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依据2015年6月发布的2014年度国际期刊引证报告,将SCI收录的46种地理学期刊按学科分为5大类,对各学科期刊的影响因子、总被引频次等相关引证指标进行分析,并对各专业地理学期刊2009-2014年间的学术影响力增长情况进行总结。同时,整理国际地理学期刊的年刊文量、出版国别、出版周期和出版公司等期刊出版资料,对国际地理学期刊的学科类型分布、学术影响指标、编辑出版状况之间的相关影响特征进行探讨。 相似文献
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Darrell S. Kaufman 《Journal of Paleolimnology》2009,41(1):1-6
The 14 papers in this Special Issue of the Journal of Paleolimnology report new records of Holocene climate and environmental change from Arctic lakes, with emphasis on the last 2000 years.
The study sites span the high latitudes of North America and extend into northwestern Europe. The studies rely on multiple
proxy indicators to reconstruct past climate, including: varve thicknesses, chironomid, diatom, and pollen assemblages, biogenic-silica
and organic-matter content, oxygen-isotope ratios in diatoms, and the frequency of lake-ice-rafted aggregates. These proxies
primarily document changes in past summer temperatures, the main control on physical and biological processes in lakes at
high latitudes. The records will be integrated into a larger network of paleoclimate sites to investigate the spatial and
temporal variability of climate change and to compare the paleoclimate inferences with the output of general circulation models.
This is the Introduction to a series of fourteen papers published as a special issue dedicated to reconstructing late Holocene
climate change from Arctic lake sediments. The special issue is a contribution to the International Polar Year and was edited
by Darrell Kaufman. 相似文献
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Curdin Derungs Tanja Samardžić 《International journal of geographical information science》2018,32(5):856-873
Data-driven GIScience shows a growing interest in making spatial information from large text data. In this paper, we quantify and thus evaluate the relation between text frequency and properties of the outer-text, geographic setting by comparing text frequencies of mountain names to the respective geomorphometric characteristics. We focus on some 2000 unique mountain names that appear some 50,000 times in a large compilation of texts on Swiss alpine history. The results on the full data set suggest only a weak relation: only 5–10% of the variation in the text frequency being explained by the respective geomorphometric characteristics. However, an analysis of multiple scales allows us to identify a Simpson’s Paradox. What appears to be ‘noise’ in the analysis of all mountains in the whole of Switzerland shows significant local signals. Small spatial extents, found all over Switzerland, can show considerably strong correlations between text frequency and spatial prominence, with up to 90% of the total variation explained. We argue that our findings have practical implications for data-driven GIScience. Retrieving meaningful spatial information from text might only be possible if the spatial scale of analysis reflects the spatial scale described in the input text documents. 相似文献
