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Chinese Agricultural Science Bulletin ›› 2024, Vol. 40 ›› Issue (31): 69-77.doi: 10.11924/j.issn.1000-6850.casb2024-0430

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Dynamic Analysis of Agricultural Non-point Source Pollution Research in Chaohu Lake Based on CiteSpace

WU Jie1,2(), WU Lei1,3(), WAN Nengsheng4, CHU Yin1,3, WANG Xiaofei1, ZHANG Jun5   

  1. 1 College of Resources and Environment, Anhui Agricultural University, Hefei 230036
    2 Shanghai Lida College, Shanghai 201608
    3 Anhui Province Key Lab of Farmland Ecological Conservation and Nutrient Utilization, Hefei 230036
    4 Lake Ecological Environment Research Institute of Anhui Chaohu Management Bureau, Hefei 238000
    5 Hefei Agricultural Economic and Technical Service Management Station, Hefei 230092
  • Received:2024-06-26 Revised:2024-08-29 Online:2024-11-05 Published:2024-11-04

Abstract:

Based on the domestic and international literature related to the management of agricultural non-point source pollution in Chaohu Lake, the dynamic changes in the field were analyzed, including its development process, research hotspots, dynamic frontiers and possible future research directions. Taking 394 relevant literatures included in CNKI, Wanfang data, Wipro database and Web of Science core ensemble published between 1998 to June 2023 as data sources, CiteSpace visualization and analysis software were employed to draw the knowledge map of Chaohu Lake’s non-point source pollution research. This allowed for an analysis of the distribution of authors, institutions and journals involved in the research as well as a study of the development from a dynamic viewpoint. The results indicated that (1) the development process could be divided into four stages and the paper issuance numbers were correlated with trends in total nitrogen and total phosphorus changes in Chaohu Lake. Furthermore it was found that there was room for improvement regarding overall knowledge levels within this field. (2) The research hotspots identified within Chinese literature mainly focused on nitrogen and phosphorus loss, livestock and poultry farming, spatial distribution and countermeasures. Conversely English literature focuses on runoff, impacts of pollutants, analyzing sources and management measures of pollutants. The research on non-point source pollution in artificial wetlands was still a blank field. (3) The prominent direction of future research was to use “3S” and other technologies to quantitatively characterize the complex spatiotemporal processes of pollution occurrence, revealing the mechanism of migration and transformation of agricultural non-point source pollution, and predicting changes in the “water environment” under pollutant load. Under the premise of stabilizing yield, the whole process involved implementing targeted fertilization, precise fertilizer control, and reducing nitrogen and phosphorus loss. The management of agricultural non-point source pollution in Chaohu Lake is a long-term and continuous endeavor that requires increased collaboration between various departments and institutions to establish a unified information database. This also requires more understanding and participation from domestic and foreign scholars in the management of Chaohu Lake.

Key words: agricultural non-point source pollution, research trends, bibliometrics, CiteSpace, Chaohu Lake