Abstract. Erosion is an Earth system process that transports carbon laterally across the land surface and is currently accelerated by anthropogenic activities. Anthropogenic land cover change has accelerated soil erosion rates by rainfall and runoff substantially, mobilizing vast quantities of soil organic carbon (SOC) globally. At timescales of decennia to millennia this mobilized SOC can significantly alter previously estimated carbon emissions from land use change (LUC). However, a full understanding of the impact of erosion on land\u2013atmosphere carbon exchange is still missing. The aim of this study is to better constrain the terrestrial carbon fluxes by developing methods compatible with land surface models (LSMs) in order to explicitly represent the links between soil erosion by rainfall and runoff and carbon dynamics. For this we use an emulator that represents the carbon cycle of a LSM, in combination with the Revised Universal Soil Loss Equation (RUSLE) model. We applied this modeling framework at the global scale to evaluate the effects of potential soil erosion (soil removal only) in the presence of other perturbations of the carbon cycle: elevated atmospheric CO2, climate variability, and LUC. We find that over the period AD\u20091850\u20132005 acceleration of soil erosion leads to a total potential SOC removal flux of 74\u00b118\u2009Pg\u2009C, of which 79\u2009%\u201385\u2009% occurs on agricultural land and grassland. Using our best estimates for soil erosion we find that including soil erosion in the SOC-dynamics scheme results in an increase of 62\u2009% of the cumulative loss of SOC over 1850\u20132005 due to the combined effects of climate variability, increasing atmospheric CO2 and LUC. This additional erosional loss decreases the cumulative global carbon sink on land by 2\u2009Pg of carbon for this specific period, with the largest effects found for the tropics, where deforestation and agricultural expansion increased soil erosion rates significantly. We conclude that the potential effect of soil erosion on the global SOC stock is comparable to the effects of climate or LUC. It is thus necessary to include soil erosion in assessments of LUC and evaluations of the terrestrial carbon cycle.
", "keywords": ["[SDE] Environmental Sciences", "2. Zero hunger", "QE1-996.5", "550", "Ecologie", "G\u00e9ologie et min\u00e9ralogie", "Ecology", "0207 environmental engineering", "Geology", "02 engineering and technology", "Evolution des esp\u00e8ces", "15. Life on land", "01 natural sciences", "[SDE.BE] Environmental Sciences/Biodiversity and Ecology", "Life", "13. Climate action", "QH501-531", "[SDE]Environmental Sciences", "14. Life underwater", "[SDE.BE]Environmental Sciences/Biodiversity and Ecology", "QH540-549.5", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://dipot.ulb.ac.be/dspace/bitstream/2013/279784/1/doi_263411.pdf"}, {"href": "https://doi.org/10.5194/bg-15-4459-2018"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Biogeosciences", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.5194/bg-15-4459-2018", "name": "item", "description": "10.5194/bg-15-4459-2018", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.5194/bg-15-4459-2018"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-07-20T00:00:00Z"}}, {"id": "10.57745/2V46MF", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-26T16:24:09Z", "type": "Dataset", "title": "Unit\u00e9 Exp\u00e9rimentale d'Epoisses : Donn\u00e9es collect\u00e9es dans le cadre des \u00e9tudes de sol du r\u00e9seau CAREX", "description": "Ces donn\u00e9es ont \u00e9t\u00e9 cr\u00e9\u00e9es pour la caract\u00e9risation des sols et de leurs propri\u00e9t\u00e9s de l'Unit\u00e9 Exp\u00e9rimentale INRAE d'Epoisse (commune de Breteni\u00e8re, C\u00f4te d'Or, France). L\u2019\u00e9tude a port\u00e9 sur 120 ha. Les donn\u00e9es contiennent des informations ponctuelles issues d\u2019observations et d\u2019analyses sur 92 sondages et 12 profils p\u00e9dologiques. Le jeu de donn\u00e9es contient \u00e9galement des donn\u00e9es surfaciques : r\u00e9sistivit\u00e9s \u00e9lectriques spatiales, carte des types de sols classifi\u00e9s par Unit\u00e9s Typologiques de Sols (UTS).", "keywords": ["Earth and Environmental Science", "pH