Knowledge Map Analysis of Dissolved Organic Carbon Research Based on Bibliometrics

doi:10.11924/j.issn.1000-6850.casb2025-0042

Abstract

Abstract:

To systematically elucidate the developmental trends, evolving research foci, and frontier directions in dissolved organic carbon (DOC) studies from 2004 to 2023, a comprehensive retrieval and screening process was conducted utilizing the Web of Science and CNKI databases, resulting in the identification of 3003 relevant publications. Bibliometric analysis was performed using visualization tools including VOSviewer and CiteSpace to construct knowledge maps encompassing dimensions such as contributing countries, institutions, and keywords. The results indicate a consistent annual increase in the volume of published research on DOC. The Chinese Academy of Sciences was identified as the most prolific research institution in this field. Globally, research output is predominantly led by the United States (748 publications) and China (556 publications), which have established close international collaborative networks. Research hotspots primarily concentrate on agricultural soils and environmental protection, with the scope of investigation expanding from terrestrial environments to aquatic systems including rivers, lakes, and marine ecosystems. Furthermore, increasing scholarly attention is being directed toward critical issues such as climate change impacts and bioavailability. This study systematically delineates the core research entities, spatiotemporal evolution of key themes, and seminal literature in DOC research, thereby providing a bibliometric foundation and practical reference for clarifying research trajectories and identifying future directions in this field.

Key words: DOC, bibliometric, visualization analysis, development context

YANG Xiaonan, ZHAO Guorui, ZHAO Lingling, HU Jingbo, WANG Jiale, DU Jiao, LIU Guoshun, LIU Zhanqing, CHEN Chong, ZHANG Songtao. Knowledge Map Analysis of Dissolved Organic Carbon Research Based on Bibliometrics[J]. Chinese Agricultural Science Bulletin, 2025, 41(28): 111-121.

Figures/Tables 14

References 56

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序号	国家/地区	发文量/篇	中介中心性	篇均被引频次/次
1	美国	748	0.36	32
2	中国	556	0.24	20
3	加拿大	274	0.06	29
4	英国	218	0.10	42
5	德国	208	0.32	31
6	瑞典	149	0.14	30
7	澳大利亚	148	0.07	34
8	日本	99	0.02	22
9	法国	97	0.20	36
10	西班牙	93	0.10	23

序号	国家/地区	发文量/篇	中介中心性	篇均被引频次/次
1	美国	748	0.36	32
2	中国	556	0.24	20
3	加拿大	274	0.06	29
4	英国	218	0.10	42
5	德国	208	0.32	31
6	瑞典	149	0.14	30
7	澳大利亚	148	0.07	34
8	日本	99	0.02	22
9	法国	97	0.20	36
10	西班牙	93	0.10	23

序号	发文机构	发文量/篇	中介中心性	国家/地区
1	中国科学院	259	0.36	中国
2	美国内政部	87	0.13	美国
3	亥姆霍兹联合会	83	0.18	德国
4	加州大学系统	82	0.18	美国
5	美国地质勘探局	80	0.10	美国
6	英国生态与水文学中心	78	0.06	英国
7	佛罗里达州立大学	75	0.13	美国
8	瑞典农业科学大学	63	0.05	瑞典
9	法国国家科学研究中心	63	0.09	法国
10	班戈大学	43	0.03	英国

序号	发文机构	发文量/篇	中介中心性	国家/地区
1	中国科学院	259	0.36	中国
2	美国内政部	87	0.13	美国
3	亥姆霍兹联合会	83	0.18	德国
4	加州大学系统	82	0.18	美国
5	美国地质勘探局	80	0.10	美国
6	英国生态与水文学中心	78	0.06	英国
7	佛罗里达州立大学	75	0.13	美国
8	瑞典农业科学大学	63	0.05	瑞典
9	法国国家科学研究中心	63	0.09	法国
10	班戈大学	43	0.03	英国

数据库	作者	发文数量/篇	数据库	作者	发文数量/篇
CNKI	杨玉盛	17	WOS	Spencer Robert G M	25
	周建斌	15		Laudon Hjalmar	23
	杨智杰	12		Worrall F	20
	刘小飞	9		Mcdowell William H	17
	谢锦升	9		Hansell Dennis A	16
	司友涛	7		Kang Shichang	16
	林伟盛	7		Song Changchun	15
	李太魁	6		Worrall Fred	13
	熊德成	6		Burt T P	12
	胡锋	6		Evans Chris D	12