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By studying landscape form and patterns, we can study processes at multiple scales and determine how collectively those processes inform us about function(s). Integrating landscape ecology from a biogeographical perspective with geographic information science (GIScience) practices offers new ways to study how landscapes change over time and space, including how they can be measured, analyzed, and modeled for management needs. This article presents methodologies and selected results of analyzing spatial patterns from field data across multiple scales by examining standing dead tree (snag) processes across wildfire‐disturbed landscapes in Arizona. Our primary motivation was to illustrate a particular type of work benefiting from the coalescing of landscape ecology and GIScience, functioning at the methodological and practical overlap of these two contributing fields. Our management goals were to (1) describe spatial patterns and characteristics of snags in pairs of burned and unburned ponderosa pine forests of Arizona in four recent (within the past ten years) wildfires, (2) document bird response to wildfires by combining landscape ecology and GIScience methods, and (3) link these patterns to snag monitoring plots and cavity‐nesting bird use to predict the probability of snag use by birds and cavity nesters based on snag characteristics (snag use model). The methods and results demonstrate how integration of landscape ecology with both GIS and GIScience improves the ways to study landscapes and land management issues, in this case offering guidelines for retention of snags that provide habitat for wildlife. 相似文献
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We conducted a review and analysis of the references cited in articles published (1995–2004) in the journal Geomorphology and also solicited comments from the authors of the most-cited works on their major influences. Of the 31,696 unique works cited in the journal, only 22 were referenced at least 20 times, with the vast majority (92%) cited only once or twice. We divided the citations into the 10 most-cited books (i.e., complete volumes) and 10 most-cited papers (i.e., journal articles, book chapters, reports). A total of 23 different researchers were responsible for the 20 works, with one (Wolman) being an author or co-author of a quarter of them. Seven of the ten most-cited papers were based on work in the USGS in the mid-twentieth century, indicating a particularly fruitful time of geomorphic research and a particularly important cohort of scientists. Based on our citation analysis and author commentaries, we suggest that classic works in geomorphology are most likely to be those that provide useful knowledge and those that incorporate interdisciplinary perspectives. 相似文献
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利用2004-2018年Web of Science数据库中无人机生态遥感监测领域的相关文献,通过文献计量统计和可视化方法对发文量、作者、国家、机构、期刊和关键词等进行分析,从文献计量视角评价了国际无人机生态遥感监测研究的发展历程和进展。结果表明：检索到的381篇该领域的文献来自全球62个国家、646所机构的1 598位学者,2013年以来相关文献数量呈高速增长趋势。在该领域研究中,美国、中国和西班牙的综合科研力量最强;美国农业部、西班牙国家科学研究委员会和中国科学院的发文量全球领先;虽然全球有较多学者从事该领域研究,但国际学者间的交流和合作相对较少。Remote Sensing、International Journal of Remote Sensing和Precision Agriculture是该领域文献的主要期刊载体。除检索词“Unmanned Aerial Vehicle”“Drone”外,“Precision agriculture”“Vegetation indices”“Forest inventory”等是出现频次较高的关键词,表明无人机遥感在精准农业、植被调查等方面的应用是研究重点。为了促进无人机生态遥感监测研究,建议国内外学者间加强交流合作,增强技术创新并拓宽在生态监测领域的应用范围。 相似文献
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2011-2015年《地理学报（英文版）》引证指标分析 总被引：1，自引：1，他引：0
依据美国科技信息研究所公布的《期刊引证报告》、Web of Science数据库、Springer数据、来稿刊稿统计等资料,检索并分析了2011-2015年《地理学报（英文版）》的稿件来源、刊稿量、网络下载量、影响因子、被引频次、被引期刊、施引期刊和高被引论文等主要载文和引证指标。2011-2015年间,该刊国际来稿比例由26.5%增加到47.9%,影响因子由2011年的0.832提高到2015年的1.923。通过对该刊近5年发展状况的全面分析,为期刊未来发展方向提供科学决策依据,为我国地理学期刊质量提升提供参考。 相似文献
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基于CNKI的1982-2014年《地理研究》载文情况统计分析 总被引：1，自引：0，他引：1
