共查询到20条相似文献，搜索用时 31 毫秒
1.
《The Professional geographer》2013,65(3):543-552
Geographic regions all have some degree of uncertainty, though this is seldom represented on their maps. Uncertainty of the Great Plains boundary is shown here by comparing 50 previously published maps of the region. These maps were found in a variety of sources, from classic 1930s geographic works to current regional studies on the Internet. By examining this diverse collection, a distinction can be seen between those maps using primarily physical criteria to define the region and those using cultural characteristics, or a combination of these two characteristics. This distinction is supported by trends in boundary shape, size, and even the map's date of publication. The Great Plains is shown as a complex region, subject to the interpretations of individual cartographers, and can be better understood by considering all points of view rather than any single boundary line. 相似文献
2.
Geographic regions all have some degree of uncertainty, though this is seldom represented on their maps. Uncertainty of the Great Plains boundary is shown here by comparing 50 previously published maps of the region. These maps were found in a variety of sources, from classic 1930s geographic works to current regional studies on the Internet. By examining this diverse collection, a distinction can be seen between those maps using primarily physical criteria to define the region and those using cultural characteristics, or a combination of these two characteristics. This distinction is supported by trends in boundary shape, size, and even the map's date of publication. The Great Plains is shown as a complex region, subject to the interpretations of individual cartographers, and can be better understood by considering all points of view rather than any single boundary line. 相似文献
3.
Emmanuel John M. Carranza 《Natural Resources Research》2017,26(4):411-428
According to previous studies, the use of enrichment factors in environmental studies is inconsistent with its original concept and that such indiscriminate use of enrichment factors should be stopped. In this contribution, it is shown through spatial correlation analysis that using enrichment factors is no better than using log-ratios of geochemical data for mapping of deposit-related anomalies. 相似文献
4.
Local governments are responding to top-down policy initiatives from both federal and State governments to reduce emissions, and adapt to any potential impacts of climate change. Although climate change is clearly a global problem, many of the solutions will be implemented at the local level. To explore this issue, the aim of this research was to examine regional variation in climate change response across New South Wales (NSW). To this end, between September 2010 and September 2011, we reviewed publicly available council and regional documentations for all NSW councils. The indicators of response examined were based on the NSW Greenhouse Plan (2005). These were awareness-raising, emissions reduction and adaptation planning. It was found that councils were undertaking many practical projects to fulfil the goals of this plan. As a result, they are abating significant quantities of emissions. Adaptation is progressing through the development of risk-based climate change adaptation plans. Councils are addressing particular areas of management, such as water management, assisted by guidelines which incorporate consideration for climate change as part of best practice. While overall responses to this threat are progressing, a distinct urban bias in action has been observed, due to biases in policy and funding arrangements. 相似文献
5.
Jeffrey J. Cook 《社会与自然资源》2014,27(12):1257-1270
The preproposal stage of the rulemaking process is notoriously understudied, but enormously important in determining regulatory outputs. Recently, Rinfret (2011c) analyzed the U.S. Fish and Wildlife Service (USFWS) rulemaking process and developed a frame analysis model to interpret stakeholder influence during the preproposal stage. Rinfret argues that stakeholders use three frames to influence agency rulemaking, including an expertise, a fiscal feasibility, and an information frame. This article tests this model to determine whether it is applicable to other federal agencies such as the National Park Service (NPS). Through an analysis of stakeholder framing within the 2012 NPS Yellowstone Winter Use Rule, this research confirms that Rinfret's model is indeed applicable to the NPS process. Therefore, this research suggests that this theoretical model examining stakeholder influence is applicable to other public land agencies, and arguably can be applied across the bureaucracy. 相似文献
6.