du sol", "structure du sol", "potentiel matriciel", "masse volumique du sol", "horizon", "type de sol", "carbonate", "granulometrie du sol", "carbone organique du sol", "propriet\u00e9s physico-chimiques du sol", "g\u00e9ologie", "azote total", "r\u00e9sisitivit\u00e9 \u00e9lectrique", "carte p\u00e9dologique", "r\u00e9tention hydrique du sol", "propriet\u00e9 hydrique du sol", "capacit\u00e9 au champ", "teneur en argile", "capacit\u00e9 d \u00e9change cationique", "carbone total", "hydromorphie", "point fl\u00e9trissement permanent", "Earth and Environmental Sciences", "propriet\u00e9s physico chimiques du sol", "r\u00e9f\u00e9rentiel p\u00e9dologique", "unit\u00e9 typologique de sol UTS", "Environmental Research", "Natural Sciences", "capacit\u00e9 d'\u00e9change cationique", "texture", "occupation du sol", "Geosciences"], "contacts": [{"organization": "Seger, Maud, Girot, Ghislain, Mistou, Marie-No\u00ebl, Laloua, Didier, Le Lay, Christian, Gaillard, Herv\u00e9, Ubertosi, Marjorie, Coffin, Arnaud, Hugard, Rodolphe,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.57745/2V46MF"}, {"rel": "self", "type": "application/geo+json", "title": "10.57745/2V46MF", "name": "item", "description": "10.57745/2V46MF", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.57745/2V46MF"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2023-01-01T00:00:00Z"}}, {"id": "10.57745/HRCQL8", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-26T16:24:09Z", "type": "Dataset", "title": "Unite Exp\u00e9rimentale RGCO de Ploudaniel : Donn\u00e9es collect\u00e9es dans le cadre des \u00e9tudes de sol du r\u00e9seau CAREX", "description": "Ces donn\u00e9es ont \u00e9t\u00e9 cr\u00e9\u00e9es pour la caract\u00e9risation des sols et de leurs propri\u00e9t\u00e9s de l'Unit\u00e9 Exp\u00e9rimentale INRAE RGCO de Ploudaniel. L\u2019\u00e9tude a port\u00e9 sur 67 ha. Les donn\u00e9es contiennent des informations ponctuelles issues d\u2019observations et d\u2019analyses sur 69 sondages et 14 profils p\u00e9dologiques. Le jeu de donn\u00e9es contient \u00e9galement des donn\u00e9es surfaciques : r\u00e9sistivit\u00e9s \u00e9lectriques spatiales, carte des types de sols classifi\u00e9s par Unit\u00e9s Typologiques de Sols (UTS).", "keywords": ["pH du sol", "structure du sol", "potentiel matriciel", "masse volumique du sol", "horizon", "type de sol", "carbonate", "carbone organique du sol", "propriet\u00e9s physico-chimiques du sol", "g\u00e9ologie", "phosphore du sol", "azote total", "point de fl\u00e9trissement permanent", "carte p\u00e9dologique", "r\u00e9tention hydrique du sol", "propriet\u00e9 hydrique du sol", "capacit\u00e9 au champ", "teneur en argile", "carbone total", "granulom\u00e9trie du sol", "hydromorphie", "Earth and Environmental Sciences", "r\u00e9f\u00e9rentiel p\u00e9dologique", "unit\u00e9 typologique de sol UTS", "r\u00e9sisitivit\u00e9 \u00e9l\u00e9ctrique", "capacit\u00e9 d'\u00e9change cationique", "texture", "occupation du sol"], "contacts": [{"organization": "Mistou Marie-Noel, Girot Ghislain, Seger Maud, Laloua Didier, Le Lay Christian, Gaillard Herv\u00e9, Heller Renaud, Sherif Rehanna, Kermarrec Dominique, Levardois Kevin, Chauvin Jean-Eric,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.57745/HRCQL8"}, {"rel": "self", "type": "application/geo+json", "title": "10.57745/HRCQL8", "name": "item", "description": "10.57745/HRCQL8", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.57745/HRCQL8"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-01-01T00:00:00Z"}}, {"id": "2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/279784", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-26T16:25:29Z", "type": "Journal Article", "created": "2018-07-20", "title": "Global soil organic carbon removal by water erosion under climate change and land use change during AD\u20091850\u20132005", "description": "Abstract. Erosion is an Earth system process that transports carbon laterally across the land surface and is currently accelerated by anthropogenic activities. Anthropogenic land cover change has accelerated soil erosion rates by rainfall and runoff substantially, mobilizing vast quantities of soil organic carbon (SOC) globally. At timescales of decennia to millennia this mobilized