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61.
John A. Alwin 《The Professional geographer》1992,44(4):369-376
The ascendance of the Pacific Rim is an indisputable global happening. North American geography, a logical leader in the study of this high profile phenomenon, has lagged behind other disciplines in Rim-focused research. This article argues in favor of a heightened Rim awareness, surveys recent publications, suggests promising Pacific Rim research directions, and proposes how the Association of American Geographers can help promote Rim studies. 相似文献
62.
Joe Weber 《The Professional geographer》2019,71(2):239-252
In the twenty-first century, there are three American Wests, which cut across cultural, political, physical, and economic boundaries. Parts of the West are booming, building homes, and adding population; others are legally off limits to such development; and much of the West has been bypassed by such development and growth. These are called here the Booming West, Protected West, and Bypassed West. Maps of climate, political boundaries, ethnic and racial identities, or presidential voting patterns do not match these three Wests. Each West has a different relationship to the others and might see them as threats or opportunities, and each West can be expected to grow in different areas at the expense of other Wests. The boundaries between the three Wests could be important locations; sharp transitions can exist between Wests, perhaps nowhere more so than where a fast growing metro area abuts a national park or forest boundary. Finally, the effects of climate change cut across the three Wests and have different implications for their future. Continued population growth will further emphasize the boundaries between each of the three Wests and raise the stakes for their control. 相似文献
63.
Seasonal and inter-annual relationships between vegetation and climate in central New Mexico, USA 总被引:8,自引:0,他引:8
Jeremy L. Weiss David S. Gutzler Julia E. Allred Coonrod Clifford N. Dahm 《Journal of Arid Environments》2004,57(4):507-534
Linear correlations between seasonal and inter-annual measures of meteorological variables and normalized difference vegetation index (NDVI) are calculated at six nearby yet distinct vegetation communities in semi-arid New Mexico, USA Monsoon season (June–September) precipitation shows considerable positive correlation with NDVI values from the contemporaneous summer, following spring, and following summer. Non-monsoon precipitation (October–May), temperature, and wind display both positive and negative correlations with NDVI values. These meteorological variables influence NDVI variability at different seasons and time lags. Thus vegetation responds to short-term climate variability in complex ways and serves as a source of memory for the climate system. 相似文献
64.
《The Professional geographer》2013,65(3):261-266
Because medical geography is a dynamic and developing area of thought, a number of conceptual and empirical problems are, as yet, relatively unexplored. This essay constitutes an attempt to delimit these problems, which include the application of geographical analysis to ascertaining disease causation, the prediction of future disease patterns and disease diffusion, and evaluation of the importance of maximizing geographical access to health care facilities. 相似文献
65.
Clyde Woods 《The Professional geographer》2002,54(1):62-66
Predictions of the death of impoverished and actively marginalized racial and ethnic communities are premature. Many core African American societies have been devastated by the state, capital, and cultural policies of the last two decades. Simultaneously, geography and the other social sciences have been mobilized in order to prevent a fuller understanding of these communities and of the need for social equity. The further development of several approaches is required to open geography and the other disciplines up for community‐building, rather than community destruction. The incorporation of research in the following areas holds out the promise of revitalizing both: human rights; the ethnic movements underlying restructuring; the social construction of regions; the reproduction of social power; building ethnic alliance; and indigenous knowledge systems. 相似文献
66.
67.
《The Journal of geography》2012,111(5):187-193
Abstract A three-year institute called “The Lodge Pole River Project” was designed to change educator perceptions of American Indian historical geography and encourage the creation of balanced and culturally sensitive American Indian K-12 curriculum. This project offered unique opportunities to assess a geography institute's impact upon teacher knowledge and perceptions towards Native people and pedagogical approaches to teaching about American Indians and their landscapes. The assessment suggests that three weeks of field work, archival research, and curriculum writing increased participant knowledge of American Indian history and culture, solidified sympathetic perceptions and attitudes towards Native people, and strengthened the ability of educators to offer different interpretations of American Indian geography and history to their students. 相似文献
68.
69.
沉积型铜矿作为重要的铜矿类型之一,一直是工业界找矿和开发的重点。中非铜(-钴)矿带是世界著名的巨型沉积型铜矿带之一。赞比亚谦比希铜矿是我国企业在非洲矿业开发的成功典范项目,其矿体分布和产状严格受新元古代加丹加超群的下罗恩组地层控制,含矿岩石为下罗恩组下部的含矿泥质页岩、砂岩。本文通过对谦比希铜矿的矿床地质特征、成矿地质背景、成岩-成矿规律的详细研究,揭示了其含矿地层和矿体明显受古沉积环境、基底形态的控制;成岩-成矿过程经历了海侵-海退过程,沉积古地理环境为滨浅海蒸发背景。赞比亚铜带省和西北省拥有巨大的资源和找矿潜力,未来必将吸引更多投资。 相似文献
70.