Simultaneous records of methane and nitrous oxide emissions in rice-based cropping systems under rainfed conditions

Abao, E. B.; Bronson, K. F.; Wassmann, R.; Singh, Umesh Kumar

doi:10.1007/978-94-010-0898-3_12

Cited by 27 publications

(34 citation statements)

References 15 publications

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“…The NO 3 − is denitrifi ed when the soil becomes saturated by rain or irrigation . Rain in the fallow period between rice crops stimulates the emission of N 2 O (Bronson et al, 1997c;Abao et al, 2000), which is associated with nitrifi cation-denitrifi cation. Appreciable NO 3 − can accumulate during the fallow period particularly when periodic rains help maintain a favorable soil water content for nitrifi cation .…”

Section: Nitrifi Cation-denitrifi Cationmentioning

confidence: 99%

Nitrogen Transformations in Submerged Soils

Buresh

Reddy

Kessel

2015

Agronomy Monographs

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Soils with continuous or intermitt ent submergence by water are widely distributed worldwide. They occur in a range of ecosystems including rice (Oryza sativa L.) fi elds, wetlands, estuaries, and fl oodplains. Such ecosystems oft en occur at low elevation in the landscape and are poorly drained with high retention of water. In addition, some upland areas with poor drainage can undergo periodic submergence and soil saturation. Moreover, the sediments in ocean, lake, and stream bottoms have similar biogeochemical and physical characteristics and N transformations as submerged agricultural soils.Rice fi elds surrounded by earthen levees to retain rain and irrigation water and ensure soil submergence are one of the world's major agricultural ecosystems. Rice is a staple food for nearly half the world's population, and about 95% of the global rice production occurs on fi elds with soil submerged during at least part of the rice-cropping period. The sustained productivity of this rice ecosystem, which ensures production of suffi cient food for a growing world population, relies heavily on the input and management of N.Nitrogen transformations in submerged soils are markedly diff erent from those in drained, aerated soils. These diff erences aff ect the prevalent soil microorganisms and microbial activities and the turnover, availabilility, and losses of N. To deal with the diff erences in N transformations between submerged and drained soils it is necessary to understand the biogeochemical conditions existing in submerged soils. This chapter is an update of an earlier review by Patrick (1982).

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Section: Nitrifi Cation-denitrifi Cationmentioning

confidence: 99%

Nitrogen Transformations in Submerged Soils

Buresh

Reddy

Kessel

2015

Agronomy Monographs

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“…Rice paddies have been identified as one of the major sources of atmospheric CH 4 , contributing about 10-15% to global CH 4 emissions (Neue 1993). Rice paddies are also known to emit high N 2 O fluxes under certain water management regimes (Bronson et al 1997;Zheng et al 1997;Cai et al 1999;Abao et al 2000). Agricultural soils are subjected to a great deal of management practices including tillage, fertilization, irrigation, weeding and manure amendments.…”

Section: Introductionmentioning

confidence: 99%

Field Validation of DNDC Model for Methane and Nitrous Oxide Emissions from Rice-based Production Systems of India

Babu

Frolking

et al. 2006

Nutr Cycl Agroecosyst

115

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The DNDC (DeNitrification and DeComposition) model was tested against experimental data on CH 4 and N 2 O emissions from rice fields at different geographical locations in India. There was a good agreement between the simulated and observed values of CH 4 and N 2 O emissions. The difference between observed and simulated CH 4 emissions in all sites ranged from À11.6 to 62.5 kg C ha À1 season À1 . Most discrepancies between simulated and observed seasonal fluxes were less than 20% of the field estimate of the seasonal flux. The relative deviation between observed and simulated cumulative N 2 O emissions ranged from À237.8 to 28.6%. However, some discrepancies existed between observed and simulated seasonal patterns of CH 4 and N 2 O emissions. The model simulated zero N 2 O emissions from continuously flooded rice fields and poorly simulated CH 4 emissions from Allahabad site. For all other simulated cases, the model satisfactorily simulated the seasonal variations in greenhouse gas emission from paddy fields with different land management. The model also simulated the C and N balances in all the sites, including other gas fluxes, viz. CO 2 , NO, NO 2 , N 2 and NH 3 emissions. Sensitivity tests for CH 4 indicate that soil texture and pH significantly influenced the CH 4 emission. Changes in organic C content had a moderate influence on CH 4 emission on these sites. Introducing the mid-season drainage reduced CH 4 emissions significantly. Process-based biogeochemical modeling, as with DNDC, can help in identifying strategies for optimizing resource use, increasing productivity, closing yield gaps and reducing adverse environmental impacts.

