Understanding N2O emissions in african ecosystems: Assessments from a semi-arid savanna grassland in senegal and sub-tropical agricultural fields in Kenya

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Understanding N2O emissions in african ecosystems : Assessments from a semi-arid savanna grassland in senegal and sub-tropical agricultural fields in Kenya. / Bigaignon, Laurent; Delon, Claire; Ndiaye, Ousmane; Galy-Lacaux, Corinne; Serça, Dominique; Guérin, Frédéric; Tallec, Tiphaine; Merbold, Lutz; Tagesson, Torbern; Fensholt, Rasmus; André, Sylvain; Galliau, Sylvain.

I: Sustainability (Switzerland), Bind 12, Nr. 21, 8875, 01.11.2020, s. 1-26.

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt

Harvard

Bigaignon, L, Delon, C, Ndiaye, O, Galy-Lacaux, C, Serça, D, Guérin, F, Tallec, T, Merbold, L, Tagesson, T, Fensholt, R, André, S & Galliau, S 2020, 'Understanding N2O emissions in african ecosystems: Assessments from a semi-arid savanna grassland in senegal and sub-tropical agricultural fields in Kenya', Sustainability (Switzerland), bind 12, nr. 21, 8875, s. 1-26. https://doi.org/10.3390/su12218875

APA

Bigaignon, L., Delon, C., Ndiaye, O., Galy-Lacaux, C., Serça, D., Guérin, F., Tallec, T., Merbold, L., Tagesson, T., Fensholt, R., André, S., & Galliau, S. (2020). Understanding N2O emissions in african ecosystems: Assessments from a semi-arid savanna grassland in senegal and sub-tropical agricultural fields in Kenya. Sustainability (Switzerland), 12(21), 1-26. [8875]. https://doi.org/10.3390/su12218875

Vancouver

Bigaignon L, Delon C, Ndiaye O, Galy-Lacaux C, Serça D, Guérin F o.a. Understanding N2O emissions in african ecosystems: Assessments from a semi-arid savanna grassland in senegal and sub-tropical agricultural fields in Kenya. Sustainability (Switzerland). 2020 nov. 1;12(21):1-26. 8875. https://doi.org/10.3390/su12218875

Author

Bigaignon, Laurent ; Delon, Claire ; Ndiaye, Ousmane ; Galy-Lacaux, Corinne ; Serça, Dominique ; Guérin, Frédéric ; Tallec, Tiphaine ; Merbold, Lutz ; Tagesson, Torbern ; Fensholt, Rasmus ; André, Sylvain ; Galliau, Sylvain. / Understanding N2O emissions in african ecosystems : Assessments from a semi-arid savanna grassland in senegal and sub-tropical agricultural fields in Kenya. I: Sustainability (Switzerland). 2020 ; Bind 12, Nr. 21. s. 1-26.

Bibtex

@article{f6fe96eb8b9d4dccb881089ac990f743,
title = "Understanding N2O emissions in african ecosystems: Assessments from a semi-arid savanna grassland in senegal and sub-tropical agricultural fields in Kenya",
abstract = "This study is based on the analysis of field-measured nitrous oxide (N2 O) emissions from a Sahelian semi-arid grassland site in Senegal (Dahra), tropical humid agricultural plots in Kenya (Mbita region) and simulations using a 1D model designed for semi arid ecosystems in Dahra. This study aims at improving present knowledge and inventories of N2 O emissions from the African continent. N2 O emissions were larger at the agricultural sites in the Mbita region (range: 0.0 ± 0.0 to 42.1 ± 10.7 ngN m−2 s−1) than at the Dahra site (range: 0.3 ± 0 to 7.4 ± 6.5 ngN m−2 s−1). Soil water and nitrate (NO3−) contents appeared to be the most important drivers of N2 O emissions in Dahra at the seasonal scale in both regions. The seasonal pattern of modelled N2 O emissions is well represented, though the model performed better during the rainy season than between the rainy and dry seasons. This study highlighted that the water-filled pore space threshold recognised as a trigger for N2 O emissions should be reconsidered for semi-arid ecosystems. Based on both measurements and simulated results, an annual N2 O budget was estimated for African savanna/grassland and agricultural land ranging between 0.17–0.26 and 1.15–1.20 TgN per year, respectively.",
keywords = "Chambers, GHG, Modelling, Nitrogen, Tropical ecosystems",
author = "Laurent Bigaignon and Claire Delon and Ousmane Ndiaye and Corinne Galy-Lacaux and Dominique Ser{\c c}a and Fr{\'e}d{\'e}ric Gu{\'e}rin and Tiphaine Tallec and Lutz Merbold and Torbern Tagesson and Rasmus Fensholt and Sylvain Andr{\'e} and Sylvain Galliau",
year = "2020",
month = nov,
day = "1",
doi = "10.3390/su12218875",
language = "English",
volume = "12",
pages = "1--26",
journal = "Sustainability",
issn = "2071-1050",
publisher = "MDPI AG",
number = "21",

