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大城市边缘区中小城市可持续发展战略探讨——以广州增城市为例 总被引：7，自引：1，他引：6
大城市边缘区中小城市的发展具有其特殊性,特殊的区位和特殊的功能定位决定它必须与大城市协调发展。当前"撤县设区"、"撤市设区"发展大城市,加快城市化进程成为我国当今城市发展的一个主导趋势。行政区划调整使城市总体发展战略发生调整,其边缘区的发展条件、发展背景发生了变化,其发展战略也相应要调整。本文通过揭示新的背景下广州市边缘区增城市的城市产业发展、空间发展、生态保护、基础设施布局等方面的战略取向,探讨了大城市边缘区可持续发展的道路。 相似文献
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《The Professional geographer》2013,65(1):10-17
This essay questions the effectiveness of nuclear winter modeling as a means of impacting nuclear policy and changing public attitudes about nuclear issues. In nuclear winter modeling, humanistic concern over the possibility of global environmental destruction is cloaked in the ostensibly neutral language of science. Nuclear winter modeling attempts to apply rational argument to an issue that is rooted instead in human affect and morality. The implications of this misappropriation are discussed in terms of the dehumanizing nature of the images conjured up by nuclear winter, its attention to the effects of nuclear weapons rather than deeper structural problems, and its political ambiguity as a function of unresolvable uncertainty in model results. 相似文献
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《The Journal of geography》2012,111(6):326-332
Abstract This exercise has been used successfully by more than a thousand students is an introductory college course, and it probably could be equally successful with high school students. Census tract data are used in a simulated research project. Quality of housing in the dependent variable (whose distribution we wish to “explain”), with owner-occupancy and age of housing as independent (or “explanatory”) variables. The distribution of the three variables is compared visually (by maps) and statistically (by scattergrams). A regression line is placed on the better scattergram, and residual values are mapped to provide a basis for the formulation of better working hypotheses. 相似文献
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《The Journal of geography》2012,111(5):289-294
Abstract Field work is an important but often neglected facet of a sound undergraduate geography training program. Literature, both geographic and nongeographic, offers very few practical suggestions or realistic approaches that can be utilized in some way by geography departments organizing undergraduate field programs. This article eliminates a hiatus in the literature for it analyzes field work, explores proven methods of undergraduate field training, and describes the importance of the selection of a study area and field camp site. It stresses the value of careful organization, and problems of topic selection and field data generation, and provides a detailed model, a proven schedule, concomitantly with a sound approach to field work. The two-week field course with deferred papers is an immediate, realistic, and inexpensive solution to the problem of undergraduate field work. 相似文献
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《The Journal of geography》2012,111(2):18-28
Abstract In Colonial America soil was commonly evaluated by the vegetation it produced: heavy timber and lush undergrowth indicated fertile soil—a thin covering of trees, barrenness. Settlers in the “Genesee Country” of New York developed new understandings about the relationship between soil quality and vegetation. Here was encountered a thinly-timbered landscape which they called “oak openings.” Although at first suspicious of the fertility of this thinly-timbered land, it was found to produce fine wheat crops. Thus, a new concept of landscape appraisal entered the culture of these people — thinly-timbered land may be fertile. By the time the agricultural frontier reached Inner Michigan, the old concepts about soil fertility and vegetation had been largely overturned. There, it was the open land (oak openings and prairie) that attracted the immigrants, not the heavy timber. The typical settlement sequence in Inner Michigan was to take up the prairies first, the oak openings next, and the heavy timber last. 相似文献