Abstract
A great amount of negative influence on human existence and environmental protection has been brought on by heavy metal pollution in agriculture soil. Thus, major awareness has been diverted to the evaluation of heavy metals (EHM) in agricultural land, which is used to improve the environment and ensure people’s health. Based on 3759 publications collected from the Web of Science Core CollectionTM (WoS), this paper’s aim is to illustrate a comprehensive bibliometric run-through and visualization of the subject of EHM. Contingent on influential authors, top institutions, keywords are discussed in detail. Afterwards, the ruling publications and focal assemblage of EHM and leading publications are analyzed to discover the main research topics, according to citation analysis and reference co-citation analysis. The main motive of the paper is to assist research workers interested in the area of EHM determine the ongoing potential research opportunities and hotspots.
Highlights
The most basic material basis for human survival and development is land
A substantial number of papers have shown that heavy metal pollution in agricultural land majorly comes from human factors, including mineral mining, chemical smelting, garbage treatment, urban wastewater, vehicle exhaust emissions, pesticide and chemical fertilizer application, etc. [5,6]
Predicated on the research framework of heavy metals, three key research directions are environmental characteristics, risk assessment, and remediation of soil polluted by heavy metal [8]
Summary
The most basic material basis for human survival and development is land. Cultivated land is the necessary carrier for agricultural production. Under the historical background of urbanization, industrialization, and agricultural modernization, the trend of non-agricultural cultivation of land and agricultural labor force has intensified, the proportion of non-direct consumption of agricultural products has increased, which leads to the agricultural ecological problems, especially, the heavy metal contamination of farmland [1,2]. In the process of human daily life and industrial production, all kinds of wastes, including solid waste, waste gas and wastewater, which contain heavy metals that are difficult to degrade, are discharged. A substantial number of papers have shown that heavy metal pollution in agricultural land majorly comes from human factors, including mineral mining, chemical smelting, garbage treatment, urban wastewater, vehicle exhaust emissions, pesticide and chemical fertilizer application, etc.
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