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1.
AMY MILLS 《Geographical review》2005,95(3):441-462
ABSTRACT. Since the foundation of the Turkish Republic in 1923, when the Turkish nation was defined as ethnically Turkish and Muslim, the issue of ethnic minorities has been at the root of a deep insecurity concerning cultural identity and what it means to be Turkish. The movement to “recover” ethnic minority in history and in place is most visible in Istanbul, the city identified as the location of European culture in Turkey and Turkey's most culturally pluralistic city. The movement has gained pace since the formal acceptance of Turkey as a candidate for membership in the European Union and the push for reforms in human rights. It is promoted by a very small cultural and economic elite and works together with gentrification to produce elite spaces in the city, as exemplified by two neighborhoods: Kuzguncuk, a historic minority neighborhood on the Asian shore of the Bosporus; and “French Street,” a new commercial development in Beyoǧlu, on the European side of the city west of the Bosporus. These landscapes articulate a European, cosmopolitan, and multicultural place identity for Istanbul and reflect a particular notion of Turkey as modern and European, providing insight into the contemporary debate in Turkey concerning the tensions embedded at the core of Turkish cultural identity. 相似文献
2.
高星级酒店外籍管理者对广州地方景观的感知与跨文化认同 总被引：3，自引：1，他引：2
全球化是当今世界最重要的特征之一。有关跨国移民对城市景观的感知和跨文化认同研究也得到越来越多的关注。在文献回顾的基础上, 以广州高星级酒店外籍管理者作为研究对象, 通过定性研究进行数据的收集和分析, 构建了外籍管理者对城市地方景观感知和跨文化认同的形成演变机制, 并得出以下结论:① 在职业影响下, 外籍管理者对迁入城市产生了被动的地方认同, 进而形成了被迫同化的跨文化认同模式;② 外籍管理者基于身份构建对城市地方景观进行感知, 对反映“他者”、“我者”和“世界人”身份的景观感知度较高, 反映出他们对故乡和迁入城市的地方认同, 从而产生了同时具有整合和边缘特征的跨文化认同模式;③ 外籍管理者通过迁入城市的地方景观感知而产生地方意义的解读, 基于对迁入城市正面的地方意义解读, 对城市产生了地方认同和整合的跨文化认同模式, 基于对迁入城市负面的地方意义解读, 对城市产生了地方不认同和分隔的跨文化模式。研究结论丰富了城市景观研究和跨文化认同研究的相关理论成果, 并为中国跨国移民政策和国际化城市建设提供了可供借鉴的实践参考。 相似文献
3.
《Urban geography》2013,34(2):174-192
Subsistence gardens were a significant land use in the Columbus, Ohio metropolitan area from 1900 to 1940. Their existence, however, was materially erased from the city and discursively erased from its history after that period. This paper investigates the processes of that erasure, particularly in the American Addition neighborhood of Columbus, concentrating on the articulation of an urban normative that made such land uses appear contrary to "modern" urban development. At the same time, the existence of such practices and landscapes in the city was explained away by a crisis narrative of the garden that helped to support the idea that such practices did not produce "normal" urban spaces. The simultaneous material and discursive colonization of subsistence gardens as "relief" measures during the Great Depression left these landscapes and areas dependent on the City of Columbus, under whose control they were transformed into more "appropriate" cityscapes. 相似文献
4.
Patterns and dynamics of urban forests in relation to land use and development history in Guangzhou City, China 总被引：3，自引：0，他引：3
Trees in cities display a varied pattern that is often moulded by a city's physical fabric and its evolution through time. The town plan expressed in spatial dimension as land use, and in temporal sense as development history, furnishes a framework to evaluate the intricate association between city and trees. Guangzhou city, the premier metropolis of south China, has been established for 2800 years, and has a long history of urban greening and heterogeneous land use. Five urban districts, which represent old, middle-aged and young stages of development and cover the bulk of the city's built-up zones, form the study area. Interpretation of aerial photographs is used as a basis to classify the urban forest into three types, and to design a sampling scheme for studying trees in urban parks, institutional grounds and roadsides. District history has bequeathed a plethora of configurations in terms of buildings, roads and land uses, accompanied by plantable spaces of dissimilar dimensions, geometry and quality. The districts display diverse tree attributes such as frequency, density and species diversity. Young districts, with lower density, more institutional uses and wider roads, present more opportunities for greening. Recent shifts in landscape fashion have introduced a significantly different treescape. A few exceptionally large parks and institutional sites play a pivotal role in the city's tree assets. Parks, roadsides and institutional forests have different tree-stocking rates and species assemblages. Implications for future planting and management of urban trees in different situations, and for the greening of other cities in China, and other developing countries, are explored. 相似文献
5.