Matthias Kokorsch Karl Benediktsson 《Norsk geografisk tidsskrift. Norwegian journal of geography》2018,72(2):97-114
The concept of resilience has been used to assess community development and its prospects in natural resource-based localities. The objectives of the article are to evaluate the resilience of two Icelandic coastal communities, and to reflect on the possible shortcomings of the resilience concept for providing policy guidance. Mixed qualitative methods were used, with several weeks of fieldwork in each location. The results showed that the two case communities have had to adjust to a radical change in the fisheries management, with the loss of resource entitlements. Additionally, substantial differences were found in their level of resilience. One community was undergoing a transition towards a non-fisheries-based existence through several innovative new initiatives, while the other was struggling to adjust and seemed to have reached its limits of resilience, as witnessed by continuing outmigration and declining services. A state-sponsored programme to rekindle the local economy has had limited success so far. The authors conclude by identifying some of the limitations of the focus on endogenous strategies in much of the resilience literature, which does not pay much attention to the broader political economy. 相似文献
7.
Postindustrial Manufacturing in a Sunbelt Metropolis: Where Are Factories Located in Phoenix? 总被引：1，自引：0，他引：1
《Urban geography》2013,34(8):898-926
Manufacturing establishments are integral to the spatial structure of fast-growing Sunbelt metropolitan areas, but most concepts and theories of intrametropolitan location were largely developed for an earlier technological era and different spatial contexts. This article investigates the location of nine disaggregated manufacturing sectors in Phoenix, Arizona, showing varying degrees of central core concentration and metropolitan-wide clustering. Distinct sectoral co-location patterns are also evident. We interpret our results as evidence that the intrametropolitan location of postindustrial manufacturing is best understood as a series of spatial distributions with varying concentration, centralization, clustering, and other order-based characteristics. There is little evidence that randomly scattered discrete industrial zones have developed nor that spatial patterns are uniform. Enduring lock-in effects tied to transportation infrastructure are pivotal to understanding the locational distribution of manufacturing industries in metropolitan Phoenix. Results do not support a hypothesis that a positive relationship exists between establishment size and distance from sectoral mean centers. 相似文献
8.
This paper questions the main techniques of mapping in the context of aircraft noise in the vicinity of airports, and compares these techniques in terms of their purpose, benefits and limitations. Then the paper describes a method to summarise radar traces of a given air transport departure or arrival route into a median route and its envelope containing 80% of flights. This makes it possible to map global and easy-to-read maps of current air procedures around airports based on actual pathways flown by the aircraft. It also makes it possible to investigate the impact of change in aeronautical procedures on the actual geography of air routes around airports. Such maps complement noise contour maps and offer a good basis for debating aeronautical procedures at airports whose operations expose the population to noise. 相似文献
9.
Although there have been noticeable improvements in recent years, geography continues to be a predominantly male discipline. The percentage of women receiving PhDs in geography has tracked lower than the U.S. average of female PhDs. Previous studies of women's contribution to geography have focused on personal accounts or on the study of some of the most prominent practitioners, with a few studies using basic data on PhDs awarded and Association of American Geographers membership to determine trends. This article provides a comprehensive overview of doctoral degrees in geography by gender, over time, and across all universities in the United States by examining an alternative database, that of doctoral dissertations. The analysis yields three separate types of results. First, historical and contemporary variations among U.S. universities are examined. Second, data indicate that male and female doctoral students differ in the sex of their advisor. Third, a simple regression model explains some of the discrepancies in the proportion of female doctoral students by department. In sum, this article provides a comprehensive empirical study of the factors that might contribute to the continued disparities in female doctoral students in geography. 相似文献
10.
