Research Progress and Trend of Agricultural Non-Point Source Pollution from Non-Irrigated Farming Based on Bibliometrics

The agricultural non-point source (NPS) pollution caused by non-irrigated farming, such as heavy metals, nitrogen and phosphorus, has posed an extreme threat to the security of product quality watershed ecology. Thus, it is urgent sort out latest research progress future development trend effectively guide scientific technological updates in this field. This study integrates relevant literature Web Science from 1976 2021 analyzes hotspots trends field NPS farming combination with CiteSpace. results showed that proportion publications United States China accounted for 58.4%. Total Environment, Water Technology Journal American Resources Association were most published journals. topics mainly involve prevention technology, identification, load management landscape pattern evolution. In future, should combine big data platforms, spectroscopic methods, artificial intelligence etc. focus on strengthening soil testing formula fertilization management, efficient use livestock poultry breeding manure, climate change risk early warning.