Historical trends and drivers of the laterally transported terrestrial dissolved organic carbon to river systems

19476 15 107824 2 326944 document 107824 1-s2.0-S0048969724006971-main (1).pdf application/pdf 0ec1ac4d7ebbc38432e33a7964b22160 MD5 3934205 2024-10-28 16:13:38 https://pure.iiasa.ac.at/id/eprint/19476/7/1-s2.0-S0048969724006971-main%20%281%29.pdf 19476 7 7 application/pdf text en public cc_by_4

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published 107825 1 326947 document 107825 indexcodes.txt text/x-c++ 66329257010ea17432a18a625d2babfd MD5 16046 2024-10-28 16:14:16 https://pure.iiasa.ac.at/id/eprint/19476/8/indexcodes.txt 19476 8 8 text/x-c++ other Generate index codes conversion from text to indexcodes en public

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http://eprints.org/relation/isVersionOf https://pure.iiasa.ac.at/id/document/107824 http://eprints.org/relation/isVolatileVersionOf https://pure.iiasa.ac.at/id/document/107824 http://eprints.org/relation/issmallThumbnailVersionOf https://pure.iiasa.ac.at/id/document/107824 archive 353 disk0/00/01/94/76 2024-02-01 20:11:12 2025-03-12 05:01:09 2024-02-01 20:11:12 article show Nakhavali A. 2392 0000-0003-2675-6730 Lauerwald R. Regnier P. Friedlingstein P. Historical trends and drivers of the laterally transported terrestrial dissolved organic carbon to river systems pub BNR IBF Dissolved organic carbon (DOC), Terrestrial carbon flux, Historical carbon attribution, Climate-driven changes, CO2 fertilization, Soil-to-River carbon transfer Dissolved organic carbon (DOC) represents a critical component of terrestrial carbon (C) cycling and is a key contributor to the carbon flux between land and aquatic systems. Historically, the quantification of environmental factors influencing DOC leaching has been underexplored, with a predominant focus on land use changes as the main driver. In this study, the process-based terrestrial ecosystem model JULES-DOCM was utilized to simulate the spatiotemporal patterns of DOC leaching into the global river network from 1860 to 2010. This study reveals a 17 % increment in DOC leaching to rivers, reaching 292 Tg C yr−1 by 2010, with atmospheric CO2 fertilization identified as the primary controlling factor, significantly enhancing DOC production and leaching following increased vegetation productivity and soil carbon stocks. To specifically quantify the contribution of CO2 fertilization, a factorial simulation approach was employed that isolated the effects of CO2 from other potential drivers of change. The research highlights distinct regional responses. While globally CO2 fertilization is the dominant factor, in boreal regions, climate change markedly influences DOC dynamics, at times exceeding the impact of CO2. Temperate and sub-tropical areas exhibit similar trends in DOC leaching, largely controlled by CO2 fertilization, while climate change showed an indirect effect through modifications in runoff patterns. In contrast, the tropics show a relatively low increase in DOC leaching, which can be related to alterations in soil moisture and temperature. Additionally, the study re-evaluates the role of land use change in DOC leaching, finding its effect to be considerably smaller than previously assumed. These insights emphasize the dominant roles of CO2 fertilization and climate change in modulating DOC leaching, thereby refining our understanding of terrestrial carbon dynamics and their broader implications on the global C budget. 2024-03-20 published Elsevier doi:10.1016/j.scitotenv.2024.170560 3491 public Science of the Total Environment 917 e170560 TRUE 1879-1026 The role of European forests in achieving climate neutrality by 2050 (ForestNavigator, HE 101056875) Climate-Carbon Interactions in the Current Century (4C, H2020 821003) Earth system models for the future (ESM2025, H2020 101003536) yes info:eu-repo/grantAgreement/EC/HE/101056875/EU//ForestNavigator; info:eu-repo/grantAgreeinfo:eu-repo/grantAgreement/EC/H2020/821003/EU//4C; info:eu-repo/grantAgreement/EC/H2020/101003536/EU//ESM2025 info:eu-repo/semantics/article info:eu-repo/semantics/openAccess