摘要
文章从CNKI获取短花针茅荒漠草原研究领域的文献数据,借助科学知识图谱(VOSviewer)绘制短花针茅荒漠草原领域2003—2022年的全时段高频关键词共现图谱,以及每5 a时间周期的分时段高频关键词共现图谱。通过比较短花针茅荒漠草原研究全时段和分时段高频关键词的周期演变,识别我国短花针茅荒漠草原的整体研究概况与热点,以及各周期的研究热点、前沿及其变化规律。结果显示:(1)短花针茅荒漠草原2003—2022年的4大研究热点主题为:植物群落特征的研究,土壤因素的研究,自然因素的研究,人为因素的研究;(2)荒漠草原、载畜率、放牧等主题是短花针茅荒漠草原研究各周期稳定且变化极少的热点研究主题;(3)从2008年开始,短花针茅荒漠草原研究热点主题数量和覆盖范围显著增多,土壤养分、土壤微生物、氮沉降、降水变化等前沿热点主题出现。
This paper obtained literature data in the field of Stipa breviflora desert steppe from CNKI,and used the scientific knowledge map to draw the full-time high-frequency keyword co-occurrence map of S.breviflora desert steppe from 2003 to 2022,and the time-segmented high-frequency keyword co-occurrence map of every five years.By comparing the periodic evolution of high-frequency keywords in the whole period and time-segmented high-frequency keywords in the study of S.breviflora desert steppe,the overall research situation and hotspots of S.breviflora desert steppe in China,as well as the research hotspots,frontiers and changes of each cycle were identified.The results showed that:(1)The four research hot topics of S.breviflora desert steppe from 2003 to 2022 were:the study of plant community characteristics,the study of soil factors,the study of natural factors,and the study of human factors.(2)Desert steppe,stocking rate,grazing and other topics were the hot research topics of S.breviflora desert steppe in each cycle with stable and little change.(3)Since 2008,the number and coverage of research hot topics of S.breviflora desert steppe increased significantly,and frontier hot topics such as soil nutrients,soil microorganisms,nitrogen deposition,and precipitation change appeared.
作者
张军
刘倩
刘海军
刘菊红
ZHANG Jun;LIU Qian;LIU Haijun;LIU Juhong(College of Science,Inner Mongolia Agricultural University,Hohhot 010018,China)
出处
《草原与草业》
2024年第3期44-50,共7页
Grassland and Prataculture
基金
国家自然科学基金项目(32160332、32160258)
内蒙古农业大学学科交叉基金项目(BR231502)。
作者简介
张军(1980-),男,山西怀仁市人,副教授,主要从事生态系统稳定性相关研究,E-mail:zj325328333@163.com;通信作者:刘菊红,E-mail:1258197043@qq.com.