SOC can significantly alter previously estimated carbon emissions from land use change (LUC). However, a full understanding of the impact of erosion on land\u2013atmosphere carbon exchange is still missing. The aim of this study is to better constrain the terrestrial carbon fluxes by developing methods compatible with land surface models (LSMs) in order to explicitly represent the links between soil erosion by rainfall and runoff and carbon dynamics. For this we use an emulator that represents the carbon cycle of a LSM, in combination with the Revised Universal Soil Loss Equation (RUSLE) model. We applied this modeling framework at the global scale to evaluate the effects of potential soil erosion (soil removal only) in the presence of other perturbations of the carbon cycle: elevated atmospheric CO2, climate variability, and LUC. We find that over the period AD\u20091850\u20132005 acceleration of soil erosion leads to a total potential SOC removal flux of 74\u00b118\u2009Pg\u2009C, of which 79\u2009%\u201385\u2009% occurs on agricultural land and grassland. Using our best estimates for soil erosion we find that including soil erosion in the SOC-dynamics scheme results in an increase of 62\u2009% of the cumulative loss of SOC over 1850\u20132005 due to the combined effects of climate variability, increasing atmospheric CO2 and LUC. This additional erosional loss decreases the cumulative global carbon sink on land by 2\u2009Pg of carbon for this specific period, with the largest effects found for the tropics, where deforestation and agricultural expansion increased soil erosion rates significantly. We conclude that the potential effect of soil erosion on the global SOC stock is comparable to the effects of climate or LUC. It is thus necessary to include soil erosion in assessments of LUC and evaluations of the terrestrial carbon cycle.
", "keywords": ["[SDE] Environmental Sciences", "2. Zero hunger", "QE1-996.5", "550", "Ecologie", "G\u00e9ologie et min\u00e9ralogie", "Ecology", "0207 environmental engineering", "Geology", "02 engineering and technology", "Evolution des esp\u00e8ces", "15. Life on land", "01 natural sciences", "[SDE.BE] Environmental Sciences/Biodiversity and Ecology", "Life", "13. Climate action", "QH501-531", "[SDE]Environmental Sciences", "14. Life underwater", "[SDE.BE]Environmental Sciences/Biodiversity and Ecology", "QH540-549.5", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://dipot.ulb.ac.be/dspace/bitstream/2013/279784/1/doi_263411.pdf"}, {"href": "https://doi.org/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/279784"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Biogeosciences", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/279784", "name": "item", "description": "2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/279784", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/279784"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-07-20T00:00:00Z"}}, {"id": "2268/234713", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-26T16:25:39Z", "type": "Journal Article", "created": "2019-04-14", "title": "Dynamics of greenhouse gases in groundwater: hydrogeological and hydrogeochemical controls", "description": "Abstract In this study the variability of greenhouse gases (GHGs) concentrations along lateral and vertical dimensions of the chalk aquifer located in the eastern part of Belgium was examined in order to understand its dependence on hydrogeological and hydrogeochemical conditions. Groundwater samples from 29 wells/piezometers were analyzed for concentrations of nitrous oxide (N2O), carbon dioxide (CO2), methane (CH4), major and minor elements and stable isotopes of nitrate (NO3\u2212), nitrous oxide (N2O), sulfate (SO42\u2212) and boron (B). For lateral investigations, four zones with different environmental settings were identified (southern, central, north-eastern and northern). Groundwater was oversaturated with GHGs with respect to its equilibrium concentrations with the atmosphere in all zones, except the northern one, undersaturated in N2O (0.07\u202f\u00b1\u202f0.08\u202f\u03bcgN/L vs. 0.3\u202f\u03bcgN/L). Vertical dimension studies showed the decrease in CO2 concentration and significant changes in both isotope