Articles | Volume 14, issue 20
https://doi.org/10.5194/bg-14-4815-2017
https://doi.org/10.5194/bg-14-4815-2017
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

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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, https://doi.org/10.1016/j.soilbio.2012.11.009, 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, https://doi.org/10.1890/10-0459.1, 2011.
Dail, D. B., Davidson, E. A., and Chorover, J.: Rapid abiotic transformation of nitrate in an acid forest soil, Biogeochemistry, 54, 131–143, https://doi.org/10.1023/A:1010627431722, 2001.
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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.
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