Delhi, the worlds' second most populous city, has experienced rapid, planned and unplanned expansion at the cost of its green cover in recent decades. In this study, we use satellite images from 1986, 1999 and 2010 to map changes in urban and green cover, assess the fragmentation of green spaces, and identify the drivers of change. We find that urban patterns of development have shaped the distribution and fragmentation of green spaces, with the city center containing more green spaces with less fragmentation compared to intermediate areas and the peri-urban periphery. Yet, the city core has also experienced the greatest degree of vegetation clearing and fragmentation over time due to infrastructural expansion, while the peri-urban periphery has shown an increase in vegetation and a decrease in fragmentation due to recent compensatory plantation in these peripheral areas. Forests, archaeological sites, and military and academic campuses have played a major role in protecting green cover and limiting fragmentation in the core and intermediate areas of the city. This research helps in advancing our understanding of the pattern–process relationship between urbanization and land cover change/fragmentation in India's largest city. 相似文献
6.
7.
ETM+影像亚像元级城市土地覆盖组分丰度提取——以南京市为例 总被引：2，自引：0，他引：2
城市景观复杂,地物具有强烈的空间异质性,利用中等空间分辨率遥感影像(如ETM )进行城市土地覆盖研究会出现大量混合像元。针对该问题,以南京市为例,通过混合像元分解提取城市土地覆盖组分丰度,进行城市土地覆盖研究,并从各个波段的残差、平均残差、相对误差、均方根误差等方面分析模型误差。利用IKONOS影像对提取的组分丰度图像进行精度验证,发现不同城市土地覆盖组分丰度图像具有一定的可靠性,与城市实际情况吻合。城市土地覆盖组分丰度图像还能作为一种新的数据源用于城市功能分区、城市人口数据空间化和城市环境监测与评估等研究中。 相似文献
8.
《Urban geography》2013,34(2):160-185
Informed by feminist debates about the distinction between public and private in western urban societies, this article examines some urban landscapes created or transformed in recent decades with a view to assessing the extent to which emancipatory conceptions of gender are apparent. Evidence drawn from the city of Edinburgh shows how divisions between public space and private space operate at different scales and take different forms in different neighborhoods. These forms illustrate how gender and class are interwoven in demarcations between and connotations of public and private spaces. In one of the neighborhoods examined, some breaking down of traditional gender connotations of public and private spaces is detected, a process that is closely associated with privileged middle-class lifestyles. 相似文献
9.
《Urban geography》2013,34(7):988-1003
This article argues that urban skateboarding and the laws by which the city is governed must be understood as intertwined. The transformation of skateboarding's most popular practices from the 1970s onward are a product of an ongoing dialectical engagement between young people and the law. When faced with shifting landscapes of property and liability, young skaters have adapted their practices, seeking out new types of terrain. This search has led skateboarding into the public spaces of the city and regimes of urban governance. Contemporary efforts to build public skateparks in cities such as Seattle, Washington are properly contextualized as part of a continuing evolution of skaters' agency in responding to and capitalizing on openings in the legal landscape. By working both within the political system and constructing skateparks outside conventional political avenues, skatepark advocates seek spaces that are free from increasingly restrictive conventional logics of private and public property. 相似文献
10.