signatures and concentration of N2O with depth. The production of N2O could be attributed to a combination of nitrification and denitrification processes occurring at different depths. CO2 concentration is controlled by the process of dissolution of carbonate minerals which constitute aquifer geology. CH4 is produced due to methanogenesis in deeper parts of the aquifer, though its thermogenic origin is also possible. Differences in hydrogeochemical settings and changing intensity of biogeochemical processes across the area and with depth have considerable effect on GHGs concentrations. Thus, before estimating GHGs fluxes at the groundwater\u2013river interface insights obtained from larger-scale investigations are required in order to identify the representative spatial zones which govern GHGs emissions.", "keywords": ["2. Zero hunger", "Stable isotope analysis", "Physique", " chimie", " math\u00e9matiques & sciences de la terre", "Agriculture", "01 natural sciences", "Geological", " petroleum & mining engineering", "6. Clean water", "Engineering", " computing & technology", "Ing\u00e9nierie", " informatique & technologie", "Sciences de la terre & g\u00e9ographie physique", "Indirect emissions", "Physical", " chemical", " mathematical & earth Sciences", "13. Climate action", "Earth sciences & physical geography", "G\u00e9ologie", " ing\u00e9nierie du p\u00e9trole & des mines", "Greenhouse gases (GHGs)", "Groundwater", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://orbi.uliege.be/bitstream/2268/234713/1/GHG%20Geer%20Appl.%20Geochem%202019%20VF.pdf"}, {"href": "https://doi.org/2268/234713"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Applied%20Geochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2268/234713", "name": "item", "description": "2268/234713", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2268/234713"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-06-01T00:00:00Z"}}, {"id": "2268/239471", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-26T16:25:39Z", "type": "Report", "title": "Analysing N sources and transformation processes in groundwater under agricultural areas (chalk aquifer, Belgium)", "description": "Transfer of GHGs in the soil \u2013 vadose zone \u2013 groundwater \u2013 river \u2013 atmosphere system", "keywords": ["Sciences de l\u2019environnement & \u00e9cologie", "Physique", " chimie", " math\u00e9matiques & sciences de la terre", "Life sciences", "6. Clean water", "Geological", " petroleum & mining engineering", "Engineering", " computing & technology", "Ing\u00e9nierie", " informatique & technologie", "Sciences de la terre & g\u00e9ographie physique", "Physical", " chemical", " mathematical & earth Sciences", "13. Climate action", "Environmental sciences & ecology", "Earth sciences & physical geography", "Sciences du vivant", "G\u00e9ologie", " ing\u00e9nierie du p\u00e9trole & des mines"], "contacts": [{"organization": "Nikolenko, Olha, Borges, Alberto, Orban, Philippe, Brouy\u00e8re, Serge,", "roles": ["creator"]}]}, "links": [{"href": "https://orbi.uliege.be/bitstream/2268/239471/1/INSPIRATIONBulletin.pdf"}, {"href": "https://doi.org/2268/239471"}, {"rel": "self", "type": "application/geo+json", "title": "2268/239471", "name": "item", "description": "2268/239471", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2268/239471"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-09-01T00:00:00Z"}}, {"id": "2268/215300", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-26T16:25:39Z", "type": "Journal Article", "created": "2017-10-23", "title": "Isotopic composition of nitrogen species in groundwater under agricultural areas: A review", "description": "This work reviews applications of stable isotope analysis to the studies of transport and transformation of N species in groundwater under agricultural areas. It summarizes evidence regarding factors affecting the isotopic composition of NO3-, NH4+ and N2O in subsurface, and discusses the use of 11B, 18O, 13C, 34S, 87Sr/86Sr isotopes to support the analysis of \u03b415N values. The isotopic composition of NO3-, NH4+ and N2O varies depending on their sources and dynamics of N cycle processes. The reported \u03b415N-NO3- values for sources of NO3- are: soil organic N - +3\u2030-+8\u2030, mineral fertilizers - -8\u2030-+7\u2030; manure/household waste - +5\u2030 to +35\u2030. For NH4+ sources, the isotopic signature ranges are: organic matter - +2.4-+4.1\u2030, rainwater - -13.4-+2.3\u2030, mineral fertilizers - -7.4-+5.1\u2030, household waste - +5-+9\u2030; animal manure - +8-+11\u2030. For N2O, isotopic composition depends on isotopic signatures of substrate pools and reaction rates. \u03b415N values of NO3- are influenced by fractionation effects occurring during denitrification (\u025b=5-40\u2030), nitrification (\u025b=5-35\u2030) and DNRA (\u025b not reported). The isotopic signature of NH4+ is also affected by nitrification and DNRA as well as mineralization (\u025b=1\u2030), sorption (\u025b=1-8\u2030), anammox (\u025b=4.3-7.4\u2030) and volatilization (\u025b=25\u2030). As for the N2O, production of N2O leads to its depletion in 15N, whereas consumption - to enrichment in 15N. The magnitude of fractionation effects occurring during the considered processes depends on temperature, pH, DO, C/NO3- ratio, size of the substrate pool, availability of electron donors, water content in subsoil, residence time, land use, hydrogeology. While previous studies have accumulated rich data on isotopic composition of NO3- in groundwater, evidence remains scarce in the cases of NH4+ and N2O. Further research is required to consider variability of \u03b415N-NH4+ and \u03b415N-N2O in groundwater across agricultural ecosystems.", "keywords": ["groundwater pollution", "N anthropogenic sources", "Physique", " chimie", " math\u00e9matiques & sciences de la terre", "0207 environmental engineering", "N cycle processes", "02 engineering and technology", "N isotopes", "15. Life on land", "01 natural sciences", "Geological", " petroleum & mining engineering", "6. Clean water", "Engineering", " computing & technology", "Ing\u00e9nierie", " informatique & technologie", "Sciences de la terre & g\u00e9ographie physique", "12. Responsible consumption", "Physical", " chemical", " mathematical & earth Sciences", "13. Climate action", "stable isotope analysis", "Earth sciences & physical geography", "G\u00e9ologie", " ing\u00e9nierie du p\u00e9trole & des mines", "agriculture", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://orbi.uliege.be/bitstream/2268/215300/1/final%20version.pdf"}, {"href": "https://doi.org/2268/215300"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Science%20of%20The%20Total%20Environment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2268/215300", "name": "item", "description": "2268/215300", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2268/215300"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-04-01T00:00:00Z"}}, {"id": "2268/223849", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-26T16:25:39Z", "type": "Other", "title": "Biogeochemistry of greenhouse gases in groundwater under agricultural area (the Geer catchment, Belgium)", "keywords": ["Sciences de l\u2019environnement & \u00e9cologie", "Physique", " chimie", " math\u00e9matiques & sciences de la terre", "N2O", "Life sciences", "Geological", " petroleum & mining engineering", "Engineering", " computing & technology", "Sciences de la terre & g\u00e9ographie physique", "Ing\u00e9nierie", " informatique & technologie", "Physical", " chemical", " mathematical & earth Sciences", "Environmental sciences & ecology", "greenhouse gases", "groundwater", "Earth sciences & physical geography", "Sciences du vivant", "G\u00e9ologie", " ing\u00e9nierie du p\u00e9trole & des mines"], "contacts": [{"organization": "Nikolenko, Olha, Orban, Philippe, Jamin, Pierre, Jurado, Anna, Borges, Alberto, Brouy\u00e8re, Serge,", "roles": ["creator"]}]}, "links": [{"href": "https://orbi.uliege.be/bitstream/2268/223849/1/EGU2018-16102-2.pdf"}, {"href": "https://doi.org/2268/223849"}, {"rel": "self", "type": "application/geo+json", "title": "2268/223849", "name": "item", "description": "2268/223849", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2268/223849"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-04-07T00:00:00Z"}}, {"id": "2268/262547", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-26T16:25:39Z", "type": "Journal Article", "created": "2021-03-18", "title": "Dynamics