全文获取类型
收费全文 | 2230篇 |
免费 | 40篇 |
国内免费 | 46篇 |
专业分类
测绘学 | 174篇 |
大气科学 | 43篇 |
地球物理 | 27篇 |
地质学 | 221篇 |
海洋学 | 49篇 |
天文学 | 1篇 |
综合类 | 38篇 |
自然地理 | 1763篇 |
出版年
2023年 | 17篇 |
2022年 | 81篇 |
2021年 | 65篇 |
2020年 | 84篇 |
2019年 | 90篇 |
2018年 | 95篇 |
2017年 | 102篇 |
2016年 | 96篇 |
2015年 | 68篇 |
2014年 | 72篇 |
2013年 | 239篇 |
2012年 | 189篇 |
2011年 | 80篇 |
2010年 | 46篇 |
2009年 | 75篇 |
2008年 | 67篇 |
2007年 | 88篇 |
2006年 | 90篇 |
2005年 | 74篇 |
2004年 | 79篇 |
2003年 | 66篇 |
2002年 | 59篇 |
2001年 | 34篇 |
2000年 | 52篇 |
1999年 | 52篇 |
1998年 | 44篇 |
1997年 | 22篇 |
1996年 | 17篇 |
1995年 | 21篇 |
1994年 | 22篇 |
1993年 | 12篇 |
1992年 | 23篇 |
1991年 | 11篇 |
1990年 | 7篇 |
1989年 | 9篇 |
1988年 | 16篇 |
1987年 | 10篇 |
1986年 | 15篇 |
1985年 | 8篇 |
1984年 | 7篇 |
1983年 | 10篇 |
1982年 | 2篇 |
排序方式: 共有2316条查询结果,搜索用时 15 毫秒
951.
Rae Rosenberg 《Urban geography》2017,38(1):137-148
Chicago’s gay village of Boystown has long been linked with whiteness, and in the past decade, tensions have flared between neighborhood residents and queer and transgender (trans) youth of color, often homeless, who come to Boystown for the many services provided by its lesbian, gay, bisexual, transgender, and queer (LGBTQ) nonprofit organizations, or queer spaces of care. While scholars have attended to community policing in Boystown through the Take Back Boystown movement, the role of LGBTQ nonprofits has yet to be examined in their role of criminalizing queer and trans youth of color in the neighborhood. Through an autoethnographic approach, this paper explores how several nonprofit organizations in Boystown have adopted policing strategies toward the queer and trans youth of color they serve. I argue that community policing has infiltrated these organizations to further defend and maintain an exclusive gay urban space informed by whiteness, which marks and regulates young, Black masculinities and trans femininities as deviant, untrustworthy, and criminal. Racism diminishes the ability for queer spaces of care to fulfill their mandates of supporting queer and trans youth of color, rendering the neighborhood a space of surveillance and furthering a White gay urban belonging that alienates and criminalizes these youth. 相似文献
952.
地理学本体论:内涵、性质与理论价值 总被引:2,自引:0,他引:2
科学哲学研究表明,本体论问题的探讨对于具体学科的科学哲学研究和理论研究都具有重要意义。本文界定了地理学本体论的内涵,讨论了地理学方法论、本体论和地理学哲学的关系,比较和分析了哲学本体论与地理学本体论之间的联系和区别,阐述了地理学本体论的性质,概括了地理学本体论的理论价值。地理学本体论包括两个层面:地理学家和地理学流派的哲学本体论观念、地理学理论的本体论承诺,地理学家的本体论影响和决定着地理学家的认识论、方法论和价值论选择,而某个地理学理论的本体论承诺则是该理论得以成立的前提和基础。 相似文献
953.
传统节庆、身体与展演空间——基于人文地理学视觉量化方法的研究 总被引:5,自引:1,他引:4
采用人文地理学视觉量化的研究方法,结合照片评定、眼动分析及定性分析对广东汕头澄海区上社村传统节庆活动(其“拖神”活动具有鲜明的身体表达特征)的空间进行了解译。研究发现,在传统节庆活动中,身体的仪式化实践和体验可对特定的节庆时间—空间进行生产和维持,身体成为传统节庆意义生产的最小空间尺度。身体所能感受和分享的节庆情感作用于地方共同感和认同的建构,而持续的身体参与是传统节庆活动得以不断再生产和保持强盛生命力的关键。在具体研究中,照片评定和眼动仪实验等视觉量化方法的使用,通过对地方居民的空间情感体验进行直观而有效的测度,借助眼动轨迹的热点及瞳孔数据,有力地表明在传统节庆的展演空间内外,现场观众和外界“他者”的“凝视”与身体化的感知存在不同,表现出身体的空间差异性。研究对身体地理学内容的拓展和人文地理学新方法的应用都有一定价值。 相似文献
954.
There are legal and moral imperatives to protect biological resources and the ‘traditional knowledge’ associated with them. These imperatives derive from complex legal geographies: international law (such as the Convention on Biological Diversity and the Nagoya Protocol), State and federal laws, Indigenous customary law, codes of ethics and research protocols. This paper reports on a ‘patent landscape’ analysis of patents that refer to Australian plant species for which there is Indigenous Australian knowledge. We have identified several patents of potential new biopiracy concern. The paper highlights the way in which actors can gain private property monopolies over biological resources and associated traditional knowledge, even though there are overlapping sovereign rights and Indigenous rights claims. Regulatory gaps need to be closed nationally to fully govern the diverse human–plant bio-geographies in Australia. Further, Indigenous laws and governance have largely been ignored by these actors. We suggest that the introduction of ‘disclosure of origin’ requirements in patent applications, sui generis Indigenous knowledge protections, the development of biocultural protocols, and a more nationally consistent system for ‘access and benefit-sharing’ are required to ensure more ‘fair and equitable’ use of plants and Indigenous knowledge in/from Australia, and to ensure the recognition of Indigenous rights to knowledge. 相似文献
955.
