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991.
992.
一、我国建立城市土地储备制度的背景
1992年底到1993年初,我国大城市中出现第一次房地产开发热潮,城市中大量土地闲置,资金周转不灵,耕地数量大幅度下降。为了实现中国经济成功软着陆,经济运行趋向平稳,1996年8月,在上海建立了我国第一家土地储备机构——上海土地发展中心,从此拉开了我国土地储备制度实施的序幕。2001年4月3日《国务院关于加强国有土地资产管理的通知》明确要求,“有条件的地方政府试行收购储备制度”。自此,土地储备工作在全国迅速展开。 相似文献
993.
近日,由河南省地矿局水文二队和地勘一院等单位编写的河南省地方标准《PVC—U管成井技术规范》,顺利通过专家评审,经河南省质量技术监督局批准,已于2009年11月23日起正式颁布施行。 相似文献
994.
湖北省应对气候变化的方案分析与政策含义 总被引:2,自引:0,他引:2
应对全球气候变化需要地方采取应对措施。根据湖北省"十一五"规划纲要提出的目标和《中国应对气候变化国家方案》提出的具体任务,通过分析论证气候变化的脆弱性以及经济发展对能源需求的增长,提出了湖北省适应和减缓气候变化的应对方案,并分析了湖北省温室气体排放的3种情景。湖北省作为国家能源和经济格局的组成部分,需要协同国家战略及布局,不仅为湖北省自身,也要为国家的低碳发展做出贡献。 相似文献
995.
996.
Notes of Numerical Simulation of Summer Rainfall in China with a Regional Climate Model REMO 总被引:1,自引:0,他引:1
Regional climate models are major tools for regional climate simulation and their output are mostly used for climate impact studies. Notes are reported from a series of numerical simulations of summer rainfall in China with a regional climate model. Domain sizes and running modes are major foci. The results reveal that the model in forecast mode driven by "perfect" boundaries could reasonably represent the inter-annual differences: heavy rainfall along the Yangtze River in 1998 and dry conditions in 1997. Model simulation in climate mode differs to a greater extent from observation than that in forecast mode. This may be due to the fact that in climate mode it departs further from the driving fields and relies more on internal model dynamical processes. A smaller domain in climate mode outperforms a larger one. Further development of model parameterizations including dynamic vegetation are encouraged in future studies. 相似文献
997.
The hydrologic changes and the impact of these changes constitute a fundamental global-warmingrelated concern. Faced with threats to human life and natural ecosystems, such as droughts, floods, and soil erosion, water resource planners must increasingly make future risk assessments. Though hydrological predictions associated with the global climate change are already being performed, mainly through the use of GCMs, coarse spatial resolutions and uncertain physical processes limit the representation of terrestrial water/energy interactions and the variability in such systems as the Asian monsoon. Despite numerous studies, the regional responses of hydrologic changes resulting from climate change remains inconclusive. In this paper, an attempt at dynamical downsealing of future hydrologic projection under global climate change in Asia is addressed. The authors conducted present and future Asian regional climate simulations which were nested in the results of Atmospheric General Circulation Model (AGCM) experiments. The regional climate model could capture the general simulated features of the AGCM. Also, some regional phenomena such as orographic precipitation, which did not appear in the outcome of the AGCM simulation, were successfully produced. Under global warming, the increase of water vapor associated with the warmed air temperature was projected. It was projected to bring more abundant water vapor to the southern portions of India and the Bay of Bengal, and to enhance precipitation especially over the mountainous regions, the western part of India and the southern edge of the Tibetan Plateau. As a result of the changes in the synoptic flow patterns and precipitation under global warming, the increases of annual mean precipitation and surface runoff were projected in many regions of Asia. However, both the positive and negative changes of seasonal surface runoff were projected in some regions which will increase the flood risk and cause a mismatch between water demand and water availability in the agricul 相似文献
998.
结合Trimble Geomatics Office1.6软件,介绍一种GPS网地方独立坐标系坐标转换的简便方法.通过具体工程算例,证明这种方法的计算结果是可行的. 相似文献
999.
1000.