基于中国知网（CNKI）的“中国学术期刊网络出版总库”、中国科学引文数据库（CSCD）等,对1982-2014年《地理研究》的载文情况进行了总体回顾和客观评价,主要内容包括33年间所发表的学术论文的年际变化、第一作者及核心作者群、作者所属研究机构、各类资金资助情况、论文关键词及被引用情况等几个方面。研究表明：① 《地理研究》的载文量呈现波动增长趋势,具有明显的阶段性变化特征;② 《地理研究》拥有庞大的作者数量,但以第一作者发表3 篇及以上论文的核心作者占第一作者的9.5%;③ 第一作者所属研究机构在区域分布上存在明显的地域集中性,主要集中在中东部地区;④ 国家级基金是地理学研究的主要项目资助类型;⑤ 在热点内容、区域（尺度）和方法等方面体现了学科特点;⑥ 《地理研究》在地理学及其相关研究领域的学术影响力显著提高。研究结果客观地展示了《地理研究》33年来的办刊历程及学术影响,同时在一定程度上揭示出地理学相关领域的研究热点和趋势,可为《地理研究》今后发展以及中国地理学相关研究提供科学参考。 相似文献
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2013 年7 月至8 月,作者开展了首次“中国地理信息科学（GISci） 领域科研人员心目中的本领域国际学术期刊等级”问卷调查,对回收的37 份问卷进行分析后得出了中国（含港澳台地区） GISci 领域科研人员心目中的本领域55 种国际学术期刊排名情况。比较了本次调查结果与国际上此前公布的唯一一次、但无中国学者参与的GISci 领域国际学术期刊等级问卷调查结果间的异同。与SCI/SSCI 期刊影响因子相比照,发现目前SCI/SSCI 检索期刊总体上能较好地覆盖GISci 领域的国际学术期刊,但SCI/SSCI 期刊影响因子尚不能较好体现中国学者心目中本领域期刊的等级。本次问卷调查结果的公布能够促进GISci 领域的中国青年科研人员及研究生对本领域学术期刊的了解,避免目前常常仅以影响因子来评价本领域国际学术期刊所产生的偏颇。 相似文献
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跨国科研合作是“一带一路”倡议的重要内容,而相互信任则是科研合作的重要基础。由于“一带一路”沿线各国的经济规模和社会文化环境差异都较大,文化邻近对于增进国家间相互信任,进而推动跨国科研合作就具有重要价值。考虑到以往研究主要以合著科研论文数量来测度国家间的科研合作水平,可能放大了经济规模、人口规模、发文总量等的影响,本研究基于2007—2020年间“一带一路”沿线66国间的合著科研论文数量,以改进的Salton指数表征的科研论文合作强度测度国家间科研合作水平,采用社会网络分析、回归分析和GIS空间分析等方法,探究沿线各国在2007—2013年和2014—2020年两个时间段内科研合作强度的演变过程,并以此为基础,着重考察文化邻近的可能影响。研究表明：① 综合分析论文合作规模和合作强度,能够识别出建立在语言、宗教等文化要素邻近之上的两国间真正的强合作关系,宗教邻近有助于增进互信,语言邻近有助于增进相互理解,方便了科研合作过程中的交流和沟通。② 2007年以来,“一带一路”沿线国家间的科研合作空间格局已由“两核九中心”转变为“一核八中心”,中国成为网络中唯一的核心,与其他国家的加权度中心性差距不断扩大。③ 国家发文量、国家间经济发展差距、政治关系、地理距离、语言邻近和宗教邻近等均对科研合作强度有显著影响,其中文化（语言和宗教）邻近的影响最为显著,但也趋于减弱,语言邻近的影响要强于宗教邻近,并且只有语言相同或属于同一语支能够显著促进国家间的科研合作。中国作为“一带一路”倡议的发起国,与沿线大多数国家并不具有天然的文化邻近,在一定程度上阻碍了科研合作网络的建设。未来,有必要更加重视跨文化交流和沟通,以增进科研合作领域的信任关系,推动科研合作取得实效。 相似文献
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地理计算是地理信息科学的核心内容之一, 主要研究地理信息科学的方法学问题, 内容 包括建模、算法、计算体系和一般方法学问题。本文介绍了地理计算的五个前沿问题: (1)地学数据 挖掘从地理学问题出发, 对各种数据作地理学的模型处理和结果计算以发现地理知识; (2)空间运 筹在地理学中的应用日益广泛, 它的算法更加简单严密、精度也更高; (3)多自主体系统模拟已经 成为地理学科学研究中除归纳和演绎之外的第三种重要研究方法; (4) 离散空间的定性计算是进 行地理空间计算的必要基础; (5)本体论的发展是地理信息科学乃至整个地理学发展的需要。 相似文献
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近20年国际地缘政治学的研究进展 总被引：6，自引：2，他引：4
地缘政治学以地理的视角探讨国际关系,极大地影响了世界政治发展历程。全球化、信息化的浪潮中,地缘政治在国际舞台复兴,成为全球格局解读和政策制定的重要学科。科学认识和总结国际地缘政治学最新发展是推进学科发展的前提。以Web of Science 中地缘政治的学术论文为依据,借助于科学计量工具,系统回顾了1996-2015 年地缘政治学的发展脉络,揭示了地缘政治学发展的基本规律,剖析了国际地缘政治学的重点研究领域和研究转向。从文献计量统计分析来看,近年来在政治地理及地理学相关期刊发表的论文数量不断增加;地缘政治全球高引用文章重点关注了国家与边境的地缘政治诠释、批判性地缘政治学、情感地缘政治、女性主义地缘政治等主题。在上述分析的基础上,重点回顾了边境与领土空间、全球化下的地缘文化与经济、热点区域与中国模式、资源冲突与生态政治、价值情感与文化的地缘政治学分支领域研究趋势。通过文献系统回顾发现,国际地缘政治学的研究出现了如下趋势：后冷战时代中,国家、边境等仍为地缘政治的核心研究方向;地缘政治在进一步强调地理重要性的同时,也出现了向批判性地缘政治,尤其是从人本主义（情感地缘政治、女性地缘政治）对传统地缘政治进行反思的转变。最后提出,中国地缘政治界应强化地理空间与尺度的重要性,采用叙述、
过程等多元方法,并融入人本主义的思想,来进一步丰富地缘政治研究的理论与实践。 相似文献
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《The Journal of geography》2012,111(5):205-213
Students in U.S. geography programs face particular challenges that may discourage them from taking advanced GIScience courses and considering geospatial careers. This article provides a preliminary discussion of the development, delivery, and evaluation of a University of Colorado Colorado Springs sophomore-level, required geography course designed to address this concern. The course, Digital Earth (DE), introduces students to the principles, concepts, and applications of major geographic information technologies (GITs) early in their academic careers. The success of DE is evaluated by examining the extent to which the course excited students about GIScience and motivated them to take higher level elective geospatial courses. Results suggest that DE generates considerable student interest in GIScience, prepares students reasonably well for elective courses, and greatly inspires them to seek a geospatial career. 相似文献
