全文获取类型
收费全文 | 2224篇 |
免费 | 39篇 |
国内免费 | 45篇 |
专业分类
测绘学 | 172篇 |
大气科学 | 43篇 |
地球物理 | 27篇 |
地质学 | 216篇 |
海洋学 | 48篇 |
天文学 | 1篇 |
综合类 | 38篇 |
自然地理 | 1763篇 |
出版年
2023年 | 15篇 |
2022年 | 80篇 |
2021年 | 65篇 |
2020年 | 84篇 |
2019年 | 90篇 |
2018年 | 95篇 |
2017年 | 101篇 |
2016年 | 95篇 |
2015年 | 68篇 |
2014年 | 70篇 |
2013年 | 239篇 |
2012年 | 189篇 |
2011年 | 80篇 |
2010年 | 45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2308条查询结果,搜索用时 15 毫秒
191.
192.
本文从开展第一次全国地理国情普查工作出发,探讨了总体培训、内业培训、外业培训、成果统计分析培训、质量检查培训等几个关键节点的培训。地理国情普查是一项基础性的工作,成果数据的质量,关系到国土、规划、建设、水利、交通、环保、公安、园林、防灾减灾等政府各个部门对数据应用的效果和科学决策的准确性,做好几个关键节点的培训工作,有利于普查数据质量的提高。对顺利完成地理国情普查任务具有非常重要的作用。 相似文献
193.
孙常建 《测绘与空间地理信息》2014,(10):146-147
随着信息化的发展以及测绘高新技术和先进测绘设备的广泛应用,在第一次全国地理国情普查工作正在有序开展且部分完成的情况下,地理国情监测的条件日益成熟。本文主要选择政府和有关部门关注的相关方面,结合地理国情的要素,从6个方面进行监测研究。 相似文献
194.
《The Professional geographer》1991,43(3):362-363
ATLAS*GIS , Version 1.0. ATLAS*MapMaker , Version 4.0. FIVFIV-SINSIN , Release 9.0. Geo-EAS , Version 1.2.1. Evan Englund Sim City , Version 1.0 Statistix , Version 3.1. 相似文献
195.
Feminism and Social Theory in Geography: An Introduction* 总被引:1,自引:0,他引:1
This essay introduces a collection of articles based on papers developed for a Fall 2004 speaker series at the University of Minnesota. The articles address the continued relevance of feminist geography and the unique contributions of feminist perspectives in various areas of geographic research. They also point out directions for needed future research. This introduction briefly reviews the successes of and remaining challenges to feminist geography, including material inequities yet unresolved in two other (nonresearch) “places” of academic life: teaching and the workplace. We discuss the ongoing underrepresentation of women and people of color on our faculties and in the front of classrooms. 相似文献
196.
197.
198.
Bernice Kotey 《The Australian geographer》2015,46(2):183-201
Varied distribution of resources, populations and Indigenous people result in significant socio-economic differences among statistical local areas (SLAs) in remote Australia. These differences indicate that the experience of change at the height of the resources boom will differ among SLAs in the region. Using hierarchical cluster analysis with Ward's minimum variance method, four socio-economic clusters were identified among the 197 SLAs in the region. The first was the most disadvantaged, with limited resources and human capital and the highest percentage of Indigenous people. The other three clusters improved in sequence, with the fourth having the most resources with the highest employment rate and income but least number of Indigenous people. Multivariate analysis of variance with main and interaction effects showed changes in demographics, industry structure, human capital and income over the period of investigation for the region as a whole and differences in the extent of these changes among the clusters. Policy interventions in the region are suggested for each group to match its specific needs. 相似文献
199.
Social science literature suggests that neighborhood-based visual cues have substantive effects on individuals' littering behaviors. Experimental research on this topic typically alters the appearance of a selected public location, and then monitors changes in littering due to these tightly controlled esthetic changes. The general finding is that littering occurs more frequently in relatively disorderly settings. The current paper extends this work by testing whether or not the same finding holds in more “real life” situations, wherein the operative visual cues come directly from the environment rather than through experimental manipulation. Specifically, the paper empirically identifies two study sites that serve similar functions in their urban system, but that differ markedly in contextual features. At the first site (#1), visual cues include liquor stores, vacant structures, and a noisy interstate highway. Notable visual cues at site #2 are scenic vistas, well-maintained housing, and greenspaces. When the same quasi-natural littering experiment was conducted at both locations, the littering rate was significantly higher at site #1 compared to site #2 (after controlling for individual-level demographic attributes). This result adds value to the applied geography community, as it confirms that spatially-based attributes do influence individual behaviors in a manner consistent with controlled, comparatively acontextual experimental findings. Additionally, the results implicate policy strategies that might be useful for counteracting antisocial urban behavior. 相似文献
200.
基于人地关系的旅游地理学理论透视与学术创新 总被引:13,自引:6,他引:7
针对旅游地理学理论研究比较薄弱和研究内容相对泛化的现状,提出将旅游人地关系作为旅游地理学研究的核心,阐述了旅游人地关系的理论内涵,认为旅游地理学是研究地球表层人类旅游活动与地理环境关系并服务于人类生活和社会经济发展的一门科学,其研究对象是"旅游地域系统"。基于人地关系的理论视角,按照旅游地理学理论体系化和科学化的发展要求,充分考虑旅游地理学旅游性、区域性、综合性和应用性的学科属性,初步构建了以旅游活动系统和地理环境系统为基础,以人地关系理论为核心,融合相关学科理论的旅游地理学理论框架。论文还梳理了旅游地理学的基本研究内容、主要科学问题和重要研究方法,强调应大力倡导地理学科学精神,改变低水平应用导向和过于偏重技术导向的研究现状,切实运用旅游地理学研究和解决国家与地方旅游发展中的重要现实问题,并在此基础上强化理论导向的思想型研究,将深刻揭示旅游人地关系地域系统的基本特征、功能结构、时空演化、基本规律、动力机制和调控途径作为旅游地理学研究的重点,通过学科特色创新、研究范式创新、理论成果创新、研究方法创新和应用价值创新,推动旅游地理学理论研究的深化、学术水平的提高和学科体系的完善,促进现代旅游地理学的本土化和中国旅游地理研究的国际化。 相似文献