基于CiteSpace的草地枯落物研究热点及趋势  

Research Hotspots and Trends of Grassland Litter Based on CiteSpace

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作  者:乌日力格 乌兰图雅[1,2] 布和 昂格力玛 Wurilige;Wulantuya;Buhe;Anggelima(College of Geographical Science,Inner Mongolia Normal University,Hohhot 010022,China;Key Laboratory of Mongolian Plateau's Climate System at Universities of Inner Mongolia Autonomous Region,Hohhot 010022,China)

机构地区:[1]内蒙古师范大学地理科学学院,内蒙古呼和浩特010022 [2]蒙古高原气候变化与区域响应内蒙古自治区高等学校重点实验室,内蒙古呼和浩特010022

出  处:《内蒙古师范大学学报(自然科学版)》2025年第2期142-150,共9页Journal of Inner Mongolia Normal University(Natural Science Edition)

基  金:国家自然科学基金资助项目“基于国别的蒙古高原土地沙漠化对比研究”(41861024);内蒙古自治区重点研发和成果转化计划资助项目“《蒙古高原生态大数据中心》平台建设与应用示范”(2023KJHZ0027);内蒙古自治区自然科学基金资助项目“基于高光谱影像的典型草原草场枯落物监测研究”(2024MS04014);内蒙古师范大学基本科研业务费专项基金资助项目“内蒙古典型草原草地枯落物特征及其影响研究”(2022JBZD017)。

摘  要:利用中国知网(CNKI)数据库和Web of Science(WoS)核心合集数据库的数据,借助可视化软件,采用文献计量学方法,梳理了近45年草地枯落物研究脉络。结果发现:(1)发文数量由1977年的2篇增长至2022年的143篇,经历了缓慢增长-波动增长-稳步增长3个阶段,研究主力以中国、美国学者为主,中国科学院和美国农业部农业研究局发文量较多;(2)枯落物分解一直是草地枯落物研究的核心内容,之后研究内容拓展到枯落物分解对土壤养分的影响以及枯落物积累对植被的影响,近几年的研究聚焦于放牧对草地枯落物分解的影响,并且研究区域主要集中在温带典型草原和荒漠草原;(3)通过关键词共现频次分析发现,20世纪末的研究侧重于枯落物分解对土壤养分、土壤微生物的影响,21世纪初的研究则转移到植物-枯落物-土壤之间的碳、氮、磷元素的循环,近几年的研究聚焦于枯落物分解对草地生态系统土壤碳储量变化的影响;(4)枯落物质量对枯落物分解乃至对草地生态系统碳循环的影响成为草地枯落物研究的主要趋势,并且今后研究中也应重视冷季草场枯落物的土壤保护作用。Utilizing data from the China National Knowledge Infrastructure(CNKI)database and the Web of Science(WoS)Core Collection,this study sorted out the research trends of grassland litter over the past 45 years by bibliometric methods with the help of visualization software.The following results were found.(1)The number of publications increased from 2 in 1977 to 143 in 2022,experiencing three stages of slow growth,fluctuating growth,and steady growth.The research was predominantly led by scholars from China and the United States,and the Chinese Academy of Sciences and the Agricultural Research Service of the United States Department of Agriculture made significant contributions to the number of publications.(2)Litter decomposition had been a core focus of grassland litter research,with subsequent research content expanding to the impacts of litter decomposition on soil nutrients and the effects of litter accumulation on vegetation.The research in recent years concentrated on the influence of grazing on grassland litter decomposition,primarily in typical grasslands and desert grasslands in temperate zone.(3)Analysis of keyword co-occurrence frequencies indicated that research at the end of the 20th century placed emphasis on the effects of litter decomposition on soil nutrients and soil microorganisms,and the research focus shifted to the cycling of carbon,nitrogen,and phosphorus among plants,litter,and soil at the beginning of the 21st century.In recent years,research concentrated on the impact of litter decomposition on soil carbon storage changes in grassland ecosystems.(4)The influence of litter quality on litter decomposition and even the carbon cycle in grassland ecosystems emerged as a major trend in grassland litter research.Future studies should also pay attention to the soil protective role of litter in cold-season pasture.

关 键 词:枯落物质量 草地碳循环 土壤养分 可视化分析 草地退化 

分 类 号:K903[历史地理—人文地理学]

 

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