Journal article

Publication year: 2016

Pages: 99-101

Journal: Soil Biology and Biochemistry

Volume number: 97

ISSN: 0038-0717

DOI Link: https://doi.org/10.1016/j.soilbio.2016.03.001

Publisher: Elsevier

Abstract: 
A N-15-tracing study was conducted to investigate the gross N transformation rates involved in the production and consumption of NH4+ and NO3- in karst region soils (a calcareous and a red soil) from southwest China under woodland. The gross mineralization rate of organic N to NH4+ was much lower in calcareous soil (3.71 mg N kg(-1) d(-1)) than in red soil (5.57 mg N kg(-1) d(-1)), while the total gross nitrification rate was significantly higher in calcareous soil (5.80 mg N kg(-1) d(-1)) than in red soil (0.70 mg N kg(-1) d(-1)). Microbial NO3- immobilization accounted for 2.9% and 153% of the total nitrification in calcareous soil and red soils respectively. Thus the calcareous soils in the karst region have a low biological N retention capacity and high N losses, which are further aggravated by the high precipitation and fractured soil structure. (C) 2016 Elsevier Ltd. All rights reserved.

Harvard Citation style: Zhu, T., Zeng, S., Qin, H., Zhou, K., Yang, H., Lan, F., et al. (2016) Low nitrate retention capacity in calcareous soil under woodland in the karst region of southwestern China, Soil Biology and Biochemistry, 97, pp. 99-101. https://doi.org/10.1016/j.soilbio.2016.03.001

APA Citation style: Zhu, T., Zeng, S., Qin, H., Zhou, K., Yang, H., Lan, F., Huang, F., Cao, J., & Müller, C. (2016). Low nitrate retention capacity in calcareous soil under woodland in the karst region of southwestern China. Soil Biology and Biochemistry. 97, 99-101. https://doi.org/10.1016/j.soilbio.2016.03.001