Variabilité et fréquence des cycles de gel‐dégel dans la région de Québec, 1977–2006

Freeze‐thaw cycles are most common at the beginning or near the end of the winter season. These cycles have various effects on the ecosystems of Eastern Canada, affecting both biotic and abiotic components of temperate cold environments. Using air temperature minima and maxima from four meteorological stations close to Québec City, we determined the frequency of daily freeze‐thaw cycles for the last 30 years. The results show no significant increase in the number of freeze‐thaw cycles despite a small increase in air temperature. Polynomial curves describing the relationship between mean air temperatures and the number of freeze‐thaw cycles were calculated. Based on these equations and anticipating a climate change scenario, we projected future freeze‐thaw cycles. Assuming a 5 °C increase in mean air temperatures by 2100, we estimated that the number of days with a freeze‐thaw cycle could increase by approximately 20 days per winter. The increase in the number of such cycles will be concentrated during the coldest months of the winter (January and February).     

National identity,allegiance and constitutional change in the United Kingdom†

ABSTRACT. It has become conventional to discuss nationalism in terms of identity. While this approach is fruitful and illuminating, it can often be ambiguous, running together cultural, social, personal and political issues. It becomes particularly problematic when discussing multinationalism, the character of which may be confused by reference to national identity alone. Allegiance is used in this article to explore how a political commitment to the multinational state can coexist with a range of national and regional identities in the United Kingdom. The argument is that, recent constitutional changes notwithstanding, the multinational ideal involves still a state of distinctive national identities tempered by the habit of allegiance to legitimate British government.     

Devolution and national identity: the rules of English (dis)engagement

ABSTRACT. In this article I consider why the expected English backlash to the asymmetric UK devolution settlement has not yet materialised. Using a corpus of conversational interviews, I discuss the various ways in which people in England currently understand the relationship between national identity and political entitlement. I conclude that English political quiescence, far from constituting an enigma, is comprehensible in the light of the fact that members of the general public do not usually base their assessments of political legitimacy on calculations of English national self‐interest defined in contrast to Scotland. Rather, political issues tend to be judged with reference to principles of equity and procedural justice. English identity is rarely considered legitimate grounds for political voice. Rather, people are inclined to demonstrate a concern to balance the recognition of Scottish rights to national self‐determination, with a display of public reason, civility and civic responsibility understood to be normatively incumbent upon the English majority.     

Attitudes to Drought in Outback Communities in South Australia

This paper explores the perceptions of drought by residents in outback South Australia and their associated responses to the drought. Behavioural Geography methodology is used with data drawn from interviews with pastoralists, business owners, and residents of small outback towns and Aboriginal communities. Although they were not resident in the region, the perceptions of tourists were also garnered. The results show that perceptions varied between the groups of people interviewed. Outback residents contrasted their own frugal water use with reports of wasteful behaviour by foreign tourists. Local inhabitants were largely ‘accepting’ of the drought, having survived worse droughts in the past and over many years. They were therefore of the sentiment that they would cope with future droughts. Despite the sentiments of acceptance, the dropping groundwater levels and continued lack of rainfall were leading to growing concerns for the future. The concerns point to a boundary to community resilience to drought in outback South Australia.     

国外健康地理学研究进展

传统医学地理学研究从自然生态学角度出发,着重探讨自然环境对人类身体健康的影响。随着社会经济的发展,自然环境对人类健康的作用逐渐减小,社会文化环境成为影响人类健康,特别是城市居民身体健康的主要因素。本文回顾了20世纪70年代社会文化转型以来,医学地理学研究的重点转向以社会文化视角探究社会文化环境对人们身体健康,特别是心理健康的影响,以及医学地理学向一门新的健康地理学转变的过程,并梳理了新的健康地理学理论和研究内容的变化,总结了当前学科存在的一些问题,最后对新时期我国健康地理学的发展提出了展望。     

两代流动人口在城镇定居意愿的代际延续和变化——基于福建省的调查

本文利用一项福建省流动人口抽样调查资料,对两代流动人口在城镇定居意愿的差异进行了深入考察。结果表明,新生代流动人口在城镇的定居意愿虽已发生不同于第一代流动人口的变化,但在整体上仍延续了前者的特点而未发生从循环流动向在城镇定居的根本性转变。同时,两代流动人口在城镇的定居意愿除受到户籍制度的限制外,还受到流动人口在以劳动密集型行业为主导的次级劳动市场高度集中、就业不稳定、社会保障水平低、在城市的生存能力有限等状况的制约。这些结论对制定符合流动人口实际的相关政策具有重要启示。     

快速城市化背景下广州五眼桥涌地区河涌环境演化研究——基于人类活动变迁的微观视角

在河口三角洲地区,河流是与人类活动关系最为密切的自然元素。本研究选取位于珠江三角洲核心区的广州市五眼桥涌地区为典型案例,通过实地调查、标图和深度访谈,结合相关的统计资料和历史文献,解析了快速城市化背景下珠江三角洲河涌环境的演化过程及动力机制,并分析了人-河关系的演进。研究发现案例地的河涌环境在地貌形态和水环境方面都发生了剧烈变化;城市河涌环境演化的主要动力来自于社会生产层面和个人生活层面的人类活动变迁。案例地人与河涌关系的演进经历了亲密和谐、对立隔离、重塑改善三个阶段。     

变动中的家与地方:一个关联性的研究综述

家与地方的关系是地方性研究中的关键性命题。人本主义地理学认为地方根植是家的根本属性,批判地理学则从社会建构的角度阐释家与地方的动态关联。在全球化和灾害影响下,家与地方的联结方式不断变动,呈现出异常丰富的多样性。本文从理论脉络入手,对全球化进程中因绅士化引起的家的置换,无家可归与家在他乡,以及离散者的漂移之家等现象进行了分析;并从灾民自我调适行为和灾后重建计划的实施方面,讨论了灾害影响下家的重构与认同问题。相关学科和国际研究在这一领域的快速发展,将为国内社会文化地理学对家的探索创造良好的机遇。     

A cultural proxy for drought: ritual burning in the Iron age of Southern Africa

In traditional Bantu-speaking societies in southern Africa, drought is caused by breaches in rules of pollution. At times of severe drought (3–5 consecutive seasons), rainmakers ascend special hills to perform special rituals. The archaeological signature of this unique activity forms a cultural proxy for drought. New research shows that burnt daga structures also correlate with high δ¹⁵N values for small stock. Burnt structures thus form a new component to the proxy. According to the ethnography, farmers implicated in the cause burnt their grain bins, and sometimes houses, as a ritual of cleansing. The dating of these structures provides a revised climatic sequence for the plateau portion of the summer rainfall region. Among other new results, there was a drought at the end of the Mapungubwe period (ca. AD 1300). At about AD 1650, droughts associated with the arrival of maize caused people to stop growing it as food for a while.     

Atlantic salmon, archaeology and climate change in New England

A paucity of archaeological remains of Atlantic salmon in Northeast North America has been cited as evidence that the species may have been present in the region only during and after the Little Ice Age (ca. 1450–1850 AD), one of coldest periods of the Holocene. However, significant problems of preservation, recovery and identification remain. Here, improved methods of identification use vertebra structure to distinguish salmon from trout, and strontium/calcium ratios to differentiate sea-run from landlocked salmon. In addition to the Little Ice Age, Atlantic salmon is identified in tightly dated contexts at 7000–6500 and 3500–3000 calendar years BP, during climate periods that were comparatively warm and wet.