DNDC模型研究进展与前沿分析——基于Citespace文献计量分析  

Research Progress and Frontier Analysis of DNDC Model:Based on Bibliometric Analysis of Citespace

作　　者：项正宇 吴梦洋 操信春[1] XIANG Zheng-yu;WU Meng-yang;CAO Xin-chun(College of Agricultural Science and Engineering,Hohai University,Nanjing 210098,China)

机构地区：[1]河海大学农业科学与工程学院,南京210098

出　　处：《节水灌溉》2024年第8期85-93,109,共10页Water Saving Irrigation

基　　金：国家自然科学基金项目(51979074);江苏省自然科学基金项目(BK20221504)。

摘　　要：为研究DNDC(Denitrification-Decomposition)模型的演进路径和应用现状,利用CiteSpace软件分析了Web of Science核心合集数据库中1996-2022年间关于“DNDC模型”的研究文献,从发文量分布、关键词、研究热点演进、科研力量等方面进行阐释,并绘制相关图谱。结果表明:DNDC模型研究与应用呈现热度稳步上升、研究主题波浪式减少等趋势;关键词共现分析找出了management、rainfall events、soil organic carbon、denitrification、greenhouse gas、process oriented model等核心关键词,关键词聚类分析识别出Crop model、Soil organic carbon、Denitrification、Life cycle assessment、Ipcc、Agricultural soils、Carbon dynamic、Blue carbon、Greenhouse gases emission、Nitrous oxide等11个聚类;研究力量以中国、美国、加拿大为主,分别占总发文量的41.68%、41.20%和16.16%,中国科研力量在国际合作中的影响力仍有提升空间。当前DNDC模型研究聚焦于作物产量预测、节水农业、土壤碳固存、氮浸出和温室气体等方面。未来DNDC模型可以向提升参数输入精度、减少区域尺度模拟的不确定性、扩大模型适用区域等方面改进。In order to study the evolution path and application status of DNDC(Denitrification-Decomposition)model,CiteSpace software was used to analyze the research literature on DNDC model in the core collection database of Web of Science from 1996 to 2022.This study explains the distribution of the number of papers,keywords,research hotspot evolution,and research strength,and draws the relevant maps.The results show that the research and application of DNDC model show a trend of steady increase in popularity and wavy decrease in research topics.By keyword co-occurrence analysis,the core keywords such as management,rainfall events,soil organic carbon,denitrification,greenhouse gas and process oriented model were found.Keywords cluster analysis,Identify Crop model,Soil organic carbon,Denitrification,Life cycle assessment,Ipcc,Agricultural soils,Carbon dynamic and Blue carbon,Greenhouse gases emission,Nitrous oxide and other 11 clusters;China,the United States and Canada are the main research forces,accounting for 41.68%,41.20%and 16.16%of the total number of publications,respectively.China´s scientific research influence in international cooperation still has room for improvement.Current research on DNDC models focuses on crop yield prediction,water-saving agriculture,soil carbon sequestration,nitrogen leaching and greenhouse gases.Research on the DNDC model shows a trend of steadily increasing interest and a wavy decrease in research themes.In the future,the DNDC model can be improved to improve the accuracy of parameter input,reduce the uncertainty of regional scale simulation,and expand the application area of the model.

关 键 词：DNDC(Denitrification-Decomposition) 热点演化 CITESPACE 可视化分析 

分 类 号：S181[农业科学—农业基础科学]