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High‐level nitrogen additions accelerate soil respiration reduction over time in a boreal forest.
- Source :
-
Ecology Letters . Aug2022, Vol. 25 Issue 8, p1869-1878. 10p. - Publication Year :
- 2022
-
Abstract
- Increased nitrogen (N) inputs are widely recognised to reduce soil respiration (Rs), but how N deposition affects the temporal dynamics of Rs remains unclear. Using a decade‐long fertilisation experiment in a boreal larch forest (Larix gmelini) in northeast China, we found that the effects of N additions on Rs showed a temporal shift from a positive effect in the short‐term (increased by 8% on average in the first year) to a negative effect over the longer term (decreased by 21% on average in the 11th year). The rates of decrease in Rs for the higher N levels were almost twice as high as those of the low N level. Our results suggest that the reduction in Rs in response to increased N input is accelerated by high‐level N additions, and experimental high N applications are likely to overestimate the contribution of N deposition to soil carbon sequestration in a boreal forest. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 1461023X
- Volume :
- 25
- Issue :
- 8
- Database :
- Academic Search Index
- Journal :
- Ecology Letters
- Publication Type :
- Academic Journal
- Accession number :
- 158179875
- Full Text :
- https://doi.org/10.1111/ele.14065