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Song Gao Krzysztof Janowicz Daniel R. Montello Yingjie Hu Jiue-An Yang Grant McKenzie 《International journal of geographical information science》2017,31(6):1245-1271
Cognitive regions and places are notoriously difficult to represent in geographic information science and systems. The exact delineation of cognitive regions is challenging insofar as borders are vague, membership within the regions varies non-monotonically, and raters cannot be assumed to assess membership consistently and homogeneously. In a study published in this journal in 2014, researchers devised a novel grid-based task in which participants rated the membership of individual cells in a given region and contrasted this approach to a standard boundary-drawing task. Specifically, the authors assessed the vague cognitive regions of Northern California and Southern California. The boundary between these cognitive regions was found to have variable width, and region membership peaked not at the most northern or southern cells but at substantially less extreme latitudes. The authors thus concluded that region membership is about attitude, not just latitude. In the present work, we reproduce this study by approaching it from a computational fourth-paradigm perspective, i.e., by the synthesis of high volumes of heterogeneous data from various sources. We compare the regions which we identify to those from the human-participants study of 2014, identifying differences and commonalities. Our results show a significant positive correlation to those in the original study. Beyond the extracted regions themselves, we compare and contrast the empirical and analytical approaches of these two methods, one a conventional human-participants study and the other an application of increasingly popular data-synthesis-driven research methods in GIScience. 相似文献
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Oliver T. Coomes Tim Moore Jaclyn Paterson Sébastien Breau Nancy A. Ross Nigel Roulet 《The Professional geographer》2013,65(3):433-450
A common problem faced by geography departments, particularly during times of fiscal compression and mounting pressure for accountability, is how to compare themselves and their faculty with others. The recent revolution in bibliometrics provides a growing volume of data that can be used in benchmarking exercises. In this article, we assess the production and citation of journal articles and books by tenure-track and tenured faculty in selected U.S. and Canadian geography departments (n = 17) according to a set of readily derived and transparent performance indicators derived from publicly available data. Scopus was used to assess article production and citation; Google Scholar was used for book citation. Results point to significant heterogeneity in department characteristics, productivity, and citation of published work. The number of publications, citations, and h-Index scores among scholars in the sample (n = 369) is related strongly to academic age and subfield of enquiry (i.e., physical or human geography) but not—despite apparently marked differences in output and citations—to gender. 相似文献