Above-ground tree carbon storage in response to nitrogen deposition in the US is heterogeneous and may have weakened

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dc.contributor.authorClark, Christopher M.en
dc.contributor.authorThomas, R. Quinnen
dc.contributor.authorHorn, Kevin J.en
dc.coverage.countryUnited Statesen
dc.date.accessioned2023-03-23T15:02:07Zen
dc.date.available2023-03-23T15:02:07Zen
dc.date.issued2023-02-14en
dc.description.abstractLong-term nitrogen deposition may not provide sustained stimulation of tree carbon storage, suggest analyses of a tree inventory and growth for the contiguous US between 2000 and 2016, compared to data for the 1980s and 1990s. Changes in nitrogen (N) availability affect the ability for forest ecosystems to store carbon (C). Here we extend an analysis of the growth and survival of 94 tree species and 1.2 million trees, to estimate the incremental effects of N deposition on changes in aboveground C (dC/dN) across the contiguous U.S. (CONUS). We find that although the average effect of N deposition on aboveground C is positive for the CONUS (dC/dN = +9 kg C per kg N), there is wide variation among species and regions. Furthermore, in the Northeastern U.S. where we may compare responses from 2000-2016 with those from the 1980s-90s, we find the recent estimate of dC/dN is weaker than from the 1980s-90s due to species-level changes in responses to N deposition. This suggests that the U.S. forest C-sink varies widely across forests and may be weakening overall, possibly necessitating more aggressive climate policies than originally thought.en
dc.description.notesThe views presented are those of the authors and do not necessarily represent the views or policies of the US Environmental Protection Agency. The original work presented here was supported by the USGS John Wesley Powell Center for Analysis and Synthesis.en
dc.description.sponsorshipUSGS John Wesley Powell Center for Analysis and Synthesisen
dc.description.versionPublished versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1038/s43247-023-00677-wen
dc.identifier.eissn2662-4435en
dc.identifier.issue1en
dc.identifier.other35en
dc.identifier.urihttp://hdl.handle.net/10919/114164en
dc.identifier.volume4en
dc.language.isoenen
dc.publisherSpringer Natureen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectForest-soil acidificationen
dc.subjectacidic depositionen
dc.subjectplant diversityen
dc.subjectunited-statesen
dc.subjecttemperateen
dc.subjectgrowthen
dc.subjectsequestrationen
dc.subjectfertilizationen
dc.subjectecosystemsen
dc.subjectlimitationen
dc.titleAbove-ground tree carbon storage in response to nitrogen deposition in the US is heterogeneous and may have weakeneden
dc.title.serialCommunications Earth & Environmenten
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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