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61.
该文旨在描述十年来我国"信息社会的地理学"发展的大体轮廓。依据主题词选择、领域选择、期刊选择和论文选择的标准,以国内地理期刊上发表的96篇论文为研究对象,并按期刊、主题词、研究方法、研究区域进行分类分析,进而从7大领域综述我国"信息社会的地理学"的研究内容。研究发现,十年来我国"信息社会的地理学"呈现出研究不断深化、领域和主要内容全面化、研究方法和研究区域多样化的特点,据此探讨其研究趋势以引导未来的研究。  相似文献   
62.
随着地理信息系统(GIS)技术的不断完善,利用GIS的空间数据(矢量化数据)与化探测量数据(定量数据)的有机结合,建立基于地理信息系统(GIS)空间数据库对已有的海量化探数据进行统一管理,并开发基于GIS空间信息技术的地球化学异常查询系统,是化探相关地质信息提取的有效途径。  相似文献   
63.
2020年中国科学院地理科学与资源研究所建所80周年。回眸80年,从1940年重庆北碚成立的中国地理研究所,到1953年重新组建的中国科学院地理研究所和1956年成立的中国科学院自然资源综合考察委员会,再到1999年地理研究所和自然资源综合考察委员会整合形成现在的地理科学与资源研究所,几经变迁,历经三代人努力,研究所始终如一,求真务实,开拓进取,推动着地理科学与资源科学的创新发展,为国家建设发展和生态文明进步做出了重要贡献。适逢建所80周年,本文回顾地理资源所发展历程,总结取得的重要科研成果,并展望未来发展。  相似文献   
64.
张玉  张道军 《地理学报》2022,77(11):2757-2772
地形作为影响植被覆盖的重要因素,对植被恢复评价以及生态修复规划意义重大。地形位作为测度地形因子综合效应的指标,具有单一地形因子难以比拟的优势。然而,现有地形位指数算法以整个研究区为参照,未考虑空间异质性,难以反映植被生长的局部环境特征。基于地理学第三定律对地理环境相似的强调,融合“空间位置邻近”和“环境特征相似”,对传统地形位模型进行改进:(1)引入局部窗口算法,以突出局部地形特征;(2)在不同生境因子组合下测算地形位指数,以排除环境差异对地形位作用的干扰。案例研究表明,新模型有效提升了地形位指数对植被覆盖水平的解释力度;当考虑生境因子组合,且采用最优窗口时,局部窗口地形位指数与植被覆盖度之间的相关性最高。此外,通过观察不同生境组合下的地形位指数发现,在高热少水阴坡和高热少水阳坡条件下,植被覆盖度与局部窗口地形位指数具有更高相关性;可见,越是水资源相对匮乏区域,植被覆盖对局部窗口地形位的响应越敏感。本文有望为植被恢复评价与规划提供新的指标。  相似文献   
65.
基于DEM的江西潦河流域河网信息提取方法   总被引:2,自引:0,他引:2  
介绍了GIS环境下数字高程模型(DEM)的预处理、水流方向确定、汇流累积量确定、河网生成,以及其他水文信息提取的原理和方法;基于DEM对江西潦河流域进行河网提取和流域边界的划分,并对试验结果进行了比较和分析。结果表明,利用GIS空间分析功能,基于DEM提取的潦河中上游数字河网与实际河网基本吻合;DEM精度和汇流能力阈值对提取的河网精度有着明显的影响,对于中小流域的潦河来说,1:50000精度的DEM和汇流能力为1000的阈值可满足实际应用的要求;基于DEM和ArcGIS提取的数字化河网,其水文要素(如坡度等)可直接作为流域预报模型参数,不仅大大提高了模型的效率,而且还可以方便地利用遥感等数据源,数据获取快速且成本低。从宏观效果上看,利用现有的GIS软件,基于DEM数据提取河网、流域范围等水文信息,从提取效率和结果的精度来说都是切实可行的;从微观上讲,已有的算法还无法确保计算结果与某些特殊地形区域(如平坦区域)的实际河网一致。  相似文献   
66.
American pragmatism: Towards a geographical introduction   总被引:1,自引:0,他引:1  
Trevor J. Barnes 《Geoforum》2008,39(4):1542-1554
The purposes of the paper are to provide a historical and thematic review of some of the variants of American philosophical pragmatism (old and new), and to point to its potential relevance for geography. The paper is divided into three sections. The first, discusses the origins of American pragmatism focussing on four figures: John Dewey, Oliver Wendell Holmes, William James, and Charles Sanders Peirce. Following the argument of Louis Menand (2001) in The Metaphysical Club, I will suggest that pragmatism took on its peculiar American character as a response to the deep fissures and wounds caused by that country’s Civil War. That war produced a loss of faith, undermining notions of universal progress and absolute truth. Pragmatism was the reaction. The second section brings pragmatism to the present, by focussing on three connected contemporary American pragmatists: Richard Rorty, Richard Bernstein, and Richard Shusterman. The hallmark of their work, and which justifies treating them as a group, is a willingness to stretch pragmatism: first, by making linkages with other anti-foundational, practice-based philosophical traditions, especially those within Continental European philosophy, and which had been shut out of Anglo-American philosophy after the Second World War by the rise of analytic philosophy; and second, by applying pragmatist ideas to issues like the body and popular culture to which it had never been applied. Finally, in the conclusion the paper reflects on the prospects of tethering pragmatism to the work of human geographers. Given the anti-architectonic impulses of pragmatism, such a project cannot simply be one of holus-bolus transferring pragmatism to geography. A different approach is needed, and which is schematically outlined and briefly illustrated using the idea of place.  相似文献   
67.
