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table : average-modeled-net-ecosystem-production
Average Modeled Net Ecosystem Production (In Tg C per Year During 2000 to 2006)
This table appears in chapter 10 of the Second State of the Carbon Cycle Report (SOCCR2): A Sustained Assessment Report report.
This table, adapted from Hayes et al. (2012), presents three different approaches for estimating net ecosystem production (NEP): inventory analysis, atmospheric inversion models, and land-surface models.
(a) Approximate grassland area is derived from www.statista.com/statistics/201761/projection-for-total-us-grassland-area-from-2010.
(b) Inventory analysis estimates, in teragrams of carbon (Tg C) per year, are the sum of livestock methane (CH4) emissions, livestock carbon dioxide (CO2) emissions, and grassland net ecosystem exchange (NEE) for Canada and the United States. For Mexico, the NEP value for “Others” was used from Table S10 in Hayes et al. (2012).
(c) A negative flux represents net ecosystem carbon uptake, while a positive flux indicates carbon loss from the ecosystem.
(d) Atmospheric inversion models and land-surface models are from Table 2 in Hayes et al. (2012) and exclude CH4 emissions and human settlement emissions.
|Country||Approximate Grassland Area (km^2) (a)||Analysis (b, c)||Atmospheric Inversion Models (c, d)||Land-Surface Models (c, d)|
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