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Atmospheric CO2, soil nitrogen and turnover of fine roots
Open accessAbstract
summary: In most natural ecosystems a significant portion of carbon fixed through photosynthesis is allocated to the production and maintenance of fine roots, the ephemeral portion of the root system that absorbs growth‐limiting moisture and nutrients. In turn, senescence of fine roots can be the greatest source of C input to forest soils. Consequently, important questions in ecology entail the extent to which increasing atmospheric CO 2 may alter the allocation of carbon to, and demography of, fine roots. Using microvideo and image analysis technology, we demonstrate that elevated atmospheric CO 2 increases the rates of both fine root production and mortality. Rates of root mortality also increased substantially as soil nitrogen availability increased, regardless of CO 2 concentration. Nitrogen greatly influenced the proportional allocation of carbon to leaves vs. fine roots. The amount of available nitrogen in the soil appears to be the most important factor regulating fine root demography in Populus trees.
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Citations
Cited by
Responses of tree fine roots to temperature
PREGITZER, K. S., KING, J. S., BURTON, A. J., & BROWN, S. E. (2000) · New Phytologist · doi:10.1046/j.1469-8137.2000.00689.x · Cited by 517
Self-citationCheng, W. (2009) · Soil Biology and Biochemistry · doi:10.1016/j.soilbio.2008.04.018 · Cited by 323
Rees, R. M., Bingham, I. J., Baddeley, J. A., & Watson, C. A. (2005) · Geoderma · doi:10.1016/j.geoderma.2004.12.020 · Cited by 235
A Review of Fine Root Dynamics in Populus Plantations
Block, R. M. A., Van Rees, K. C. J., & Knight, J. D. (2006) · Agroforestry Systems · doi:10.1007/s10457-005-2002-7 · Cited by 129
Free-air CO2 enrichment (FACE) enhances biomass production in a short-rotation poplar plantation
Calfapietra, C., Gielen, B., Galema, A. N. J., Lukac, M., De Angelis, P., Moscatelli, M. C., Ceulemans, R., & Scarascia-Mugnozza, G. (2003) · Tree Physiology · doi:10.1093/treephys/23.12.805 · Cited by 105
Metadata
- Authors
- PREGITZER, K. S., ZAK, D. R., CURTIS, P. S., KUBISKE, M. E., TEERI, J. A., & VOGEL, C. S.
- Venue
- New Phytologist
- Publisher
- Wiley
- Published
- 1995-04
- Volume
- 129
- Issue
- 4
- Pages
- 579-585
- ISSN
- 0028-646X (ISSN-L)
- 1469-8137
- OpenAlex
- W2043832488
- Cited by
- 306
- References
- 0
- FWCI
- 23.22
- Type
- journal article
- Language
- en
- Open access
- bronze
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- CoChat. (2026). Citation check: Atmospheric CO2, soil nitrogen and turnover of fine roots. https://app.cochat.ai/papers/10.1111/j.1469-8137.1995.tb03025.x
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- PREGITZER, K. S., ZAK, D. R., CURTIS, P. S., KUBISKE, M. E., TEERI, J. A., & VOGEL, C. S. (1995). Atmospheric CO2, soil nitrogen and turnover of fine roots. New Phytologist. https://doi.org/10.1111/j.1469-8137.1995.tb03025.x
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
