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International Journal of Environment Science and Technology
Center for Environment and Energy Research and Studies (CEERS)
ISSN: 1735-1472 EISSN: 1735-1472
Vol. 13, No. 1, 2016, pp. 179-186
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Bioline Code: st16017
Full paper language: English
Document type: Research Article
Document available free of charge
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International Journal of Environment Science and Technology, Vol. 13, No. 1, 2016, pp. 179-186
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Soil Nitrous oxide and Carbon dioxide emissions following incorporation of above- and below-ground biomass of green bean
Shaaban, M.; Peng, Q.; Hu, R.; Lin, S. & Zhao, J.
Abstract
Information on soil N2O and CO2 emissions
from above- and below-ground biomass of legume crops is
limited in scientific literature. Therefore, a laboratory study
was conducted to evaluate the differences in soil N2O and
CO2 emissions from the above- and below-ground biomass
of green bean. Leave and shoot (LS) and root nodule (Nod)
of green bean were incorporated into soil and incubated for
53 days. N2O and CO2 emissions were measured
throughout the 53-day study period. Incorporation of
organic residues significantly (p ≤ 0.05) increased N2O
and CO2 emissions. However, the Nod treatment yielded
higher emissions of N2O as compared to LS treatment.
Cumulative N2O emissions were 13-fold and fourfold in
Nod and LS treatment as compared to the control,
respectively. CO2 emissions were higher in LS treatment
than that of Nod treatment. Cumulative CO2 emissions
were 2.15-fold and 1.15-fold in LS and Nod treatments as
compared to the control, respectively. The results of current
study suggest that below-ground biomass of legume
crops produces higher N2O emissions while CO2 emissions
were higher in above-ground biomass.
Keywords
Carbon dioxide; Crop straw; Dissolved organic carbon; Nitrous oxide; Organic matter; Root residue
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