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The effect of carbon availability on N2O emissions is moderated by soil phosphorus.
- Source :
-
Soil Biology & Biochemistry . Mar2020, Vol. 142, pN.PAG-N.PAG. 1p. - Publication Year :
- 2020
-
Abstract
- This research investigated the effect of long-term phosphorus (P) addition relative to carbon (C) availability on nitrous oxide (N 2 O) emissions from an ungrazed grassland soil via two incubation experiments. No significant effect of soil P on N 2 O was found under C-limited conditions, while under added-C, cumulative N 2 O was significantly higher from low-P (p < 0.05) rather than high-P soils. CO 2 was not significantly different between P-levels. This highlights the influence of soil P on N 2 O emissions under non C-limiting conditions. This is one of the first studies demonstrating available-C moderating the effect of P on N 2 O emissions from temperate grassland soils. • Phosphorus effects on N 2 O emissions from soils are poorly understood. • Carbon limitation masks effects of phosphorus on nitrous oxide emissions. • When soil not C-limited, N 2 O reduced at higher P concentrations. • Manipulation of C:N:P ratio can reduce N 2 O emissions from grassland. [ABSTRACT FROM AUTHOR]
- Subjects :
- *PHOSPHORUS in soils
*GRASSLAND soils
*NITROUS oxide
*CARBON
*PHOSPHORUS
*SOILS
Subjects
Details
- Language :
- English
- ISSN :
- 00380717
- Volume :
- 142
- Database :
- Academic Search Index
- Journal :
- Soil Biology & Biochemistry
- Publication Type :
- Academic Journal
- Accession number :
- 141808013
- Full Text :
- https://doi.org/10.1016/j.soilbio.2020.107726