Application of ornamental plants in constructed wetlands for wastewater treatment: A scientometric analysis

Abstract

The application of ornamental plants in constructed wetlands (CW) is increasingly of interest to researchers, professionals actively involved in wetland management and/or wastewater treatment (WWT), so it is necessary to know the trends in this field of research. The objective of this study was to develop a scientometric study on the use of ornamental plants in CWs for the WWT during the period 2002–2022. For this, a search of the information was carried out in the Scopus database, including all the articles and reviews related to this field. The analysis of the recovered documents allowed to know key aspects of the evolution of production in recent years, the maturity of research in this field, identify the most used ornamental plants and therefore identify gaps. Likewise, it was possible to identify the countries, the most relevant authors, the main journals and the most cited articles through which knowledge in this area is disseminated. The results showed that Mexico, Brazil, USA, China and India have the highest number of publications related to the use of ornamental plants in the CWs. It was found that the most used ornamental plants are Canna, Iris, Heliconia and Zantedeschia. This analysis can help researchers to identify new research approaches in this field. It is concluded that this field of knowledge has aroused great interest since 2002; however, more research can still be carried out on the application of CWs with ornamental plants in cold climates, the influence of the substrate on the growth of these plants.