}

RIS

TY - JOUR

T1 - Understanding N2O emissions in african ecosystems

T2 - Assessments from a semi-arid savanna grassland in senegal and sub-tropical agricultural fields in Kenya

AU - Bigaignon, Laurent

AU - Delon, Claire

AU - Ndiaye, Ousmane

AU - Galy-Lacaux, Corinne

AU - Serça, Dominique

AU - Guérin, Frédéric

AU - Tallec, Tiphaine

AU - Merbold, Lutz

AU - Tagesson, Torbern

AU - Fensholt, Rasmus

AU - André, Sylvain

AU - Galliau, Sylvain

PY - 2020/11/1

Y1 - 2020/11/1

N2 - This study is based on the analysis of field-measured nitrous oxide (N2 O) emissions from a Sahelian semi-arid grassland site in Senegal (Dahra), tropical humid agricultural plots in Kenya (Mbita region) and simulations using a 1D model designed for semi arid ecosystems in Dahra. This study aims at improving present knowledge and inventories of N2 O emissions from the African continent. N2 O emissions were larger at the agricultural sites in the Mbita region (range: 0.0 ± 0.0 to 42.1 ± 10.7 ngN m−2 s−1) than at the Dahra site (range: 0.3 ± 0 to 7.4 ± 6.5 ngN m−2 s−1). Soil water and nitrate (NO3−) contents appeared to be the most important drivers of N2 O emissions in Dahra at the seasonal scale in both regions. The seasonal pattern of modelled N2 O emissions is well represented, though the model performed better during the rainy season than between the rainy and dry seasons. This study highlighted that the water-filled pore space threshold recognised as a trigger for N2 O emissions should be reconsidered for semi-arid ecosystems. Based on both measurements and simulated results, an annual N2 O budget was estimated for African savanna/grassland and agricultural land ranging between 0.17–0.26 and 1.15–1.20 TgN per year, respectively.

AB - This study is based on the analysis of field-measured nitrous oxide (N2 O) emissions from a Sahelian semi-arid grassland site in Senegal (Dahra), tropical humid agricultural plots in Kenya (Mbita region) and simulations using a 1D model designed for semi arid ecosystems in Dahra. This study aims at improving present knowledge and inventories of N2 O emissions from the African continent. N2 O emissions were larger at the agricultural sites in the Mbita region (range: 0.0 ± 0.0 to 42.1 ± 10.7 ngN m−2 s−1) than at the Dahra site (range: 0.3 ± 0 to 7.4 ± 6.5 ngN m−2 s−1). Soil water and nitrate (NO3−) contents appeared to be the most important drivers of N2 O emissions in Dahra at the seasonal scale in both regions. The seasonal pattern of modelled N2 O emissions is well represented, though the model performed better during the rainy season than between the rainy and dry seasons. This study highlighted that the water-filled pore space threshold recognised as a trigger for N2 O emissions should be reconsidered for semi-arid ecosystems. Based on both measurements and simulated results, an annual N2 O budget was estimated for African savanna/grassland and agricultural land ranging between 0.17–0.26 and 1.15–1.20 TgN per year, respectively.

KW - Chambers

KW - GHG

KW - Modelling

KW - Nitrogen

KW - Tropical ecosystems

U2 - 10.3390/su12218875

DO - 10.3390/su12218875

M3 - Journal article

AN - SCOPUS:85094578084

VL - 12

SP - 1

EP - 26

JO - Sustainability

JF - Sustainability

SN - 2071-1050

IS - 21

M1 - 8875

ER -

ID: 251635782