Effects of fertilization and irrigation on components of soil carbon efflux and soil respiration in loblolly pine plantations

Peter Anderson; Christopher A. Maier

Treesearch

Effects of fertilization and irrigation on components of soil carbon efflux and soil respiration in loblolly pine plantations

Informally Refereed

Authors:

Peter Anderson, Christopher A. Maier

Year:

2020

Type:

Proceedings - Paper

Station:

Southern Research Station

Source:

e–Gen. Tech. Rep. SRS–253. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station

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Abstract

Soil carbon dioxide (CO₂) evolution is a combined product of the metabolic activity of plant roots and both free-living and symbiotic heterotrophs. Soil CO₂ efflux (S_f) rates are the second largest carbon flux in the global carbon cycle and the largest terrestrial contributor of CO₂ (Raich and Schlesinger 1992). The components of S_f can be broken down into heterotrophic respiration (R_H) and autotropic root respiration (R_R). Quantifying S_f and understanding the contribution of R_H and R_R on intensively managed sites is fundamental to understanding the carbon cycle and implications for carbon sequestration (McElligott and others 2016).

Parent Publication

Proceedings of the 20th Biennial Southern Silvicultural Research Conference

Keywords

soil, carbon flux, root respiration

Citation

Anderson, Peter H.; Maier, Christopher A. 2020. Effects of fertilization and irrigation on components of soil carbon efflux and soil respiration in loblolly pine plantations. In: Bragg, Don C.; Koerth, Nancy E.; Holley, A. Gordon, eds. 2020. Proceedings of the 20th biennial southern silvicultural research conference. e–Gen. Tech. Rep. SRS–253. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station: 174-176.