Effects of N addition on nutrient resorption efficiency and C:N:P stoichiometric characteristics in Stipa bungeana of steppe grasslands in the Loess Plateau, China
AN Zhuo, NIU De-Cao, WEN Hai-Yan, YANG Yi, ZHANG Hong-Rong, FU Hua
Chin J Plant Ecol . 2011, (8): 801 -807 .  DOI: 10.3724/SP.J.1258.2011.00801