China announced plans on April 1, 2017 to create Xiong’an New Area, a new economic zone about 110 km southwest of Beijing. The new area of national significance covers the three counties of Xiongxian, Rongcheng and Anxin in Hebei Province, and is home to Baiyangdian, a major wetland in northern China. It will cover around 100 km2 initially (called “Starting Zone”) and will be expanded to 200 km2 in the mid-term and about 2000 km2 in the long term. In this context, it is important to assess the land use pattern for the new area’s planning and development. Based on remote sensing interpretation of Landsat OLI images, we examine the current land use features, the potential for built-up land saving and intensive use, and the spatial variation of arable land quality. The results indicate that the arable lands, built-up lands and wetlands account for around 60%, 20% and 10%, respectively. The potential for rural built-up land saving and intensive use is quite large. The arable land quality and use intensity in Rongcheng and Anxin counties are much better than that of Xiongxian. The pros and cons for three potential options for the Starting Zone are listed and compared. The eastern area of Rongcheng county, to the north of Baiyangdian, is believed to be the most suitable Starting Zone. Policy recommendations for built-up land expansion, farmland saving and flood risk mitigation for Xiong’an New Area are also proposed in this paper. 相似文献
11.
This article investigates the geographies of subprime urbanization, and by extension, the displacement of 2007–08 financial crisis to the Global South. Previous research examined the formative ways that technological innovations enabled mortgages to deterritorialize and circulate on secondary markets. Less is known about how cities with underdeveloped financial systems and housing markets have been impacted. The case of Tangier, Morocco, is used to argue that the geography of the crisis must be understood as a particular mode of urbanization, subprime urbanization, predicated upon the creation and exploitation of housing submarkets into new geographical frontiers. Subprime urbanization emerged in Tangier in response to the historic contradictions of regional disinvestment in northern Morocco. Weak financial inclusion for local low-income homebuyers led State bureaucrats to increasingly use housing policy to encourage European investment into Moroccan property markets, thereby transforming policy away from improving homeownership access and inclusion toward an urban model centered on the logics of international property speculation. 相似文献
12.
Matthys A. Dippenaar 《Natural Resources Research》2012,21(1):137-142
This short review aims to provide some examples where terrestrial earth sciences—including, for this purpose, geology, engineering
geology, soil science, pedology, hydrology, hydrogeology, geography, geomorphology and environmental sciences—do not interact
sufficiently to ensure optimal results. Apart from different terminologies (for instance, “soil”), different specialist fields
claim expertise over certain disciplines or portions of the Earth’s crust without a proper understanding of the influence
of other specialist fields. This severely limits interdisciplinary understanding, and it is recommended that a better understanding
of interdisciplinary definitions is required to ensure a wider audience. Although this is not a technical article in its own
right, this forms part of a study to link vadose zone hydrology for the disciplines as noted earlier, thereby creating hopefully
a platform for easier communication. 相似文献
13.
One of the aims of the recently initiated land fallow policy is to encourage winter wheat abandonment in order to recover the groundwater environment of the North China Plain (NCP); although this also threatens a national secure supply of this crop, as the NCP is the major wheat producing area in China. It is therefore necessary to consider regional wheat reallocation in order to meet the twin challenges of production and water conservation. An evaluation of spatiotemporal changes in wheat area and production across China in recent years may shed light on the regions that have the potential for reallocation; such trends are analyzed in this study using agricultural statistical data. Three over-arching principles are proposed that reallocation must be naturally suitable, economically feasible, and socially acceptable, and together with the result of the spatiotemporal analysis, two continuous areas are recommended as potentially suitable for wheat reallocation—alongside the Huai River and the cold region of northeastern China. We also present strategies to improve wheat yields as well as policies for farmers, aiming to encourage the reallocation of wheat to the regions highlighted in this study. 相似文献
14.
Geoff DeVerteuil 《Urban geography》2013,34(7):1055-1061
This intervention focuses on how national-level rhetoric aimed at impugning “others” has thrived of late, but how concomitantly 1990s-style urban revanchism has faded in cities that were once punitive crucibles against the homeless. Using Los Angeles as case study, I argue that the recent trend has been to grudgingly support the homeless, increasingly via taxpayer initiatives, leading to a potential but stymied post-revanchist city. If the spirit of revanchism remains, it is through the persistent NIMBY opposition to housing the homeless. 相似文献
15.
'Out there'?'In here'? Domesticating critical geography 总被引：1，自引：0，他引：1
Noel Castree 《Area》1999,31(1):81-86
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