Articles | Volume 14, issue 20
Research article
27 Oct 2017
Research article |  | 27 Oct 2017

Contrasting effects of ammonium and nitrate additions on the biomass of soil microbial communities and enzyme activities in subtropical China

Chuang Zhang, Xin-Yu Zhang, Hong-Tao Zou, Liang Kou, Yang Yang, Xue-Fa Wen, Sheng-Gong Li, Hui-Min Wang, and Xiao-Min Sun

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Cited articles

Allison S. D. and Vitousek P. M.: Response of extracellular enzymes to simple and complex nutrient inputs, Soil Biol. Biochem., 37, 937–943,, 2005.
Bao, S. D.: Soil and agricultural chemistry analysis, 3rd Edn., Agriculture Press, Beijing, 2008 (in Chinese).
Burns, R. G., DeForest, J. L., Marxsen, J., Sinsabaugh, R. L., Stromberger, M. E., Wallenstein, M. D., Weintraub, M. N., and Zoppini, A.: Soil enzymes in a changing environment: Current knowledge and future directions, Soil Biol. Biochem., 58, 216–227,, 2013.
Cusack, D. F., Silver, W. L., Torn, M. S., Burton, S. D., and Firestone, M. K.: Changes in microbial communities characteristics and soil organic matter with nitrogen additions in two tropical forests, Ecology, 92, 621–630,, 2011.
Dail, D. B., Davidson, E. A., and Chorover, J.: Rapid abiotic transformation of nitrate in an acid forest soil, Biogeochemistry, 54, 131–143,, 2001.
Short summary
Ammonium additions had stronger inhibition effects on soil microbial biomass of different communities than nitrate addition. However, inhibition effects of nitrate additions on P hydrolase were stronger than ammonium additions, but not on C- and N-hydrolase and oxidase. Ammonium additions decreased N-acquisition specific enzyme activities normalized by total microbial biomass, but increased P-acquisition specific enzyme activities. Different effects on soil pH may explain the different effects.
Final-revised paper