Land surface temperature (LST) variability results from diversity in urban surface materials over space and time such that locations with impervious urban cover experience higher temperature and larger temperature variation compared to non-impervious cover. There is growing awareness that warmer temperatures in urban locations negatively impact city residents by increasing heat related death and energy usage during heat waves. However, little previous work investigates the linkages between urban tree cover loss events related to invasive species eradication and urban heat trends. This paper examines the variation in LST using Landsat-5 Thematic Mapper (TM) thermal imagery in Worcester County, Massachusetts where over 30,000 trees were removed since 2008 to eradicate the invasive Asian Longhorned Beetle (ALB), most of which existed in urban residential areas. Throughout the study area a 10% loss in tree canopy cover caused a 0.7 °C increase in LST whereas a 10% increase in sub-canopy impervious surface area exposed due to tree loss caused 1.66 °C increase in LST. The Burncoat and Greendale neighborhoods in northern Worcester experienced a combined 48% tree cover loss from 2008 to 2010 due to ALB eradication and an average relative LST increase of 2.4 °C (range 0.6–4.1 °C). Given that areas with an increase in exposed impervious surface produce greater temperature increases than areas of tree loss, future tree replanting efforts may focus on locations that reduce exposed impervious surfaces. 相似文献
11.
民族文化重构实践中的身份与地方认同——仡佬族祭祖活动案例 总被引：6，自引：3，他引：3
在文化转向思潮的引领下,新文化地理学从注重结果向注重过程转移,更强调地理事象所发生的空间过程及其内化在特殊地域系统中的社会关系。在这一过程中,景观的符号象征意义和表征作用得到重新解读。以民族文化为旅游吸引物的发展背景下,通过对贵州世居民族仡佬族官方祭祖活动的参与式观察和相关群体的深度访谈,发现民族精英为将务川树立为仡佬族族群的中心,重构了"九天天主"及其祭祖仪式和场所,地方意义由此发生了改变‘,小塘石笋’由自然景观变为仡佬族族群的文化中心景观。"仡佬之源"的地方中心性空间策略虽扩大了仡佬族的知名度,提升了地方影响力,但祭祀活动却呈现出精英的"台上"认同与民众"台下"认同的对立。这一分歧的根本原因是当地仡佬族模糊的身份记忆以及仡佬族作为散居族群的文化多元性所致。在仡佬族祭祖的文化实践中,精英通过各种社会关系和权力影响和重构了地方身份认同,而地方的民族身份认同又影响地方意义的重构。文章指出,没有民众的"自下而上"支持,悬置于族群之上的官方主导的文化重构实践具有很大的脆弱性。研究对完善地方感研究中主体性缺失及地方与认同研究中身份认同研究不足具有重要的理论意义。 相似文献
12.
An inventory of trees in Dublin city centre 总被引：2，自引：0，他引：2
Ningal T Mills G Smithwick P 《Irish geography : bulletin of the Geographical Society of Ireland》2010,43(2):161-176
While urban areas are often considered to be comprised chiefly of artificial surfaces, they can contain a substantial portion of green space and a great diversity of natural habitats. These spaces include public parks, private gardens and street trees, all of which can provide valuable environmental services, such as improved air quality. Trees play a particular role in cities as they are often placed along roadsides and in the median strip of busy streets. As such they regulate access to sunshine, restrict airflow, provide shelter, scavenge air pollutants and manage noise at the street level. A tree planting policy can be an important part of a broader environmental strategy aimed at improving the quality of life in urban areas but this requires up-to-date knowledge of the current tree stock, which does not exist for Dublin. This article presents an inventory of trees in Dublin's city centre, defined as the area between the Grand and Royal canals. The results show that there are over 10,000 trees in the study area representing a density of 684 trees km-2 or one tree to approximately every 50 residents of the city centre. The tree canopy extent when in full foliage was nearly 1 km2 in extent or 6% of the study area. A more detailed analysis of those trees planted along streets shows little species variation but clear distinction in the sizes of trees, which is indicative of the age of planting. These data are used to estimate the carbon stored in Dublin's trees. 相似文献
13.
2002-2012年长春市城市功能空间耦合研究 总被引：3，自引：2，他引：1
以长春市多年用地现状图和统计资料为数据源,以ArcGIS和SPSS软件为分析工具,引入静态耦合度和动态耦合度概念,从居住空间视角对长春市城市功能空间耦合的空间差异特征进行了动态研究,分析了城市功能空间耦合的动力机制。研究发现：① 长春市城市空间扩展仍未摆脱圈层扩张的窠臼,居住空间表现出过高的扩张强度,是城市功能空间低耦合近域扩展的重要原因;② 城市功能空间耦合的地域差异显著,核心区动、静态耦合度均高于外围,城市功能空间处于重构期,外围则处于低耦合的快速扩张状态;③选取耦合度指标通过聚类分析方法将中心城区划分为高耦合比较成熟、高耦合趋于成熟、高耦合新兴、低耦合比较稳定、低耦合新兴和低耦合特殊城市功能空间六类。 相似文献
14.
