TY - JOUR
T1 - Nitrous oxide emissions from soils of the semi-arid highlands of Durango, Mexico
T2 - A laboratory study
AU - Herrera-Arreola, Guillermo
AU - Vasquez-Murrieta, Maria Soledad
AU - Cruz-Mondragon, Carlos
AU - Van Cleemput, Oswald
AU - Dendooven, Luc
N1 - Funding Information:
The authors thank J. Vermeulen, E. Gillis, and D. Demeyer for technical assistance. This work was done during a working visit at the Laboratory of Applied Physical Chemistry, Gent University, Belgium. The research was funded by the Flemish Interuniversity Council-Own Initiatives (VLIR-EI) Belgium and Cinvestav. M.S.V.-M., C.C.-M., G.H.-A., and L.D. received grant-aided support from VLIR-EI. M.S.V.-M. and G.H.-A. also received grant-aided support from Consejo Nacional de Ciencia y Tecnología (CONACyT) México.
PY - 2008/7
Y1 - 2008/7
N2 - Approximately 60% of Mexico (1.973 × 106 km2) is arid or semi-arid with vegetation dominated by N2 fixing shrubs, such as mesquite (Prosopis juliflora). Little is known, however, how these ecosystems contribute to production of nitrous oxide (N2O), a known greenhouse gas. We investigated this by adding inorganic fertilizer (20 mg ammonium (NH4+) N kg-1 soil) to soil at different water contents (40%, 60%, 80%, and 100% of water-holding capacity (WHC)) sampled under the canopy of mesquite and outside its canopy, while production of carbon dioxide (CO2) and nitrous oxide (N2O), and dynamics NH4+, nitrite (NO2-), and nitrate (NO3-)) were monitored. The CO2 production rate was 1.5 times larger for soil sampled under the canopy of mesquite compared to soil sampled outside the canopy of shrubs and lower in soil incubated at 100% WHC compared to the other treatments. Production of N2O increased with increased water content within the first day, but decreased in soil at 80% and 100% WHC thereafter. The production of N2O was 1.9 times larger for soil sampled under the canopy of mesquite compared to soil sampled outside its canopy. The addition of 20 mg NH4+-N increased production of N2O 1.8-fold. It was found that the cumulative production of N2O was larger from soil sampled under the canopy of mesquite than outside it when amended with inorganic fertilizer and increased with increased water content of the soil within a day. The relationship between the emission of CO2 and N2O, water-holding capacity are discussed.
AB - Approximately 60% of Mexico (1.973 × 106 km2) is arid or semi-arid with vegetation dominated by N2 fixing shrubs, such as mesquite (Prosopis juliflora). Little is known, however, how these ecosystems contribute to production of nitrous oxide (N2O), a known greenhouse gas. We investigated this by adding inorganic fertilizer (20 mg ammonium (NH4+) N kg-1 soil) to soil at different water contents (40%, 60%, 80%, and 100% of water-holding capacity (WHC)) sampled under the canopy of mesquite and outside its canopy, while production of carbon dioxide (CO2) and nitrous oxide (N2O), and dynamics NH4+, nitrite (NO2-), and nitrate (NO3-)) were monitored. The CO2 production rate was 1.5 times larger for soil sampled under the canopy of mesquite compared to soil sampled outside the canopy of shrubs and lower in soil incubated at 100% WHC compared to the other treatments. Production of N2O increased with increased water content within the first day, but decreased in soil at 80% and 100% WHC thereafter. The production of N2O was 1.9 times larger for soil sampled under the canopy of mesquite compared to soil sampled outside its canopy. The addition of 20 mg NH4+-N increased production of N2O 1.8-fold. It was found that the cumulative production of N2O was larger from soil sampled under the canopy of mesquite than outside it when amended with inorganic fertilizer and increased with increased water content of the soil within a day. The relationship between the emission of CO2 and N2O, water-holding capacity are discussed.
KW - C and N dynamics
KW - Inorganic N fertilizer
KW - Mesquite (Prosopis juliflora)
KW - Production of NO
KW - Water content
UR - http://www.scopus.com/inward/record.url?scp=47549095676&partnerID=8YFLogxK
U2 - 10.1080/15324980802182964
DO - 10.1080/15324980802182964
M3 - Artículo
SN - 1532-4982
VL - 22
SP - 179
EP - 194
JO - Arid Land Research and Management
JF - Arid Land Research and Management
IS - 3
ER -