Abstract
Water quality assessment is an increasingly important area in environmental study. Assessment of water quality can be a process include multiple factors which can causing influence on water quality. Researchers have developed many evaluation indices In order to display the results of water quality evaluation more intuitively. Water quality index has been the important fields in sustainable water quality management. This research based on the papers published of 20 years from web of science, analyzed the data by using CiteSpace 5.0. The result shows the direction, frontiers and hotspots of water quality index. Research from institutes, research keywords, word frequency, quoted literature and Subjects. The result shows in view of the world, India, China, US, Brazil and Iran are major countries. From the hotspots and frontiers of research, key words such like water quality management, drinking water quality are the main research hotspots and frontiers of social network in the contamination of water and water quality problem in China and India. this study provide a method for scientists to keep up with the situation of the study on water quality management., and puts forward suggestions for the further research on sustainable water quality index.
Highlights
Water quality assessment is an increasingly important area in environmental study
For the high quality water quality management, water evaluation is an indispensable part of water policy [1]
T A large number of documents are greatly correlated with economic strength and high research investment; except USA and Canada, other countries are developing or transitional countries. This shows without strong economic strength, advanced equipment, outstanding high-quality scientific research team, developing countries has high regard to the development of water quality protect because water quality is very significant to sustainable social-economic development of the countries, like Iran and India
Summary
Water quality assessment is an increasingly important area in environmental study. To date, various methods have been developed and introduced to evaluate the water quality lack of method to provide the easy to understand the situation of water quality information has existed as a problem for many years. In recent years there have been many studies focused on the issue of the water quality protection. As a core tool of water quality evaluation, WQI is significant for theory research and policy decision. CiteSpace was applied as visualized network, and the studies among different countries research hotspots and research frontier were compared . In this study, utilizing the CiteSpace as the main tool analysed papers of the last 20 years, and find the popular research topic and hot point of water quality protection. This research use CiteSpace to carry out the visualized network, and compared the studies between different countries, research hotspots and research frontier
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