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@prefix dcterms: <http://purl.org/dc/terms/> . @prefix xsd: <http://www.w3.org/2001/XMLSchema#> . @prefix gcis: <http://data.globalchange.gov/gcis.owl#> . @prefix cito: <http://purl.org/spar/cito/> . @prefix biro: <http://purl.org/spar/biro/> . <https://data.globalchange.gov/report/second-state-carbon-cycle-report-soccr2-sustained-assessment-report/chapter/forests/finding/key-message-9-1> dcterms:identifier "key-message-9-1"; gcis:findingNumber "9.1"^^xsd:string; gcis:findingStatement "Net uptake of 217 teragrams of carbon (Tg C) per year by the forest sector in North America is well documented and has persisted at about this level over the last decade. The strength of net carbon uptake varies regionally, with about 80% of the North American forest carbon sink occurring within the United States (<em>high confidence, very likely</em>)."^^xsd:string; gcis:isFindingOf <https://data.globalchange.gov/report/second-state-carbon-cycle-report-soccr2-sustained-assessment-report/chapter/forests>; gcis:isFindingOf <https://data.globalchange.gov/report/second-state-carbon-cycle-report-soccr2-sustained-assessment-report>; ## Properties of the finding: gcis:descriptionOfEvidenceBase "Net carbon uptake in North American forests, as documented in national inventory reports from Canada (ECCC 2016), Mexico (INECC/SEMARNAT 2015), and the United States (U.S. EPA 2018), is in broad agreement with results from a wide range of sources (Hayes et al., 2012; King et al., 2015). These sources include atmospheric inversion models (Peylin et al., 2013), syntheses of forest inventory and land-change data (Pan et al., 2011), measurements of forest-atmosphere carbon exchange with eddy covariance (Amiro et al., 2010), and ecosystem process models (Sitch et al., 2015)."^^xsd:string; gcis:assessmentOfConfidenceBasedOnEvidence "While some uncertainty remains about the spatial patterns and drivers of carbon sources and sinks across the continent, multiple lines of evidence converge to provide high confidence regarding the magnitude of net carbon uptake across North America’s forests in recent decades."^^xsd:string; gcis:newInformationAndRemainingUncertainties "Regions differ widely in their source and sink patterns and drivers. For example, in the United States, the Northeast has a prevailing legacy of carbon uptake from historical land clearing; in the Southeast, carbon uptake is dominated by regrowth from contemporary harvesting; and the West has increasing carbon releases from the recent rise in environmental stresses (e.g., droughts, insects, and pathogens) and disturbances (Williams et al., 2016). Fluxes also exhibit large spatial variability at landscape scales (Turner et al., 2016; Williams et al., 2014), with neighboring stands ranging from sources to sinks because of a host of factors including time since disturbance, disturbance type and severity, forest type, local climate, site fertility, topographic position, and other edaphic factors."^^xsd:string; a gcis:Finding . ## This finding cites the following entities: <https://data.globalchange.gov/report/second-state-carbon-cycle-report-soccr2-sustained-assessment-report/chapter/forests/finding/key-message-9-1> prov:wasDerivedFrom <https://data.globalchange.gov/report/second-state-carbon-cycle-report-soccr2-sustained-assessment-report/chapter/preface/figure/figurep-4>.