Effects of Nitrogen and Phosphorus Addition on Soil Extracellular Enzyme Activity and Stoichiometry in Chinese Fir () Forests.

Soil extracellular enzymes play an important role in microbial functions and soil nutrient cycling in the context of increasing N deposition globally. This is particularly important for Chinese fir () forests because of the decline in soil fertility induced by successive rotation. In this study, we aimed to determine the effects of simulated N deposition (N30: 30 kg ha year; N60: 60 kg ha year) and phosphorus addition (P20: 20 mg kg; P40: 40 mg kg) on the activity and stoichiometry of soil extracellular enzymes related to soil C, N, and P cycling in Chinese fir.