N and P combined addition accelerates the release of litter C, N, and most metal nutrients in a N-rich subtropical forest - Tie, Liehua (Guizhou University. Institute for Forest Resources and Environment of Guizhou) ; Wei, Shengzhao (Sichuan Agricultural University. College of Forestry) ; Peñuelas, Josep (Centre de Recerca Ecològica i d'Aplicacions Forestals) ; Sardans i Galobart, Jordi (Centre de Recerca Ecològica i d'Aplicacions Forestals) ; Liu, Xing (Sichuan Agricultural University. College of Forestry) ; Zhou, Shixing (Sichuan Agricultural University. College of Forestry) ; Liu, Xiong (Sichuan Agricultural University. College of Forestry) ; Bose, Arun K (Swiss Federal Institute for Forest. Snow and Landscape Research) ; Huang, Congde (Sichuan Agricultural University. College of Forestry)