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Effects of soil compaction, rain exposure and their interaction on soil carbon dioxide emission

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Effects of soil compaction, rain exposure and their interaction on soil carbon dioxide emission. / Novara, Agata; Armstrong, Alona; Gristina, Luciano et al.
In: Earth Surface Processes and Landforms, Vol. 37, No. 9, 07.2012, p. 994-999.

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Novara A, Armstrong A, Gristina L, Semple KT, Quinton JN. Effects of soil compaction, rain exposure and their interaction on soil carbon dioxide emission. Earth Surface Processes and Landforms. 2012 Jul;37(9):994-999. doi: 10.1002/esp.3224

Author

Novara, Agata ; Armstrong, Alona ; Gristina, Luciano et al. / Effects of soil compaction, rain exposure and their interaction on soil carbon dioxide emission. In: Earth Surface Processes and Landforms. 2012 ; Vol. 37, No. 9. pp. 994-999.

Bibtex

@article{6e8a57e4282a41b6bd4b456d491cf4c9,
title = "Effects of soil compaction, rain exposure and their interaction on soil carbon dioxide emission",
abstract = "Soils release more carbon, primarily as carbon dioxide (CO2), per annum than current global anthropogenic emissions. Soils emit CO2 through mineralization and decomposition of organic matter and respiration of roots and soil organisms. Given this, the evaluation of the effects of abiotic factors on microbial activity is of major importance when considering the mitigation of greenhouse gases emissions. Previous studies demonstrate that soil CO2 emission is significantly affected by temperature and soil water content. A limited number of studies have illustrated the importance of bulk density and soil surface characteristics as a result of exposure to rain on CO2 emission, however, none examine their relative importance. Therefore, this study investigated the effects of soil compaction and exposure of the soil surface to rainfall and their interaction on CO2 release. We conducted a factorial laboratory experiment with three soil types after sieving (clay, silt and sand soil), three different bulk densities (1.1?g cm3, 1.3?g cm3, 1.5?g cm3) and three different exposures to rainfall (no rain, 30 minutes and 90 minutes of rainfall). The results demonstrated CO2 release varied significantly with bulk density, exposure to rain and time. The relationship between rain exposure and CO2 is positive: CO2 emission was 53% and 42% greater for the 90 minutes and 30 minutes rainfall exposure, respectively, compared to those not exposed to rain. Bulk density exhibited a negative relationship with CO2 emission: soil compacted to a bulk density of 1.1?g cm3 emitted 32% more CO2 than soil compacted to 1.5?g cm3. Furthermore we found that the magnitude of CO2 effluxes depended on the interaction of these two abiotic factors. Given these results, understanding the influence of soil compaction and raindrop impact on CO2 emission could lead to modified soil management practices which promote carbon sequestration. Copyright (C) 2012 John Wiley & Sons, Ltd.",
keywords = "soil carbon dioxide flux, rain exposure, soil compaction",
author = "Agata Novara and Alona Armstrong and Luciano Gristina and Semple, {Kirk T.} and Quinton, {John N.}",
year = "2012",
month = jul,
doi = "10.1002/esp.3224",
language = "English",
volume = "37",
pages = "994--999",
journal = "Earth Surface Processes and Landforms",
issn = "0197-9337",
publisher = "Wiley",
number = "9",

}

RIS

TY - JOUR

T1 - Effects of soil compaction, rain exposure and their interaction on soil carbon dioxide emission

AU - Novara, Agata

AU - Armstrong, Alona

AU - Gristina, Luciano

AU - Semple, Kirk T.

AU - Quinton, John N.

PY - 2012/7

Y1 - 2012/7

N2 - Soils release more carbon, primarily as carbon dioxide (CO2), per annum than current global anthropogenic emissions. Soils emit CO2 through mineralization and decomposition of organic matter and respiration of roots and soil organisms. Given this, the evaluation of the effects of abiotic factors on microbial activity is of major importance when considering the mitigation of greenhouse gases emissions. Previous studies demonstrate that soil CO2 emission is significantly affected by temperature and soil water content. A limited number of studies have illustrated the importance of bulk density and soil surface characteristics as a result of exposure to rain on CO2 emission, however, none examine their relative importance. Therefore, this study investigated the effects of soil compaction and exposure of the soil surface to rainfall and their interaction on CO2 release. We conducted a factorial laboratory experiment with three soil types after sieving (clay, silt and sand soil), three different bulk densities (1.1?g cm3, 1.3?g cm3, 1.5?g cm3) and three different exposures to rainfall (no rain, 30 minutes and 90 minutes of rainfall). The results demonstrated CO2 release varied significantly with bulk density, exposure to rain and time. The relationship between rain exposure and CO2 is positive: CO2 emission was 53% and 42% greater for the 90 minutes and 30 minutes rainfall exposure, respectively, compared to those not exposed to rain. Bulk density exhibited a negative relationship with CO2 emission: soil compacted to a bulk density of 1.1?g cm3 emitted 32% more CO2 than soil compacted to 1.5?g cm3. Furthermore we found that the magnitude of CO2 effluxes depended on the interaction of these two abiotic factors. Given these results, understanding the influence of soil compaction and raindrop impact on CO2 emission could lead to modified soil management practices which promote carbon sequestration. Copyright (C) 2012 John Wiley & Sons, Ltd.

AB - Soils release more carbon, primarily as carbon dioxide (CO2), per annum than current global anthropogenic emissions. Soils emit CO2 through mineralization and decomposition of organic matter and respiration of roots and soil organisms. Given this, the evaluation of the effects of abiotic factors on microbial activity is of major importance when considering the mitigation of greenhouse gases emissions. Previous studies demonstrate that soil CO2 emission is significantly affected by temperature and soil water content. A limited number of studies have illustrated the importance of bulk density and soil surface characteristics as a result of exposure to rain on CO2 emission, however, none examine their relative importance. Therefore, this study investigated the effects of soil compaction and exposure of the soil surface to rainfall and their interaction on CO2 release. We conducted a factorial laboratory experiment with three soil types after sieving (clay, silt and sand soil), three different bulk densities (1.1?g cm3, 1.3?g cm3, 1.5?g cm3) and three different exposures to rainfall (no rain, 30 minutes and 90 minutes of rainfall). The results demonstrated CO2 release varied significantly with bulk density, exposure to rain and time. The relationship between rain exposure and CO2 is positive: CO2 emission was 53% and 42% greater for the 90 minutes and 30 minutes rainfall exposure, respectively, compared to those not exposed to rain. Bulk density exhibited a negative relationship with CO2 emission: soil compacted to a bulk density of 1.1?g cm3 emitted 32% more CO2 than soil compacted to 1.5?g cm3. Furthermore we found that the magnitude of CO2 effluxes depended on the interaction of these two abiotic factors. Given these results, understanding the influence of soil compaction and raindrop impact on CO2 emission could lead to modified soil management practices which promote carbon sequestration. Copyright (C) 2012 John Wiley & Sons, Ltd.

KW - soil carbon dioxide flux

KW - rain exposure

KW - soil compaction

U2 - 10.1002/esp.3224

DO - 10.1002/esp.3224

M3 - Journal article

VL - 37

SP - 994

EP - 999

JO - Earth Surface Processes and Landforms

JF - Earth Surface Processes and Landforms

SN - 0197-9337

IS - 9

ER -