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71.
72.
Reviews     
《The Geographical journal》2002,168(4):380-382
Books reviewed:
Bjørn Lomborg, The Skeptical Environmentalist: Measuring the real state of the world
B. Dalal–Clayton and D. Dent, Knowledge of the Land: Land resources information and its use in rural development
Krishna B. Ghimrie, The Native Tourist: Mass tourism within developing countries  相似文献   
73.
Geographers and other social scientists investigating the impact of economic and demographic restructuring have tended to focus on urban metropolitan areas. There has been much less exploration of the local impacts of such change in largely nonmetropolitan locales. Many of these nonmetropolitan regions, however, are some of the fastest growing in the U.S. This article addresses this issue by examining, at the county level, economic and population trends in the state of Idaho. Generally recognized for its agricultural outputs (such as potatoes), Idaho experienced a population growth rate of 18.1 percent during the 1990s, making it one of the fastest growing states in the U.S. However, population growth and the associated changes in the local economy were unevenly distributed across the state. This article develops a typology of growth and change, indicating patterns of growth related to two predominant trends: high–tech footloose capital investment and amenity– and tourism–related residential development. Implications of this analysis for future research are discussed.  相似文献   
74.
以土地利用的导向功能为基础,将南昌市1995、2005和2015三期20种土地利用类型划分为生态生产空间、生产生态空间、生态空间和生活生产空间。利用空间复杂性指数、空间脆弱性指数和空间稳定性指数3个因子构建冲突模型,借鉴倒“U”型模型,将空间冲突分为4类:稳定可控、基本可控、基本失控和严重失控,在冲突级别的基础上利用优化产业结构、生态系统修复等措施,建立10个亚功能区,优化土地资源,缓解空间冲突,实现可持续发展。研究结果表明:①1995—2015年中南昌市三生空间格局以生产生态空间为主,其次是生态空间、生态生产空间以及生活生产空间,生活生产空间所占比例在上升,其余均在减少,呈现“一升三降”特点;②1995—2015年南昌市三生空间空间冲突愈演愈烈,严重失控单元持续增长,但2005—2015年的增长速度较1995—2005年稍慢,南昌市三生空间冲突失控态势严峻;③不同空间类型冲突存在较大差异,均以可控级别为主,其中失控级别占比由大到小:生活生产空间?生产生态空间?生态生产空间?生态空间;④利用10个亚功能区优化南昌市70%以上的区域,其中以城镇用地等为主的两个亚功能区,70%以上属于允许建设区,以滩地、湖泊、林地等为主亚功能区65%以上属于禁止建设区,符合土地利用总体规划。  相似文献   
75.
朱瑛  薛桂芳  李金蓉 《极地研究》2011,23(4):318-327
自《南极条约》1961年生效以来,南极地区一直处于以《南极条约》为核心的南极条约体系的约束之下.1982年《联合国海洋法公约》(以下简称《公约》)建立了大陆架制度,要求沿海国应在批准《公约》生效10年内完成200海里以外大陆架外部界限的划定①.1994年《公约》生效后,澳大利亚、挪威、阿根廷和英国在提交各国200海里以...  相似文献   
76.
Acting as efficient earth-movers, soldiers can be viewed as significant geomorphological drivers of landscape change when replaced in the recent debates on Anthropocene Geomorphology. ‘Polemoforms’, generated by military activities, correspond with a set of human-made landforms of various sizes and geometries. They are particularly common on the World War One battlefield of Verdun (France) which ranks among the largest battles of attrition along the Western Front. The artillery bombardments and building of defensive positions in that battle significantly altered the landscape, resulting in thousands of shell craters, dugouts, and gun positions that have altered both the meso and microtopography. This paper proposes an innovative methodology to make an exhaustive inventory of these small-scale conflict-induced landforms (excluding linear features such as trenches) using a digital terrain model (DTM) acquired by airborne LiDAR on the whole battlefield. Morphometric analysis was conducted using Kohonen's self-organizing maps (SOMs) and hierarchical agglomerative clustering (HAC) in order to quantify and classify the high number of war landforms. This combined approach allowed for mapping more than one million landforms which can be classified into eight different shapes including shell craters and various soldier-made landforms (i.e. shelters, gun positions, etc.). Detection quality evaluation using field observations revealed the algorithm successfully classified 93% of shell craters and 74% of anthropologically constructed landforms. Finally, the iconographic database and map series produced will help archaeologists and foresters to better manage the historic site of Verdun, today covered by a large forest of ~10 000 ha. © 2019 John Wiley & Sons, Ltd.  相似文献   
77.