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“…Field measurements of CH 4 and N 2 O emissions from drained paddy soils for upland crop cultivation were conducted in some previous studies (e.g. Abao et al 2000;Nishimura et al 2005aNishimura et al , 2008Yao et al 2010). …”

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confidence: 99%

“…For example, Abao et al (2000) conducted a simultaneous measurement of CH 4 and N 2 O fluxes in fields with alternate cropping of paddy rice and upland cowpea/wheat. They showed relatively low CH 4 emissions during the paddy rice cultivation period, ranging 707-3440 mg CH 4 m À2 period…”

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confidence: 99%

Combined emission of CH₄and N₂O from a paddy field was reduced by preceding upland crop cultivation

Nishimura

Akiyama

Sudo

et al. 2011

Soil Science and Plant Nutrition

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Since crop rotation between paddy rice and upland crops is widely conducted in Japan and other Asian countries, the effect of crop rotation on greenhouse gas emission should be clarified. In this study, methane (CH 4 ), although the differences were not statistically significant. The soil reduction/oxidation potential (Eh) in the UR plots was higher than that in the PR plots in 2004. However, no distinctive differences in soil Eh among the three cropping systems were found in 2005. In the spring of 2004, the soil iron (Fe) content determined by extraction with dithioniteethylenediaminetetraacetic acid (EDTA) solution was higher in the UR plots than in the PR and SW plots. However, no significant differences in Fe content among the three cropping systems were found in the spring of 2002 and 2005. The application of a relatively small amount of residue from the upland rice (c. 30% of that from the paddy rice) and the removal of all aboveground crop residues of soybean and wheat before paddy rice cultivation in 2004 could have contributed significantly to the low CH 4 emissions in the UR and SW plots. In addition, change in the form of soil Fe during the preceding periods with upland crop cultivation may also have been related to the decreases in CH 4 emission. The cumulative N 2 O emissions ranged from 39 to 99 mg N m À2 y À1, and showed no significant difference among the three cropping systems in 2004 and 2005. These results indicate that the combined CH 4 and N 2 O emission from paddy soil is reduced by the introduction of the preceding upland crop cultivation when crop residue from the previous upland crop is small or removed before paddy rice cultivation, although this effect was expected only for one year just after the land use change from upland crop cultivation to paddy rice cultivation.

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Simultaneous records of methane and nitrous oxide emissions in rice-based cropping systems under rainfed conditions

Cited by 27 publications

References 15 publications

Nitrogen Transformations in Submerged Soils

Nitrogen Transformations in Submerged Soils

Field Validation of DNDC Model for Methane and Nitrous Oxide Emissions from Rice-based Production Systems of India

Combined emission of CH₄and N₂O from a paddy field was reduced by preceding upland crop cultivation

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Simultaneous records of methane and nitrous oxide emissions in rice-based cropping systems under rainfed conditions

Cited by 27 publications

References 15 publications

Nitrogen Transformations in Submerged Soils

Nitrogen Transformations in Submerged Soils

Field Validation of DNDC Model for Methane and Nitrous Oxide Emissions from Rice-based Production Systems of India

Combined emission of CH4and N2O from a paddy field was reduced by preceding upland crop cultivation

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Combined emission of CH₄and N₂O from a paddy field was reduced by preceding upland crop cultivation