of nitrous oxide with depth in groundwater: Insights from ambient groundwater and laboratory incubation experiments (Hesbaye chalk aquifer, Belgium)", "description": "Aquifers under agricultural areas are considered to be an indirect source of nitrous oxide emission (N2O) to the atmosphere, which is the greenhouse gas (GHGs) characterized with the highest global warning potential and acts as a stratospheric ozone depletion agent. Previous investigations performed in the Cretaceous Hesbaye chalk aquifer in Eastern Belgium suggested that the dynamics of N2O in the aquifer is controlled by overlapping biochemical processes such as nitrification and denitrification. The current study aims to obtain better insight concerning the factors controlling the distribution of N2O concentration along a vertical dimension in the aquifer, and to capture and quantify the occurrence of nitrification and denitrification processes in the groundwater system. Low-flow groundwater sampling technique was undertaken at different depths in the aquifer to collect groundwater samples aiming at obtaining information about ambient aquifer hydrogeochemical conditions and their effect on the accumulation of GHGs. Afterwards, laboratory stable isotope experiments, using NO3- and NH4+ compounds labeled with heavy 15N isotope, were applied to quantify the rates of nitrification and denitrification processes. Ambient studies suggest that the occurrence of N transformation was related to denitrification while laboratory incubation experiments did not detect it. Such controversial results might be explained by the discrepancy between real aquifer conditions and lab design studies. Thus, additional in situ tracer experiments should be carried out in areas where natural groundwater fluxes do not flush the injected tracer too rapidly. In addition, it would be useful to conduct microbiological studies to obtain better insight into the nature of subsurface biofilm biotope.", "keywords": ["Sciences aquatiques & oc\u00e9anologie", "Physique", " chimie", " math\u00e9matiques & sciences de la terre", "Nitrous Oxide", "01 natural sciences", "Low-flow sampling", "Ing\u00e9nierie", " informatique & technologie", "Calcium Carbonate", "Physical", " chemical", " mathematical & earth Sciences", "Belgium", "Groundwater", "0105 earth and related environmental sciences", "2. Zero hunger", "Aquatic sciences & oceanology", "N stable isotope analysis", "Life sciences", "Nitrification", "Geological", " petroleum & mining engineering", "6. Clean water", "Engineering", " computing & technology", "Sciences de la terre & g\u00e9ographie physique", "Greenhouse gases", "13. Climate action", "Earth sciences & physical geography", "Sciences du vivant", "Denitrification", "G\u00e9ologie", " ing\u00e9nierie du p\u00e9trole & des mines", "Laboratories"]}, "links": [{"href": "https://orbi.uliege.be/bitstream/2268/262547/2/Dynamics%20of%20nitrous%20oxide%20with%20depth%20in%20groundwater%20insights%20from%20ambient%20groundwater.pdf"}, {"href": "https://doi.org/2268/262547"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Contaminant%20Hydrology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2268/262547", "name": "item", "description": "2268/262547", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2268/262547"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-08-01T00:00:00Z"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=g%C3%A9ologie&f=json", "hreflang": "en-US"}, {"rel": "alternate", "type": "text/html", "title": "This document as HTML", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=g%C3%A9ologie&f=html", "hreflang": "en-US"}, {"rel": "collection", "type": "application/json", "title": "Collection URL", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main", "hreflang": "en-US"}, {"type": "application/geo+json", "rel": "first", "title": "items (first)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=g%C3%A9ologie&", "hreflang": "en-US"}, {"rel": "last", "type": "application/geo+json", "title": "items (last)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=g%C3%A9ologie&offset=10", "hreflang": "en-US"}], "numberMatched": 10, "numberReturned": 10, "distributedFeatures": [], "timeStamp": "2026-07-27T15:56:12.886743Z"}