This study was funded by the National Natural Science Foundation of China[grant numbers 41571324,41673108,41701329,and 41771380];the National Program on Key Basic Research Project(973 Program)[grant number 2014CB953800];the Natural Science Foundation of the Jiangsu Higher Education Institutions of China[grant number 16KJD170001];the Natural Science Foundation of Hainan Province,China[grant number 317190];the CAGS Research Fund[grant numbers YYWF201637,201724].
Simple and inexpensive estimation of the rates and sources of atmospheric nitrogen(N)deposition is critical for its effective mitigation in a region with different land-use types.In this study,the N content and N isot...