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Measurements of DOC concentrations in soil, runoff and drainage are scarce and their spatial distribution highly skewed towards industrialized countries. The contribution of terrestrial DOC leaching to the global\u2010scale C balance of terrestrial ecosystems thus remains poorly constrained. Here, using a process based, integrative, modelling approach to upscale from existing observations, we estimate a global terrestrial DOC leaching flux of 0.28\u00a0\u00b1\u00a00.07\u00a0Gt\u00a0C\u00a0year<jats:sup>\u22121<\/jats:sup> which is conservative, as it only includes the contribution of mineral soils. Our results suggest that globally about 15% of the terrestrial Net Ecosystem Productivity (NEP, calculated as the difference between Net Primary Production and soil respiration) is exported to aquatic systems as leached DOC. In the tropical rainforest, the leached fraction of terrestrial NEP even reaches 22%. Furthermore, we simulated spatial\u2010temporal trends in DOC leaching from soil to the river networks from 1860 to 2010. We estimated a global increase in terrestrial DOC inputs to river network of 35\u00a0Tg\u00a0C\u00a0year<jats:sup>\u22121<\/jats:sup> (14%) from 1860 to 2010. Despite their low global contribution to the DOC leaching flux, boreal regions have the highest relative increase (28%) while tropics have the lowest relative increase (9%) over the historical period (1860s compared to 2000s). The results from our observationally constrained model approach demonstrate that DOC leaching is a significant flux in the terrestrial C budget at regional and global scales.<\/jats:p>","DOI":"10.1111\/gcb.15460","type":"journal-article","created":{"date-parts":[[2020,11,29]],"date-time":"2020-11-29T01:11:50Z","timestamp":1606612310000},"page":"1083-1096","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":117,"title":["Leaching of dissolved organic carbon from mineral soils plays a significant role in the terrestrial carbon balance"],"prefix":"10.1111","volume":"27","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2675-6730","authenticated-orcid":false,"given":"Mahdi","family":"Nakhavali","sequence":"first","affiliation":[{"name":"College of Life and Environmental Sciences University of Exeter Exeter UK"},{"name":"Biogeochemistry and Modelling of the Earth System Department Geoscience, Environment and Society Universit\u00e9 Libre de Bruxelles Bruxelles Belgium"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5554-0897","authenticated-orcid":false,"given":"Ronny","family":"Lauerwald","sequence":"additional","affiliation":[{"name":"Universit\u00e9 Paris\u2010Saclay INRAE AgroParisTech UMR ECOSYS Thiverval\u2010Grignon France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pierre","family":"Regnier","sequence":"additional","affiliation":[{"name":"Biogeochemistry and Modelling of the Earth System Department Geoscience, Environment and Society Universit\u00e9 Libre de Bruxelles Bruxelles Belgium"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4311-8645","authenticated-orcid":false,"given":"Bertrand","family":"Guenet","sequence":"additional","affiliation":[{"name":"Laboratoire de G\u00e9ologie de l'ENS PSL Research University Paris France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1320-315X","authenticated-orcid":false,"given":"Sarah","family":"Chadburn","sequence":"additional","affiliation":[{"name":"College of Engineering, Mathematics and Physical Sciences University of Exeter Exeter UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3309-4739","authenticated-orcid":false,"given":"Pierre","family":"Friedlingstein","sequence":"additional","affiliation":[{"name":"College of Engineering, Mathematics and Physical Sciences University of Exeter Exeter UK"},{"name":"Laboratoire de Meteorologie Dynamique Departement de Geosciences Institut Pierre\u2010Simon Laplace CNRS\u2010ENS\u2010UPMC\u2010X Ecole Normale Superieure Paris France"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2020,12,14]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1038\/ngeo618"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.5194\/gmd-4-677-2011"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.3354\/cr00903"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1139\/a02-004"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.1029\/94GB03156"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.5194\/gmd-12-3503-2019"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.5194\/gmd-10-959-2017"},{"key":"e_1_2_8_9_1","doi-asserted-by":"publisher","DOI":"10.1038\/ngeo2720"},{"key":"e_1_2_8_10_1","volume-title":"Climate change 2013: The physical science basis. 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Smith J. Flynn H. Killham K. Rangel\u2010Castro I. Foereid B. Aitkenhead M. Chapman S. Towers W. Bell J. Lumsdon D. Milne R. Thomson A. Simmons I. Skiba U. Reynolds B. Evans C. Frogbrook Z. Bradley I. \u2026Falloon P.(2007).ECOSSE: Estimating carbon in organic soils \u2010 Sequestration and emissions: Final report. Web only Scottish Executive 165pp. (CEH Project Number: C02491)."},{"key":"e_1_2_8_71_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ecolmodel.2005.04.008"},{"key":"e_1_2_8_72_1","doi-asserted-by":"publisher","DOI":"10.1002\/2014JG002760"},{"key":"e_1_2_8_73_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.scitotenv.2012.03.069"},{"key":"e_1_2_8_74_1","doi-asserted-by":"publisher","DOI":"10.1038\/ncomms14856"},{"key":"e_1_2_8_75_1","first-page":"41","article-title":"The WATCH Forcing Data 1958\u20132001: A meteorological forcing dataset for land surface\u2010 and hydrological\u2010models","volume":"22","author":"Weedon G. 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