From pastoralism to tourism: The historical impact of changing land use practices in Namaqualand 总被引：1，自引：2，他引：1
We use the concept of ecological revolutions to explain the environmental history of Namaqualand, from the advent of pastoralism 2000 years BP, to colonial settlement in the 18th century and finally to the recent trend of de-agrarianization from the middle of the 20th century. Early traveller's records and census data are used to assess changes in the human population of the region and how this affected wildlife and agricultural practices. Pre-colonial indigenous hunter-gatherer (Bushmen) and pastoralist (Khoekhoen) populations in Namaqualand consisted of probably no more than a few thousand individuals. Over the next three centuries, the general population rose steadily to more than 65,000 people but has fallen in recent years. Wildlife appears not to have been abundant in Namaqualand's pre-colonial landscapes and large springbok ‘treks’ were probably a rare event. The number of domestic livestock in Namaqualand peaked in 1957 largely as a result of an increase in the number of sheep which have fallen steadily since this time. Crop production was absent from Namaqualand's pre-colonial landscapes but increased to cover nearly 30,000 ha in the early 1970s. The area under cultivation has declined by nearly two thirds since this time largely as a result of the large-scale abandonment of wheat farming in marginal environments. We touch on differences between the communal areas and private farms, particularly in terms of their human populations and agricultural impact on the land. Repeat landscape photographs support our main findings which suggest that both rocky, upland habitats and rivers have not been transformed substantially by land use practices in Namaqualand. Instead, sandy pediments have borne the brunt of human impacts in the region. Finally, we highlight the beginning of a new ecological revolution in Namaqualand due to changes in the global and national political economy. 相似文献
15.
始于1980年代的环境公平研究近年来重点转向环境资源，尤其是公园绿地在不同族群和不同收入人群中的空间分布。经过对国内外文献的梳理，从绿地空间环境公平研究主题、绿地公平性影响因素及其测度指标和方法进行了系统综述。分析发现：1）国内外关于绿地空间环境公平的研究主要集中在近十年，呈现稳步增长的态势。总体上从环境公平视角来关注城市绿地空间的研究仍不多，案例绝大多数来自发达国家的城市，更多集中在美国；2）研究主题集中在可进入性与环境公平、绿地空间改造与环境绅士化、绿地使用中的文化公平与环境公平问题以及绿地环境公平感知与地方依恋四个方面；3）城市绿地公平性的测度最常用的是可达性、服务面积等绿地供给性指标，近年越来越多研究开始使用绿地供给与使用者需求的综合测度指标。最后，基于中国快速城市化和快速工业化带来日益紧张的土地利用冲突与经济发展压力，再加上中国特殊的人口、环境特征与文化背景，中国城市普遍面临着对绿地空间需求的日益增长，未来应特别重视城市绿地空间的环境公平问题。 相似文献
16.
基于随机森林模型的“生产-生活-生态”空间识别及时空演变分析——以郑州市为例 总被引：1，自引：0，他引：1
基于2007年和2017年郑州市POI数据,采用随机森林模型和样方比例法识别其城市内部的“生产-生活-生态”空间,并利用核密度等方法分析研究区“生产-生活-生态”空间的时空演变格局。结果表明：① 随机森林作为新兴的机器学习算法,能够识别“生产-生活-生态”空间且具有较高的精度。② 郑州市“生产-生活-生态”空间分布格局与城市功能分区相匹配,生产空间集聚分布在产业集聚区,生活空间在城市中心城区内呈面状分布,生态空间整体呈点状分布。③ 随着郑州市城镇化建设和基础设施的完善,10年间郑州市“生产-生活-生态”空间的空间分布格局更加合理,生产空间向产业集聚区集聚,生活空间逐渐分散,生态空间分布更加均衡。基于POI数据,利用随机森林模型对城市“生产-生活-生态”空间的识别方法更加有效,识别结果更加精准,能够在更小的尺度上为国土空间规划提供数据与方法支撑。 相似文献
17.
