Knowledge Map of International Research on Soil Acidification
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摘要:
目的 全面直观了解近年来全球土壤酸化研究趋势与前沿热点。 方法 以Web of Science数据库为基础,借助VOSviewer和CiteSpace等可视化分析软件,对1991 ~ 2020年发表的土壤酸化文献共7049篇,从发文量、国家、研究机构、作者、高被引论文、期刊和关键词等多个角度进行可视化计量分析。 结果 近30年来国际土壤酸化领域年度发文量呈逐渐上升趋势;中国和美国的发文量远超其他国家,但中国中心性较低;中国科学院发文量和中心度最高,中国科学院大学、瑞典农业大学和中国农业大学等机构也具有较强的科研水平和国际影响力;研究人员独立性较强,核心研究群体之间合作较少;共被引期刊主要有WATER AIR SOIL POLL、PLANT SOIL、SOIL SCI SOC AM J、NATURE和SCIENCE等;热点研究包括氮、铝、沉降、施肥、重金属、森林土壤、气候变化、有机质、植物生长、酸化影响和治理等方面,并呈阶段特征。 结论 研究有利于全面了解近年来国际土壤酸化研究发展历程,为国内酸化研究及应用提供参考。 -
关键词:
- 土壤酸化 /
- Web of Science /
- CiteSpace /
- 文献计量
Abstract:Objective The research trend and frontier hot spots of international soil acidification research in recent years is reviewed. Method The publications based on Web of Science (WoS) database from 1991-2020 were analyzed by visual analysis software like CiteSpace and VOSviewer. Visual econometric analysis was conducted from number of publications, countries, institutions, authors, highly cited papers, journals and keywords. Result The results showed that the annual amount of soil acidification published in the world was gradually increasing in the past 30 years. China led in the number of publications along with the United States, but its centrality was low. Chinese Academy of Sciences has the most publications and the highest degree of centrality. University of Chinese Academy of Sciences, Swedish Agricultural University and China Agricultural University also have strong scientific research level and international influence. Most researchers were independent, and core groups seldom collaborated with each other. The main co-citation journals included WATER AIR SOIL POLL, PLANT SOIL, SOIL SCI SOC AM J, NATURE and SCIENCE, etc. The hotspots included nitrogen, aluminum, sedimentation, fertilization, heavy metals, forest soil, climate change, organic matter, plant growth, acidification effect and management, and they presented stage characteristics. Conclusion This study is conducive to a comprehensive understanding of international soil acidification research in recent years, and provides reference for domestic acidification research and application. -
Key words:
- Soil Acidification /
- Web of Science /
- CiteSpace /
- Bibliometrics
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表 2 国际土壤酸化发文量居前15位的机构
Table 2. Top 15 institutions in international soil acidification research
排名
Range机构
Institution首发年份
Year频次
Frequency中心度
Centrality1 中国科学院 1998 483 0.18 2 中国科学院大学 2013 157 0.02 3 瑞典农业大学 1990 129 0.06 4 中国农业大学 2004 101 0.04 5 法国农业科学研究院 1992 89 0.07 6 捷克地质调查局 1998 82 0.04 7 美国林业部 1998 78 0.02 8 美国地质调查局 1998 74 0.02 9 中国农业科学院 2010 74 0.03 10 特伦特大学 1999 72 0.03 11 雪城大学 1998 63 0.02 12 西澳大学 1998 63 0.04 13 英国沃林福德生态水文中心 2001 58 0.07 14 弗吉利亚大学 1998 57 0.03 15 缅因大学 1998 57 0.04 表 3 国际土壤酸化研究共被引次数居前15位的作者
Table 3. Top 15 authors in international soil acidification research
排名
Range作者
Author年份Year
Year共被引次数
Co-citation times中心性
Centrality1 Driscoll C T 1995 630 0.05 2 Ulrich B 1991 597 0.03 3 Vanbreemen N 1991 582 0.04 4 Galloway J N 1991 478 0.07 5 Sverdrup H 1992 427 0.01 6 Cronan C S 1991 423 0.03 7 Wright R F 1992 421 0.05 8 Guo J H 2011 412 0.02 9 Likens G E 1991 395 0.03 10 Cosby B J 1991 379 0.02 11 Aber J D 1991 374 0.04 12 Vitousek P M 1991 369 0.05 13 Marschner H 1992 353 0.04 14 Johnson D W 1991 338 0.03 15 Reuss J O 1991 324 0.02 表 4 国际土壤酸化研究被引频次前15位论文
Table 4. Top 15 papers in international soil acidification research
文章题目
Title作者
Author共被引频次
Co-citation times出版年
