TY - JOUR
T1 - Trace gas emissions from soil of the central highlands of Mexico as affected by natural vegetation
T2 - A laboratory study
AU - Angoa Pérez, M. V.
AU - Gonzalez Castañeda, J.
AU - Frías-Hernández, J. T.
AU - Franco-Hernández, O.
AU - Van Cleemput, O.
AU - Dendooven, L.
AU - Olalde, V.
N1 - Funding Information:
Acknowledgements We thank the Consejo Estatal de Ciencia y Tecnología del Estado de Guanajuato (CONCyTEG) and Guana-juato University for soil characterization, G. Hofman for the use of the Skalar automatic analyser, and J. Castillo, J. C. Avila-Frausto, A. Cárdenas-Flores, J. Cervantes, Danny Pauwels, and L. A. Jiménez-Magdaleno for technical assistance. The research was funded by the Flemish Interuniversity Council—Own Initiatives (VLIR-EI) Belgium. V. A.-P., O. F.-H., J. G.-C. received grant-aided support from VLIR-EI, while L. D. was on sabbatical leave from the Centro de Investigación y de Estudios Avanzados del I.P.N. (CINVESTAV) at Ghent University and received grant-aided support from the Consejo Nacional de Ciencia y Tecnología (CONACyT) México and Ghent University.
PY - 2004/9
Y1 - 2004/9
N2 - In the central highlands of Mexico, mesquite (Prosopis laevigata) and huisache (Acacia schaffneri), N2-fixing trees or shrubs, dominate the vegetation and are currently used in a reforestation program to prevent erosion. We investigated how natural vegetation or cultivation of soil affected oxidation of CH4, and production of N2O. Soil was sampled under the canopy of mesquite (MES treatment) and huisache trees (HUI treatment), outside their canopy (OUT treatment) and from fields cultivated with maize (ARA treatment) at three different sites while production of CO2, and dynamics of CH4, N2O and inorganic N (NH4 +, and NO3-) were monitored in an aerobic incubation. The production of CO2 was 2.3 times higher and significantly greater in the OUT treatment, 3.0 times higher in the MES treatment and 4.0 times higher in the HUI treatment compared to the ARA treatment. There was no significant difference in oxidation of CH4 between the treatments, which ranged from 0.019 μg CH4-C kg -1 day-1 for the HUI treatment to 0.033 CH4-C kg-1 day-1 for the MES treatment. The production of N 2O was 30 μg N2O-N kg-1 day-1 in the MES treatment and >8 times higher compared to the other treatments. The average concentration of NO3- was 2 times higher and significantly greater in the MES treatment than in the HUI treatment, 3 times greater than in the OUT treatment and 10 times greater than in the ARA treatment. It was found that cultivation of soil decreased soil organic matter content, C and N mineralization, but not oxidation of CH4 or production of N2O.
AB - In the central highlands of Mexico, mesquite (Prosopis laevigata) and huisache (Acacia schaffneri), N2-fixing trees or shrubs, dominate the vegetation and are currently used in a reforestation program to prevent erosion. We investigated how natural vegetation or cultivation of soil affected oxidation of CH4, and production of N2O. Soil was sampled under the canopy of mesquite (MES treatment) and huisache trees (HUI treatment), outside their canopy (OUT treatment) and from fields cultivated with maize (ARA treatment) at three different sites while production of CO2, and dynamics of CH4, N2O and inorganic N (NH4 +, and NO3-) were monitored in an aerobic incubation. The production of CO2 was 2.3 times higher and significantly greater in the OUT treatment, 3.0 times higher in the MES treatment and 4.0 times higher in the HUI treatment compared to the ARA treatment. There was no significant difference in oxidation of CH4 between the treatments, which ranged from 0.019 μg CH4-C kg -1 day-1 for the HUI treatment to 0.033 CH4-C kg-1 day-1 for the MES treatment. The production of N 2O was 30 μg N2O-N kg-1 day-1 in the MES treatment and >8 times higher compared to the other treatments. The average concentration of NO3- was 2 times higher and significantly greater in the MES treatment than in the HUI treatment, 3 times greater than in the OUT treatment and 10 times greater than in the ARA treatment. It was found that cultivation of soil decreased soil organic matter content, C and N mineralization, but not oxidation of CH4 or production of N2O.
KW - Carbon dynamics
KW - Huisache (Acacia schaffneri)
KW - Mesquite (Prosopis spp.)
KW - Methane
KW - Nitrogen dynamics
UR - http://www.scopus.com/inward/record.url?scp=4644281941&partnerID=8YFLogxK
U2 - 10.1007/s00374-004-0775-x
DO - 10.1007/s00374-004-0775-x
M3 - Artículo
SN - 0178-2762
VL - 40
SP - 252
EP - 259
JO - Biology and Fertility of Soils
JF - Biology and Fertility of Soils
IS - 4
ER -