Kristina Trygg Brita Hermelin 《Geografisk tidskrift / udgivet af Bestyrelsen for Det Kongelige danske geografiske selskab》2017,117(1):11-21
This article is an explorative investigation of a sample of advanced producer service (APS) companies located in Stockholm (the capital and main urban centre of Sweden). The discussion is centred on aspects of work practice and how this is conditioned by space-time constraints. These space-time constraints refer to coupling, authority and capability constraints which are concepts framed in a time-geography approach. Although time-geography is primarily engaged in mapping presence and locations in time-space, its concepts of constraints embrace physical, social and cultural factors. The article presents an empirical in-depth study of project work and work practice among a selection of APS companies. A micro-approach to work practice has been pursued using a multi-method strategy and time-geography methodology including time diaries, interviews and a questionnaire. The experiences among the investigated companies of time-geography constraints make the constant negotiations for the practice of work among these organizations intelligible. To the extent these investigated companies may be considered representative of advanced services more generally, the presence of pressing constraints helps to explain the more general structure of this industry of high labour turnover and rapid company re-structuring processes. 相似文献
956.
Andoni Arenas-Martija Victor Salinas-Silva Leonor Margalef-García Maria Otero-Auristondo 《The Journal of geography》2017,116(2):57-66
This research aims to evaluate the geographical knowledge of nine teachers in the region of Valparaiso, Chile. An interpretive case study was conducted with data collected through classroom observations, interviews, and questionnaires, and these data were then analyzed through triangulation. The findings showed that these teachers, who are the most qualified within the region's context, consider geography to be marginal knowledge in the school curriculum, although they also consider it relevant to the education of their pupils. Both elements provided evidence of the fragility of their geographical knowledge, which fell within a spectrum that combines expert knowledge and lay knowledge. 相似文献
957.
This article examines the implementation and impacts of a program intended to improve research-led teaching in schools. Little consideration is given to the role of research-led teaching in schools; the argument is that this is a consequence of fractures between schools and universities. A program was developed to bring contemporary geographical research of university scholars into schools. Examining this program, the finding is that being exposed to research: improves access to up-to-date knowledge; heightens student enthusiasm; and informs choices students make about their learning. This article calls for bridges to be built between universities and schools upon the nexus of teaching and research. 相似文献
958.
Wendy Harte 《The Journal of geography》2017,116(5):226-236
This study evaluated the efficacy of geospatial technology (GT) learning experiences in two geography curriculum courses to determine their effectiveness for developing preservice teacher confidence and preparing preservice teachers to incorporate GT in their teaching practices. Surveys were used to collect data from preservice teachers at three intervals over one semester. Results indicate preservice teachers' confidence and competencies to successfully integrate GT in their teaching increased over the duration of the study. The findings highlight the value of providing GT learning experiences in geography curriculum courses and contribute to the literature on preparing preservice teachers to incorporate GT in teaching geography. 相似文献
959.
21世纪中国人文地理学研究的国际影响定量分析与挑战 总被引:1,自引:1,他引:0
本文从当代人文地理学的跨学科特点出发,以2000年以来美国科学情报机构156个SSCI人文地理学期刊的10万余篇论文为基础数据,通过文献计量法从期刊的分类、发文总量、高引用率、世界一流学术机构和明星学者的分布、热门期刊和关键词等方面深入分析当前中国人文地理学在国际学术界的地位、发展趋势以及面临的问题和挑战。结果显示:①21世纪以来,中国人文地理学在国际学术界的迅速崛起已经成为不容争议的事实,中国人文地理学者在国际SSCI期刊的发文总量、高引用率、世界一流机构和明星学者等方面都处于领先地位(世界排名第6)。②当前,中西方人文地理的学科发展存在较大差异,中国人文地理学有着很强的“发展主义”和“实证主义”属性,发文期刊多以规划与发展、遥感、景观等领域为主;而西方人文地理学的社会学偏向非常明显,社会公平、制度和文化嵌入性是西方学者关注的重点领域,在经济地理、文化地理、政治地理等主流期刊中占主导地位。③最后,文章呼吁中国人文地理学应加强在创新研究、社会网络、区域治理、社会正义等方面的理论创新以及与西方理论学派的对话。 相似文献
960.
乡村生产空间系统的概念性认知及其研究框架 总被引:8,自引:3,他引:5
中国乡村发展正步入转型的新阶段,乡村生产空间正经历以家庭为单元的土地细碎化经营向多种形式的适度规模化经营转变,呈现出乡村多元主体利益竞合的空间博弈及乡村生产空间资源配置不匹配等新型矛盾。本文将系统论思想引入乡村生产空间,提出“乡村生产空间系统”理念,并从地理学与空间、行为空间和空间行为、“空间的生产”理论和人地关系地域系统学术思想出发厘清了乡村生产空间系统的思想缘起,凝练乡村生产空间系统的核心内涵;并对乡村生产空间系统的学理辨析、演化机制、形成机理、优化调控等基本问题域进行讨论,初步构建乡村生产空间系统的研究框架;进而提出未来研究需重点关注乡村生产空间系统的要素构成及其关系界定、“人”与“地”之间的相互作用机理及人地关系行为机制、探讨多学科融合多方法集成、辅以长时序数据支持的方法体系,旨在为乡村生产空间可持续发展由基础研究走向实践应用提供理论基石。 相似文献