Seasonal nitrous oxide emissions from different land uses and their controlling factors in a tropical riparian ecosystem

Kachenchart, Boonlue; Jones, Davey L.; Gajaseni, Nantana; Edwards‐Jones, Gareth; Limsakul, Atsamon

doi:10.1016/j.agee.2012.05.008

Cited by 28 publications

(30 citation statements)

References 84 publications

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“…Nitrifier-induced denitrification as a potential significant source of agricultural N 2 O in alkaline soils Previous studies have focused on quantifying N 2 O emission rates and understanding the main environmental factors that influence the patterns of soil N 2 O fluxes (Kachenchart et al, 2012;Bell et al, 2015), but limited effort was devoted to distinguishing the relative importance of multiple biological pathways for N 2 O production. Several approaches such as acetylene inhibition (Offre et al, 2009;Zhong et al, 2014), N 2 O isotopomer analysis (Sutka et al, 2006;Ishii et al, 2014) and 15 N tracer (Baggs, 2011) have shed some light into the relative contributions of nitrification and heterotrophic denitrification to soil N 2 O production.…”

Section: Discussionmentioning

confidence: 99%

Nitrifier‐induced denitrification is an important source of soil nitrous oxide and can be inhibited by a nitrification inhibitor 3,4‐dimethylpyrazole phosphate

Shi

Zhu‐Barker

et al. 2017

Environmental Microbiology

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Soil ecosystem represents the largest contributor to global nitrous oxide (N O) production, which is regulated by a wide variety of microbial communities in multiple biological pathways. A mechanistic understanding of these N O production biological pathways in complex soil environment is essential for improving model performance and developing innovative mitigation strategies. Here, combined approaches of the N- O labelling technique, transcriptome analysis, and Illumina MiSeq sequencing were used to identify the relative contributions of four N O pathways including nitrification, nitrifier-induced denitrification (nitrifier denitrification and nitrification-coupled denitrification) and heterotrophic denitrification in six soils (alkaline vs. acid soils). In alkaline soils, nitrification and nitrifier-induced denitrification were the dominant pathways of N O production, and application of the nitrification inhibitor 3,4-dimethylpyrazole phosphate (DMPP) significantly reduced the N O production from these pathways; this is probably due to the observed reduction in the expression of the amoA gene in ammonia-oxidizing bacteria (AOB) in the DMPP-amended treatments. In acid soils, however, heterotrophic denitrification was the main source for N O production, and was not impacted by the application of DMPP. Our results provide robust evidence that the nitrification inhibitor DMPP can inhibit the N O production from nitrifier-induced denitrification, a potential significant source of N O production in agricultural soils.

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Section: Discussionmentioning

confidence: 99%

Nitrifier‐induced denitrification is an important source of soil nitrous oxide and can be inhibited by a nitrification inhibitor 3,4‐dimethylpyrazole phosphate

Shi

Zhu‐Barker

et al. 2017

Environmental Microbiology

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“…References A (Flooding): Increased N 2 O pulses from riparian zones/floodplains/wetlands follow flooding (Baker and Vervier, ; Machefert and Dise, ; Hernandez and Mitsch, , ; Sovik et al . ; Kachenchart et al ., ; Huang et al ., ). CH 4 is controlled more by inundation time than flood pulses (e.g., Zou et al ., ; Altor and Mitsch, ; Pennock et al ., ; Sha et al ., ).…”

Section: Land Use and Climate Variability Amplify Watershed Greenhousmentioning

confidence: 99%

“…References C (Organic Carbon): Several studies have found strong relationships with organic C and N 2 O in riparian zones/floodplains/wetlands (Maag et al ., ; Baker and Vervier, ; Sovik et al . ; DeSimone et al ., ; Kachenchart et al ., ) and in streams/rivers (Harrison and Matson, ; Tortosa et al ., ). Similarly, riparian wetlands and streams with increased organic carbon availability tend to have high CH 4 production (Ambus and Christensen, ; Bianchi et al ., ; Silvennoinen et al ., ; Baulch et al ., ; Mander et al ., ; Samaritani et al ., ; Sha et al ., ; Tortosa et al ., ).…”

