摘要
为分析2000年1月—2021年4月国内外活性氮循环,特别是梯级流动研究现状及其发展热点,以关键词“nitrogen balance”or“nitrogen flow”or“nitrogen cascade”or“nitrogen cycle”、“氮平衡”或“氮流”或“氮联级”或“氮循环”分别在Web of Science和中国知网上搜索,共获得6998篇文献。运用CiteSpace进行合作网络和关键词可视化分析,研究结果表明:(1)国外活性氮流动研究主要集中在反硝化、农业、氮循环、氮污染、氮平衡和生态分析;国内氮研究主要集中在氮循环、氮平衡、作物生长性能、作物产量、氮代谢、氮沉降、微生物对氮转化及影响和碳氮循环。国内外共同关注于氮平衡和微生物的氮转化过程及影响研究。(2)2000—2021年氮循环研究的时间演替可划分为4个阶段,其关注内容表现出明显的宏观-微生物-宏观微观耦合的演替趋势。(3)美国和中国是发文量最大的2个国家,结合中心度分析表明,发文量并不完全与影响力有相关性。(4)文献荟萃分析表明,在未来更应注重模型在活性氮定量评估过程中的作用,为优化氮素管理、提升生态环境健康提供重要依据。
To analyze the current research status and hotspots of nitrogen flow at home and abroad from January 2000 to April 2021,the keywords of"nitrogen balance",or"nitrogen flow",or"nitrogen cascade",or"nitrogen cycle"were searched on the Web of Science and CNKI,respectively,and a total of 6998 publications were found.Using CiteSpace to visualize the cooperative network and keywords,the results show that:(1)The researches on reactive nitrogen flow abroad were mainly focused on denitrification,agriculture,nitrogen cycle,nitrogen pollution,nitrogen balance,and ecological analysis;whereas the domestic researches were mainly focused on nitrogen cycle,nitrogen balance,crop growth performance,crop yield,nitrogen metabolism,nitrogen deposition,microbial influence on nitrogen transformation,carbon and nitrogen cycle.(2)From 2000 to 2021,the nitrogen cycle can be divided into four stages,which showed an obvious succession trend of macro-micro-macroµ coupling.(3)The United States and China are the top two countries with most publications.Combined with centrality analysis,it was found that the number of articles published was not completely correlated with the academic influence.(4)The meta-analysis of literature indicate that more attention should be paid to the role of model in quantitative assessment of reactive nitrogen in the future,which could provide an important basis for optimizing nitrogen management and improving ecological and environmental health.
作者
朱汪悦
王延华
赵子涵
ZHU Wang-yue;WANG Yan-hua;ZHAO Zi-han(School of Geography,Nanjing Normal University,Nanjing 210023,China;Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application,Nanjing 210023,China;Key Laboratory of Virtual Geographic Environment of Ministry of Education,Nanjing Normal University,Nanjing 210023,China)
出处
《生态与农村环境学报》
CAS
CSCD
北大核心
2022年第6期702-713,共12页
Journal of Ecology and Rural Environment
基金
国家自然科学基金(41673107)。
