Assessment of nitrogen balance and benchmarks for sustainable N management in the main cropping systems of China
Chong Zhang1, Xiaotang Ju1, David Powlson2, Oene Oenema3 and Pete Smith4, (1)China Agricultural University, College of Resources and Environmental Sciences, Beijing, China, (2)Rothamsted Research, Department of Sustainable Agriculture Sciences, Harpenden, United Kingdom, (3)Wageningen University, Department of Soil Quality, Wageningen, Netherlands, (4)University of Aberdeen, Institute of Biological and Environmental Sciences, Aberdeen, United Kingdom
