Journalartikel

Jahr der Veröffentlichung: 2017

Seiten: 25-30

Zeitschrift: European Journal of Soil Biology

Bandnummer: 81

ISSN: 1164-5563

eISSN: 1778-3615

DOI Link: https://doi.org/10.1016/j.ejsobi.2017.06.002

Verlag: Elsevier

Abstract: 

Quartz sand is often mixed with soil to enable leaching in studies where nitrate leaching is simulated. However, the addition of sand may also have an effect on the N transformations dynamics but this aspect has never been studied so far. A(15)N tracer experiment was conducted to investigate this effect on coniferous forest soil (CF), rice-rice rotation soil (RR), rice-wheat rotation soil (RW) and maize-wheat rotation soil (MW). Results showed that the addition of quartz sand into the three agricultural soils (RR, RW and MW) reduced the net production of NO3--N, but the mechanisms involved in the reduction among the three soils were different. In the RR soil, the addition of quartz sand had no effect on gross NO3--N production (autotrophic nitrification + heterotrophic nitrification), but enhanced gross NO3--N consumption (NO3--N immobilization + dissimilatory NO3- reduction to NH4+), resulting in reduced NO3--N built-up. In the RW soil, the addition of quartz sand significantly inhibited gross autotrophic nitrification rates and stimulated gross NO3--N immobilization rate. In the MW soil, only dissimilatory NO3- reduction to NH4+ (DNRA) rate was stimulated by the addition of quartz sand. In contrast, in the CF soil sand addition did not have an effect on the gross N transformation rates. Our results show that sand additions will alter N transformations dynamics in an unforeseeable manner and should be considered with the utmost caution.

Harvard-Zitierstil: Wang, J., Zhang, J., Müller, C. and Cai, Z. (2017) Evaluation of the mixing of sands into soils on nitrification potential from different land-use systems, European Journal of Soil Biology, 81, pp. 25-30. https://doi.org/10.1016/j.ejsobi.2017.06.002

APA-Zitierstil: Wang, J., Zhang, J., Müller, C., & Cai, Z. (2017). Evaluation of the mixing of sands into soils on nitrification potential from different land-use systems. European Journal of Soil Biology. 81, 25-30. https://doi.org/10.1016/j.ejsobi.2017.06.002