{
 "nfi": {
  "source": "Thailand FREL/FRL submission to the UNFCCC (modified July 2021): Table 13 (NFI cycle 3), Tables 6–7 (2016 area)",
  "url": "https://redd.unfccc.int/media/modified_thailand_rl_july2021.pdf",
  "reference_year": 2017,
  "plot_years": "2013–2018",
  "allometric_bias_pct": {
   "evergreen": -13.6,
   "deciduous": -25.2,
   "mangrove": 0.0
  },
  "national": {
   "carbon_stock_tco2e": 3475167169.8,
   "carbon_stock_ci95_tco2e": 252095794.5,
   "forest_area_ha": 17228723.0,
   "forest_area_ci95_ha": 733610.8,
   "agb_total_t": 1559427979.0,
   "agb_total_ci95_t": 110868811.5,
   "agb_mean_t_ha": 90.5,
   "agb_mean_ci95_t_ha": 5.0,
   "by_type": {
    "evergreen": {
     "area_ha": 5901616,
     "agb_t_ha": 136.327
    },
    "deciduous": {
     "area_ha": 11085770,
     "agb_t_ha": 65.465
    },
    "mangrove": {
     "area_ha": 241337,
     "agb_t_ha": 120.779
    }
   }
  },
  "national_allometry_corrected": {
   "carbon_stock_tco2e": 4279783329.1,
   "carbon_stock_ci95_tco2e": 303941760.5,
   "forest_area_ha": 17228723.0,
   "forest_area_ci95_ha": 733610.8,
   "agb_total_t": 1930567296.5,
   "agb_total_ci95_t": 134834970.4,
   "agb_mean_t_ha": 112.1,
   "agb_mean_ci95_t_ha": 6.0
  }
 },
 "map": {
  "agb": "ESA CCI Biomass v7.0, 2017, 100 m",
  "forest": "JAXA ALOS-2 PALSAR-2 FNF v2.1.0, 2017, forest fraction (classes 1–2)",
  "forest_area_ha": 23844913.9,
  "agb_total_t": 3935089897.5,
  "agb_total_ci95_t_block_model": 52947577.0,
  "agb_mean_t_ha": 165.03
 },
 "comparison": {
  "mean_ratio_map_over_nfi": 1.823,
  "total_ratio_map_over_nfi": 2.523,
  "extra_fnf_forest_ha": 6616190.9,
  "implied_agb_t_ha_of_extra_tree_cover_if_map_unbiased_on_nfi_forest": 359.1,
  "reading": "If the map were unbiased on NFI forest, the extra FNF tree cover would have to average the implied density above.",
  "map_over_nfi_on_nfi_forest_if_extra_holds": {
   "0": 2.52,
   "100": 2.1,
   "136": 1.95,
   "200": 1.67
  },
  "allometry_corrected": {
   "implied_agb_t_ha_of_extra_tree_cover": 303.0,
   "evergreen_agb_t_ha": 157.8,
   "map_over_nfi_on_nfi_forest_if_extra_holds": {
    "0": 2.04,
    "100": 1.7,
    "136": 1.57,
    "200": 1.35
   }
  },
  "assumes": "Inventory forest is fully inside FNF forest. Radar misses some sparse dry dipterocarp; inventory forest outside FNF would lower these ratios."
 },
 "cgls_forest_type_check": {
  "layer": "Copernicus Global Land Service LC100 v3.0.1, 2017, forest-type layer (CC BY 4.0)",
  "evergreen_ha": 24083539,
  "deciduous_ha": 751457,
  "evergreen_share": 0.97,
  "frel_evergreen_share": 0.347,
  "used": false,
  "reason": "Leaf-phenology labels put almost all Thai forest in the evergreen class, unlike the NFI forest types; strata would not match."
 },
 "caveats": [
  "Different forest definitions: NFI forest excludes plantations other than teak; FNF counts any tree canopy ≥10% over ≥0.5 ha.",
  "Different years: NFI cycle 3 plots span 2013–2018 (reference year 2017); the map is 2017 and the FREL areas are 2016.",
  "Inventory AGB counts trees in the 0.1 ha plot; the FREL notes its Thai equations underestimate tree biomass (Table 10, 60 trees), shown here as a sensitivity.",
  "Carbon stock here is biomass only (above- and below-ground), without dead wood, litter or soil.",
  "The NFI totals propagate the published half 95% CIs as independent terms; map uncertainty is the ledger block model (random error only).",
  "National scale only. Not a correction for any province, box or parcel."
 ]
}