YearSignificant acidification in major Chinese croplands Guo等[11] 100 2010 A global analysis of soil acidification caused by nitrogen addition Tian等[8] 84 2015 Soil acidification and the importance of liming agricultural soils with particular reference to the United Kingdom Goulding等[28] 65 2016 Nitrogen deposition contributes to soil acidification in tropical ecosystems Lu等[22] 62 2014 Global assessment of nitrogen deposition effects on terrestrial plant diversity: a synthesis Bobbink等[23] 60 2010 Dissolved organic carbon trends resulting from changes in atmospheric deposition chemistry Monteith等[24] 54 2007 Enhanced nitrogen deposition over China Liu等[25] 52 2013 Use of Calcium/Aluminum Ratios as Indicators of Stress in Forest Ecosystems Cronan等[30] 49 1995 Regional trends in aquatic recovery from acidification in North America and Europe Stoddard等[32] 49 1999 Declining Acidic Deposition Begins Reversal of Forest-Soil Acidification in the Northeastern U.S. and Eastern Canada Lawrence等[33] 46 2015 Intensified soil acidification from chemical N fertilization and prevention by manure in an 18-year field experiment in the red soil of southern China Cai等[21] 43 2015 Long-Term Effects of Acid Rain: Response and Recovery of a Forest Ecosystem Likens等[27] 38 1996 Acidic Deposition in the Northeastern United States: Sources and Inputs, Ecosystem Effects, and Management Strategies Driscoll等[26] 36 2001 Potential role of biochars in decreasing soil acidification–a critical review Dai等[29] 35 2017 Long-term increases in surface water dissolved organic carbon: Observations, possible causes and environmental impacts Evans等[31] 33 2005 表 5 国际土壤酸化研究共被引频次居前15位的期刊
Table 5. Top 15 journals in international soil acidification research
排名
Range期刊
Journal首发年份
Year共被引频次
Co-citation times中心性
Centrality影响因子
Impact Factor1 WATER AIR SOIL POLL 1991 2820 0 2.520 2 PLANT SOIL 1991 2800 0.01 4.192 3 SOIL SCI SOC AM J 1991 2474 0 2.307 4 ENVIRON POLLUT 1991 2271 0 8.071 5 NATURE 1991 2259 0 49.962 6 ENVIRON SCI TECHNOL 1991 2038 0 9.028 7 SCIENCE 1991 1962 0.01 47.728 8 SCI TOTAL ENVIRON 1991 1954 0.01 7.963 9 SOIL BIOL BIOCHEM 1991 1746 0 7.609 10 J ENVIRON QUAL 1991 1739 0 2.751 11 GEODERMA 1991 1664 0 6.114 12 BIOGEOCHEMISTRY 1991 1587 0.01 4.825 13 FOREST ECOL MANAG 1991 1531 0 3.558 14 SOIL SCI 1991 1366 0 1.700 15 ECOLOGY 1991 1077 0 5.499 表 6 国际土壤酸化研究不同阶段高频关键词
Table 6. High frequency keywords in international soil acidification research relative to time period
时间段
Period高频关键词
High frequency keyword1991 ~ 1998年 acidification(544) soil(256) deposition(166) aluminum(153) nitrogen(147) soil acidification(128) water(116) pH(116) acid deposition(109) chemistry(108) forest(90) ecosystem(85) growth(84) forest soil(83) acidity(70) catchment(68) model(68) plant(58) nitrification(54) precipitation(53) 1999 ~ 2013年 acidification(1145) soil(554) nitrogen(358) deposition(316) soil acidification(277) chemistry(276) pH(272) acid deposition(226) aluminum(223) forest soil(209) water(201) ecosystem(196) forest(189) atmospheric deposition(184) heavy metal(184) growth(170) organic matter(158) catchment(158) phosphorus(148) recovery(147) 2014 ~ 2020年 acidification(836) soil(350) nitrogen(296) soil acidification(281) pH(248) carbon (212) growth(183) organic matter(179) deposition(179) diversity(177) impact(169) heavy metal(167) phosphorus(158) nitrogen deposition(149) management(146) fertilization(140) forest(123) dynamics(121) climate change(118) water(115) 注:括号内数字表示共现频次。 表 1 全球土壤酸化研究发文量居前15位的国家
Table 1. Top 15 countries in international soil acidification research
排名
Range国家
Country首发年份
Year频次
Times中心性
Centrality1 美国 1991 1246 0.46 2 中国 1991 1206 0.03 3 英国 1991 511 0.21 4 德国 1991 511 0.31 5 澳大利亚 1992 488 0.15 6 瑞典 1991 394 0.03 7 加拿大 1991 363 0.14 8 荷兰 1991 345 0.15 9 法国 1991 277 0.22 10 捷克 1995 262 0.02 11 日本 1991 242 0.09 12 挪威 1991 237 0.08 13 西班牙 1992 212 0.08 14 意大利 1991 170 0.07 15 波兰 1994 160 0.03 -
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