Section: Land Use and Climate Variability Amplify Watershed Greenhousmentioning

confidence: 99%

Land Use and Climate Variability Amplify Carbon, Nutrient, and Contaminant Pulses: A Review with Management Implications

Kaushal

Mayer

Vidon

et al. 2014

J American Water Resour Assoc

173

112

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Nonpoint source pollution from agriculture and urbanization is increasing globally at the same time climate extremes have increased in frequency and intensity. We review >200 studies of hydrologic and gaseous fluxes and show how the interaction between land use and climate variability alters magnitude and frequency of carbon, nutrient, and greenhouse gas pulses in watersheds. Agricultural and urban watersheds respond similarly to climate variability due to headwater alteration and loss of ecosystem services to buffer runoff and temperature changes. Organic carbon concentrations/exports increase and organic carbon quality changes with runoff. Nitrogen and phosphorus exports increase during floods (sometimes by an order of magnitude) and decrease during droughts. Relationships between annual runoff and nitrogen and phosphorus exports differ across land use. CH 4 and N 2 O pulses in riparian zones/floodplains predominantly increase with: flooding, warming, low oxygen, nutrient enrichment, and organic carbon. CH 4 , N 2 O, and CO 2 pulses in streams/rivers increase due to similar factors but effects of floods are less known compared to base flow/droughts. Emerging questions include: (1) What factors influence lag times of contaminant pulses in response to extreme events? (2) What drives resistance/resilience to hydrologic and gaseous pulses? We conclude with eight recommendations for managing watershed pulses in response to interactive effects of land use and climate change.

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“…Bouwman et al (2013) estimated that riparian zones alone contributed 0.9 Tg N 2 O-N yr -1 in 2000, a disproportionately high N 2 O flux relative to their surface area. Measured N 2 O fluxes span a wide range in riparian ecosystems including agricultural fields (Hefting et al 2006;Scheer et al 2008;Li et al 2013), riparian zones with high nitrate (Soosaar et al 2011), wetlands (Hernandez and Mitsch 2006), tropical zones (Couwenberg et al 2012;Kachenchart et al 2012) and grasslands (Yan-Fen et al 2003;Verchot et al 2006;Carter 2007).…”

Section: Anthropogenic Activity Has Drastically Altered the Global Nimentioning

confidence: 99%

Nitrous oxide fluxes and dissolved N gases (N2 and N2O) within riparian zones along the agriculturally impacted San Joaquin River

Hinshaw

Dahlgren

2016

Nutr Cycl Agroecosyst

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TitleNitrous oxide fluxes and dissolved N gases (N2 and N2O) within riparian zones along the agriculturally impacted San Joaquin River ? and NO 3 -, while benthic N 2 O fluxes were regulated by variations in dissolved oxygen and river flow. Higher fluxes in the riparian soils in 2011 were attributed to several months of flooding that significantly impacted groundwater tables and nutrient availability. Dissolved N 2 O from groundwater within the riparian zones was not found to be a significant factor contributing to atmospheric fluxes. These results suggest that riparian zones within the agriculturally impacted San Joaquin River were a significant source of N 2 O when elevated NO 3 -was present. Different controlling factors for fluxes within benthic sediments suggested that riparian vegetation did not play a role in NO 3 -concentrations or fluxes within the surface water.

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Seasonal nitrous oxide emissions from different land uses and their controlling factors in a tropical riparian ecosystem

Cited by 28 publications

References 84 publications

Nitrifier‐induced denitrification is an important source of soil nitrous oxide and can be inhibited by a nitrification inhibitor 3,4‐dimethylpyrazole phosphate

Nitrifier‐induced denitrification is an important source of soil nitrous oxide and can be inhibited by a nitrification inhibitor 3,4‐dimethylpyrazole phosphate

Land Use and Climate Variability Amplify Carbon, Nutrient, and Contaminant Pulses: A Review with Management Implications

Nitrous oxide fluxes and dissolved N gases (N2 and N2O) within riparian zones along the agriculturally impacted San Joaquin River

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