Net anthropogenic nitrogen input to Huaihe River Basin, China during 1990-2010. Responses of riverine nitrogen export to net anthropogenic nitrogen inputs: A review. Correlation analysis of spatial variability of Soil available nitrogen and household nitrogen inputs at Pujiang County Analysis of nitrogen inputs and soil nitrogen loading in different kinds of orchards in Shaanxi Province Accounting methods, uncertainties and influential factors of net anthropogenic nitrogen input (NANI) Responses of Wetland Plants to Exogenous Nitrogen Inputs Nitrogen use efficiency in stereoscopic planting rice field in North China Effects of nitrogen input on CH4 production, oxidation and transport in soils, and mechanisms: a review Effects of nitrogen deposition on critical fractions of soil organic carbon in terrestrial ecosystems Nitrogen balance of agro-ecosystem in a typical watershed in the hilly area of central Sichuan Basin