政治生态学是西方人文政治地理研究人与自然/环境互动的辩证关系的核心领域。城市政治生态学作为政治生态学的衍生分支同样经历了二十年快速的发展,这一领域尚未获得中国人文地理学界的系统关注。本文对西方文献中城市政治生态学的理论发展、研究议题以及近期前沿的学术争论和理论拓展进行了系统梳理与探讨。政治生态学分析方法批判和克服了技术专家治国论、新马尔萨斯主义、增长的极限等非政治视角的环境生态解释。理论溯源于新马克思主义城市地理学的城市政治生态学,继承了政治生态学的政治视角,但同时对政治生态学和城市研究两个领域中的自然/社会的二元对立提出了批判,以社会-生态混合体为理论出发点,打破并超越了城市-自然的对立和二元划分,通过研究自然的生产、循环与新陈代谢,将城市概念化为动态变化的社会-生态混合体,并揭露了城市环境的生产和社会-生态演化过程本质上是一个政治过程,突出强调了社会-生态混合体演化变迁过程的政治经济学、政治过程、权力关系的分析对于理解不平等的城市环境的核心作用。近5年来,城市政治生态学研究在后结构主义理论启发下扩展了经典马克思主义城市政治生态学,拓展了理论溯源,丰富了对城市环境和生态的解释,并产生了一系列围绕方法论上的城市主义、星球城市化、多地点方法论等的前沿学术批判与争论。 相似文献
18.
西安城市扩张及其驱动力分析 总被引：79，自引：6，他引：73
随着人口的增长与经济的发展,尤其我国西部城市在西部大开发的背景下,大中城市的扩张十分明显,深刻地影响城市周边的生态环境。如何快速准确地获取城市扩张信息,并分析其驱动力机制,对于指导城市规划,优化西部生态环境与可持续发展都具有十分重要的意义。作者分别采用了监督分类法和归一化裸露指数 (NDBI) 法提取了西安市的城市边界信息,并对二者进行对比分析,认为监督分类法提取的城市边界信息较为准确。在此基础上通过对相关统计资料的分析,认为西安市城区快速扩张与西部大开发以来西安市固定资产投资额的大幅增加以及经济的快速发展有密切的关系,此外人口的增加、交通等基础设施的发展也是重要的驱动因素。 相似文献
19.
Riparian corridors have the potential to function as thermal refuges, moderating extremes of local temperature variation. However, although demonstrated at individual sites, and over short periods, the consistency of this effect at wider temporal and spatial scales is poorly understood. The aim of this study is to assess the temperature differences between riparian corridors and adjacent non-riparian habitats and to explore the influence of environmental characteristics on these differences. Air temperature was monitored hourly at 20 paired locations (riparian and non-riparian) for two consecutive years. Urban index and canopy cover were characterised by calculating the percentage of impervious surface area and tree canopy cover within a 100 m radius from the centre of each sampling site. Canopy cover reduced summer thermal stresses in both urban and rural areas whereas high urban index tended to increase the daily thermal indices. Rivers had a significant mitigating effect on the urban riparian thermal condition, particularly in extreme hot weather. Riparian corridors were generally 1 °C cooler than non-riparian locations in summer and could be up to 3 °C cooler at some sites in extreme hot weather. Furthermore, riparian corridors at some sites were warmer than non-riparian locations in winter. These findings suggest that the proximity of rivers can modify riparian thermal environments, potentially reducing the heat stress of riparian corridors across landscapes. 相似文献
20.
《The Journal of geography》2012,111(4):154-165
Abstract Conventional geographical approaches to the city tend to place the study of urban form and urban space squarely within the political-economic and cultural branches of geography. Geographic pedagogy has tended to assume, therefore, that nature is absent from the city or exists only as a backdrop or stage on which urban economic and cultural activities take place. In contrast, there has been a recent groundswell of interest—originating in places as diverse as environmental activism, environmental history, landscape architecture, and environmental education—in reinterpreting the city as a space intimately connected with nature. This article examines the possibilities for integrating this rethinking of the relationship between city and nature into undergraduate education. Specifically, it outlines the rationale, objectives, and design of a course on urban ecology and examines the benefits and challenges of doing urban ecology as part of geographic education. 相似文献