CiteSpace Knowledge Graph Analysis of Research Progress on Heavy Metals in Crops in China
Using CiteSpace software,this paper made a visual analysis of 304 scientific papers of heavy metals of crops in China collected by CNKI from 2004 to 2023.The results showed that the Institute of Geophysical and Geochemical Survey,Chinese Academy of Geological Sciences focused on heavy metals of crops with the largest number of publications.The keywords"heavy metals"and"crops"both appeared for the first time in 2004,and the frequency of occurrence was 111 and 96 times,respectively.Based on the analysis of the content of the papers containing high-frequency keywords and high citations,it was found that the research on the heavy metal enrichment characteristics,pollution risk,pollution status and health risk assessment of crops in the scenarios of polluted farmland,long-term irrigation of reclaimed water,geological background area of high metal elements,and surrounding smelting area has received more attention from the authors of the paper.The hot words that have emerged in recent years indicated that the research focus of scholars has shifted from the current investigation of the content,absorption and pollution degree of heavy metals of crops to the health risk assessment,risk management and control,and pollution prevention and control practices brought about by heavy metal pollution of crops,which will be the focus of follow-up research on heavy metals of crops.
万方数据
维普
