Quist ME, Nasholm T, Lindeberg J, Johannisson C, Hogbom L, Hogberg P
Responses of a nitrogen-saturated forest to a sharp decrease in nitrogen input
Journal of Environmental Quality: 1999 28:1970-1977
The reversibility of induced N saturation was investigated in a 46- yr-old pine (Pinus sylvestris L.) forest in northern Sweden Ammonium nitrate has been applied annually since 1971 to plots (30 by 30 m) at average dosages of 36 (N1), 72 (N2), and 108 (N3) kg N ha(-1) yr(-1): with or without P and K addition (background N deposition is e-link to journal