全文获取类型
收费全文 | 7073篇 |
免费 | 336篇 |
国内免费 | 302篇 |
专业分类
测绘学 | 1055篇 |
大气科学 | 393篇 |
地球物理 | 313篇 |
地质学 | 777篇 |
海洋学 | 56篇 |
天文学 | 2篇 |
综合类 | 504篇 |
自然地理 | 4611篇 |
出版年
2024年 | 23篇 |
2023年 | 48篇 |
2022年 | 338篇 |
2021年 | 333篇 |
2020年 | 364篇 |
2019年 | 364篇 |
2018年 | 296篇 |
2017年 | 370篇 |
2016年 | 340篇 |
2015年 | 311篇 |
2014年 | 293篇 |
2013年 | 674篇 |
2012年 | 436篇 |
2011年 | 375篇 |
2010年 | 232篇 |
2009年 | 297篇 |
2008年 | 318篇 |
2007年 | 361篇 |
2006年 | 287篇 |
2005年 | 257篇 |
2004年 | 241篇 |
2003年 | 197篇 |
2002年 | 163篇 |
2001年 | 106篇 |
2000年 | 131篇 |
1999年 | 105篇 |
1998年 | 77篇 |
1997年 | 62篇 |
1996年 | 43篇 |
1995年 | 38篇 |
1994年 | 38篇 |
1993年 | 30篇 |
1992年 | 25篇 |
1991年 | 20篇 |
1990年 | 13篇 |
1989年 | 11篇 |
1988年 | 25篇 |
1987年 | 16篇 |
1986年 | 18篇 |
1985年 | 9篇 |
1984年 | 10篇 |
1983年 | 13篇 |
1982年 | 3篇 |
排序方式: 共有7711条查询结果,搜索用时 671 毫秒
81.
Placing geographies of public health 总被引:6,自引:0,他引:6
Following the move to a 'post–medical' geography, a large amount of research has come to focus on public health issues. This paper explores these current geographies of public health and argues for the development of a more critical perspective. In particular, it draws on commentary that has emerged out of debates that have taken place within a body of literature usually identified as the critical 'new' public health. The paper goes on to argue that such scholarship offers crucial insights for the production of a critical geography of public health. 相似文献
82.
In 1879, the RGS started courses in practical surveying based on the methods used by navigators. Subsequently, RGS courses, increasingly under the influence of former members of the Survey of India, changed in character. At the same time as the nature of appropriate surveying was being negotiated within the RGS, the debate over the academic nature of geography also took shape. The development of the 'new' geography reflected the conflicts within the RGS Council over the meaning of scientific geography. 相似文献
83.
Laura Pulido 《The Professional geographer》2002,54(1):42-49
Utilizing a partially autobiographical format, this article considers the practice and study of race within geography. I argue that the overwhelmingly white composition of the discipline has very real implications for both individual experiences and our intellectual production and disciplinary culture. I explore these issues by drawing on my own experiences as a Chicana within geography, and by examining the extent to which one area of research, environmental justice, has engaged questions of race and the consequences of that engagement. I conclude with some general remarks on what it might take to significantly diversify geography. 相似文献
84.
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
85.
Betsy Donald 《The Professional geographer》2002,54(2):190-203
This article presents an analysis of the relationship between urban governance restructuring, and global, national, and local action through a case study of the Toronto city‐region. The Toronto city‐region recently underwent a massive reorganization of its governance structures, functions, and jurisdictional boundaries. This restructuring raises questions about why these changes occurred at this particular juncture in the region's history. Why did the city that had always been known in the academic and political discourse as the “city that works” stop “working”? What global and national forces might have accounted for such a radical restructuring? And what did local action contribute? These questions are explored in both historical and contemporary contexts by drawing on insights from regulation theory, urban regime theory, and an analysis of Canada's changing fiscal federalism. This approach informs the role that institutions — regardless of their origin or territorial scope — play in sustaining a local accumulation system, and how this “local” accumulation grounds a national regulatory mode and regime of accumulation. The approach also explores the relationship between regime and regulation theories in the context of policy formation and institution building. The study concludes that the current policy set is incapable of resolving the region's crisis tendencies. Notwithstanding external forces, the current policy set is not inevitable. Globalization does not predetermine all spatial‐economic outcomes. 相似文献
86.
This article examines the locational patterns of population and employment and the resultant changes in urban form in the Halifax–Dartmouth region between 1970 and 1996. The article employs the univariate and bivariate K function to measure spatial dependence or clustering within and between the classes of residential and commercial land parcels. The results of the K function estimates suggest that residential land parcels cluster together, commercial land parcels cluster together, and residential and commercial land parcels have become more clustered over time. Evidence of clustering provides insight into the changing urban form of the region and possible multinucleation. 相似文献
87.
JEFFREY S. SMITH 《Geographical review》2002,92(3):432-451
ABSTRACT. Continued rural‐to‐urban migration has helped motivate cultural geographers, long suspected of having a rural bias, to include urban areas in their purview. Patterns of gender, class, ethnicity, and commercialization have proved to be fertile subjects for research, but the elastic links between rural and urban places are not yet well understood. Hispanos, despite intense feelings of loyalty to their rural villages, moved en masse to cities in the 1940s. By the 1950s a majority of Hispanos were living in regional urban centers of the upper Rio Grande country, where wages were higher and employment was secure. This Hispano experience is a crucible for examining how urbanites' attachment to rural places is manifested in various cultural expressions brought from country to city: painted murals, burial preferences, popular music, and irrigation ditches. Understanding threads of rural culture that have been incorporated into the urban fabric in turn leads to clearer comprehension of the emotional attachment that urbanites have for rural areas and a better appreciation of the complexity of the urban cultural environment. 相似文献
88.
基于空间信息技术的城市应急救援联动系统研究 总被引:26,自引:0,他引:26
该文分析国内外城市现代救援体系及其发展趋势,对基于统一的空间信息基础设施平台分布式城市应急救援联动系统(体系结构与系统实现)的关键技术进行研究,以成都市城市应急救援联动系统为例,探讨了城市应急救援联动系统的构成、功能、业务流程、系统平台、用户界面等。 相似文献
89.
东莞城市化过程中若干问题研究 总被引:10,自引:3,他引:10
黄靖 《地理与地理信息科学》2003,19(5):73-76
改革开放以来,东莞市积极吸纳海外资本与技术,通过“三来一补”企业的快速发展,带动了非农产业和小城镇的迅速发展。然而,受我国分散的工业化和农村城市化政策体制的影响,在快速城市化过程中也暴露出很多值得关注的问题。该文基于实地考察与问卷访谈,重点分析了土地利用效率低、外来人口集中以及基础设施建设与城市经济发展不相协调等问题,并提出协调城市化发展的对策。 相似文献
90.