This paper assesses the key contributions made by Piers Blaikie to the field of political ecology. Those contributions relate to the way in which this scholar has sought to dismantle barriers to thought by: (1) integrating the insights of political economy with those from environmental science, (2) opening up theoretical space in political ecology by engaging fruitfully with post-structural critiques, (3) moving beyond a narrow area-studies and development studies focus, and (4) helping to internationalise the research field beyond its core American base. The paper also highlights ambiguity in the role played by Blaikie in political ecology, as stances that he has taken in his work have provoked wider debate over the field’s purpose and coherence. Ensuing tensions over theory and practice as well as single versus multiple truths persist yet, pace Blaikie and others (e.g. Robbins), a robust political ecology is nonetheless able to consider what people ‘do’ from a healthy diversity of theoretical positions. The multiple contributions of Piers Blaikie underpin a reputation for having produced a pioneering body of work that has inspired scholars across theoretical, empirical and disciplinary boundaries, thereby ensuring that his will be a reputation that is interpreted and re-interpreted for many years to come.  相似文献   
68.
This paper explores the relationship between interdisciplinary studies and research and researchers’ positionalities, both within and beyond geography. The profound degree to which researchers’ assumptions, expectations and attitudes (which in turn are affected by their personal backgrounds, training, location, etc.) influences the very notion of interdisciplinarity, and what it involves and consists of, is often neither noted nor appreciated. This paper will illustrate, particularly through personal examples, how positionality is part of the circuit of knowledge production, informing academic research, employment and publishing to no small extent. The boundaries of interdisciplinary research are shown to be under constant negotiation, still far from mutual understanding or consensus, a fact which explains the often uneasy identification and negotiation of oneself as an interdisciplinary scholar. The paper concludes by making recommendations at individual and institutional level on how to overcome some of the constraints imposed by researchers’ positionalities to the promotion of interdisciplinary research.  相似文献   
69.
Set in the broader context of increasing urban precarity and displacement of the urban poor and working classes, this paper examines the social and collective significance of housing precarity and eviction as it is experienced by Latin American, immigrant families living in informal hotels in Buenos Aires, Argentina. I analyze the internal dynamics, interactions and relationships between residents of informal hotels, the housing organization CIBA (Coordinadora de Inquilinos de Buenos Aires), which fights for housing rights for the poor in the city, and the city government sponsored housing subsidy. I argue that urban precarity severely limits opportunities for collective organization around better housing and political and social change. I show that despite CIBA’s objectives to transform social and political conditions for the poor in Buenos Aires, residents often operate under other assumptions and goals, in part because of the temporal and spatial restraints under which they live. Instead, residents of informal hotels work with CIBA in order to secure access to basic, urgent needs. These different expectations and understandings produce contentious relationships of dependence and subordination that are exacerbated by the eviction process and the city government housing subsidy.  相似文献   
70.
变化发展中的中国人文与经济地理学   总被引:9,自引:4,他引:5  
陆大道 《地理科学》2017,37(5):641-650
学科方向与研究领域的确定是学科发展的灵魂。人文与经济地理学是研究领域乃至研究方向均处于变化中的学科,重新认识人文与经济地理学的研究领域与学科方向至关重要。通过梳理几十年来中国人文与经济地理学主要分支学科发展阶段,总结了人文与经济地理学对转型发展社会背景的响应,一方面要坚持学科交叉的性质,以“人-地系统”为理论方向和走理论与实践相结合的道路,另一方面人文与经济地理学者要以新的心态、新的视野,来思考未来发展的重点领域、发展理念以及理论与方法的创新。对长期以来学科涉及到的主要问题,战略性、咨询性、预测性甚至总结经验性(成果表现为发展学科理论)的工作将会逐渐增加,重要性将逐渐显现。阐述了信息化与社会空间经济组织、区域经济新格局与新型城镇化等重要研究领域的发展变化趋势,就“国际热点”与“国际前沿”、理论研究及理论与实践的关系等重要问题的研究理念以提出了新设想,并提出将“人文地理学”改称为“人文与经济地理学”的建议。  相似文献   
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