and the ways in which these assets are managed, including via archaeological recording, along with conservation-led repairs to historic engineering structures and other historic waterway-related buildings, are considered. New directions that offer effective and efficient ways of dealing with heritage assets are examined.     

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.     

基于新经济地理“3D”框架的旅游经济空间结构特征分析——以长江三角洲地区为例

本文借鉴新经济地理学的"3D"（density，distance，division）框架理论，构建了旅游经济空间"T-3D"分析体系，分别以旅游经济地理集中度、时空距离及旅游联系诠释了旅游经济空间的密度、距离及整合。以长三角地区为例，刻画了旅游经济空间的T-3D特征。研究结果表明：长三角地区各市旅游经济空间密度的数值差异明显，空间分布差异显著，整体呈现"南疏北密"的分布特征；长三角地区旅游经济空间距离总体较优，各城市间距离较近，且差异不大，呈现出"核心-边缘"特征；旅游经济空间整合表现为上海、杭州、苏州三足鼎立之势，呈现出"一核两翼"的区域旅游发展特征。通过对长三角地区的实证分析，验证了旅游经济空间"T-3D"分析体系的有效性。     

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.