The computer-aided analysis method is used to analyze the nitrogen pollution in the ecological river, which provides a basis for solving that problem. Taking the Shanzi Reservoir in the east of Fujian Province as the research area, the numerical simulation was used to simulate and analyze the...

Cropland is a main source of global nitrogen pollution^1,2. Mitigating nitrogen pollution from global croplands is a grand challenge because of the nature of non-point-source pollution from millions of farms and the constraints to implementing pollution-reduction measures, such as lack of financial...

The aim of this study was to evaluate nitrogen pollution risks from distinct materials composting with the discrepancy of component, including chicken manure, municipal solid and straw waste (CM, MSW, SW). Results showed total nitrogen maximum mean concentrations were observed in CM (39.57 g/kg)....

In order to verify the nitrogen pollution status of shallow groundwater in typical city of Taihu Lake Basin, urban planning area of Suzhou city was selected as the study area, and 14 sampling sites representing different land use types were selected to carry out water quality analysis. The status,...

The characteristics of nitrogen contamination of shallow groundwater were evaluated through current status analysis and trend detection of ammonium-N and nitrate-N concentrations under various cropping patterns to assess the effectiveness of rational fertilization in the Choushui River alluvial...

The Songhua River Basin is one of the most nitrogen polluted river basins in C.hina.It is important to understand the change and main sources of nitrogen in the Songhua River Basin.In order to study the spatial-temporal variation characteristics and main sources of NH_4⁺-N,TN and NO_3^--N in the...

Nitrogen pollution is a severe problem in the Songhua River Basin (SHR) in China. Samples were collected from 36 sections of the SHR during the high, low, and flat seasons of the river, and the main sources of nitrogen in the water were qualitatively analyzed with isotope data for nitrogen and...

With the rapid development of modern agriculture, non-point source nitrogen pollution from higher polluting farms has become one of the main contributions to the eutrophication of the watershed. This paper first constructed a tripartite evolutionary game model concerning local governments, higher...

Excessive agricultural nitrogen use causes environmental problems globally1, to an extent that it has been suggested that a safe planetary boundary has been exceeded. Earlier estimates for the planetary nitrogen boundary, however, did not account for the spatial variability in both ecosystems'...

Nitrogen pollution in urban stormwater has led to serious quality issues in urban water. Nitrogen pollution mitigation requires fully understanding the transport process and major nitrogen sources in urban stormwater. In this study, the concentrations and flux of various nitrogen forms during urban ...