缅北局势及其对中缅经济走廊建设的影响   总被引:1,自引:0,他引:1  
通过系统梳理缅北局势发展历程,剖析冲突各主体的诉求,分析缅北局势对中缅经济走廊建设的具体影响,并从第三方介入构建缅军与少数民族地方武装之间双方认可的《全国全面停火协定》的视角提出应对的机制和措施。结果显示:目前,缅北局势呈现出冲突规模随时间推移持续上升的趋势,冲突从果敢爆发后向南北方向扩散并高度集中于中间区域;受地缘环境复杂和大国利益交汇影响,缅北冲突在短时间内无法消除;缅军与少数民族地方武装之间的冲突在短期内无法消除,冲突各方缺乏平等对话的平台与和谈共识,持续性冲突将是缅北的常态。缅北局势影响了中缅经济走廊建设,致使中缅经济走廊的投资项目无法有效推进,阻滞“人字形”走廊的通畅,并有损中国政府及企业在缅形象。针对缅北局势的影响,中国及其他国际组织等应认真调研和精确把握双方诉求和缅甸的局势,积极协助缅甸冲突双方、为主要政党搭建对话平台、构建平等的协商机制、促进和谈有效推进。经济走廊建设既要注重硬环境的建设,更要加强软环境的投资等,这些将是保证中缅经济走廊建设有效推进的关键。因此,以缅甸为突破口,在中国周边构建“一带一路”建设的样板,探讨落实倡议的有效路径,总结各类经验。  相似文献   
78.
Despite low numbers for the past century, black bear (Ursus americanus) populations in Alabama appear to be growing. There are often strong emotional reaction and public disagreement toward how wildlife management agencies respond to human-bear encounters. We used data from a mail in survey (n?=?564) distributed to residents of two distinct regions of Alabama to examine the acceptance of five common black bear management strategies in response to specific human-bear encounter scenarios. We applied the second generation Potential for Conflict Index (PCI2) to estimate the potential for social conflict which may arise due to dissenting opinions toward bear management strategies. Potential for conflict varied according to severity and frequency of the bear encounter and severity of management actions and was greater in rural areas. We recommend managers create standardized bear management protocols and a human-bear encounter classification system to maintain consistency and limit negative public reaction to management techniques.  相似文献   
79.
Adding building labels greatly improves the recognizability of buildings and the readability of three-dimensional (3D) city scenes. However, building label placement is much more complex in 3D scenes than in two-dimensional (2D) maps. The annotation effect is influenced by the attributes of the 3D label, building visibility, and the spatial relationship between the building and viewpoint. In this context, automatically generating building labels for 3D scenes during interactions requires highly complex computations. By contrast, evaluating candidate labels and then selecting the suitable label for each building can be effectively implemented. This paper introduces an approach for labeling buildings in 3D scenes based on evaluations of label candidates. The proposed method predefines a candidate label set for each building. These candidates are then evaluated in terms of their attributes and the relationship between the labels and viewpoint at runtime. The best candidate label, or a situational alternative for each building, is then placed in order of comprehensive label priority to avoid annotation conflicts. A series of experiments demonstrate that this method effectively enhances the correlation of labels and buildings, improves interactive efficiency, and realizes a viable global label layout.  相似文献   
80.
ABSTRACT. The article identifies important themes and future research directions for analyzing water and conflict dynamics at the subnational scale in the Indus Basin. A historical overview of water development in the Indus Basin suggests that the water‐security nexus was always a salient theme in the minds of water developers, even in the nineteenth century. Conflicts over contemporary large‐scale water‐development projects in the Indian and Pakistani parts of the Indus Basin are reviewed. Engineers' single‐minded focus on megaprojects, to the neglect of the wider set of values that societies attach to water resources in the eastern and western Indus Basin are largely to blame for continuing low‐grade conflict in the basin. A review of local‐level conflicts over water supply and sanitation in Karachi and the distribution of irrigation water in Pakistani Punjab illustrates the critical role of governance and differential social power relations in accentuating conflict. The article argues against neo‐Malthusian assumptions about the inevitability of conflict over water because of its future absolute scarcity. Instead, the article seeks to demonstrate that, despite evidence suggesting that international armed conflict over water does not exist, the potential for political instability over domestic water distribution and development issues is real. The question of whether conflict at the subnational scale will culminate in violence will depend on how water‐resources institutions in the basin behave.  相似文献   
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