{
  "release": "PRELIMINARY",
  "release_date": "2026-10-22",
  "category": "forestry",
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        "DAMLOC2_PNWRS",
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        "DMG_AGENT1_CD_PNWRS",
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        "DRYBIO_FOLIAGE",
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        "HTDMP",
        "INC10YR_PNWRS",
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        "PREV_BHAGE_RMRS",
        "PREV_HT_FLD",
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        "PREV_STATUS_CD",
        "PREV_TOTAGE_RMRS",
        "PREV_TREECLCD_RMRS",
        "PREV_TRE_CN",
        "PREV_WDLDSTEM",
        "RADAGECD_RMRS",
        "RADGRW_RMRS",
        "RECONCILECD",
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        "RING_COUNT_PNWRS",
        "ROOT_HT_PNWRS",
        "ROUGHCULL",
        "SALVCD",
        "SAPLING_FUSIFORM_SRS",
        "SAWHT",
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        "SEVERITY1B_CD_PNWRS",
        "SEVERITY1_CD_PNWRS",
        "SEVERITY2A_CD_PNWRS",
        "SEVERITY2B_CD_PNWRS",
        "SEVERITY2_CD_PNWRS",
        "SEVERITY3_CD_PNWRS",
        "SITREE",
        "SNAG_DIS_CD_PNWRS",
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        "TREECLCD_NERS",
        "TREECLCD_RMRS",
        "TREECLCD_SRS",
        "TREEGRCD",
        "TREEHISTCD",
        "TREE_GRADE_NCRS",
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        "VOLCFGRS_TOP",
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        "VOLCFSND_TOP",
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        "VOLTSSND_BARK",
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        "SISP",
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        "CANOPY_CVR_SAMPLE_METHOD_CD",
        "CHAINING_CD",
        "CN",
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        "CONDPROP_UNADJ",
        "COND_NONSAMPLE_REASN_CD",
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        "DSTRBYR3_P2A",
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        "FLDTYPCD_30",
        "FOREST_COMMUNITY_PNWRS",
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        "FORTYPCDCALC",
        "GRAZING_SRS",
        "GROUND_LAND_CLASS_PNW",
        "GSSTKCD",
        "HABTYPCD1",
        "HABTYPCD1_DESCR_PUB_CD",
        "HABTYPCD1_PUB_CD",
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        "HABTYPCD2_DESCR_PUB_CD",
        "HABTYPCD2_PUB_CD",
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        "HARVEST_TYPE2_SRS",
        "HARVEST_TYPE3_SRS",
        "INDUSTRIALCD_FIADB",
        "LAND_COVER_CLASS_CD",
        "LAND_COVER_CLASS_CD_RET",
        "LAND_USECD_RMRS",
        "LAND_USE_SRS",
        "LIVE_MISSING_CANOPY_CVR_PCT",
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        "MAICF",
        "MAPDEN",
        "MICRPROP_UNADJ",
        "MIXEDCONFCD",
        "MODIFIED_DATE",
        "MQUADPROP_UNADJ",
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        "NF_COND_STATUS_CD",
        "NVCS_LEVEL_1_CD",
        "NVCS_LEVEL_2_CD",
        "NVCS_LEVEL_3_CD",
        "NVCS_LEVEL_4_CD",
        "NVCS_LEVEL_5_CD",
        "NVCS_LEVEL_6_CD",
        "NVCS_LEVEL_7_CD",
        "NVCS_LEVEL_8_CD",
        "NVCS_PRIMARY_CLASS",
        "OPERABILITY_SRS",
        "OWNCD",
        "OWNGRPCD",
        "OWNSUBCD",
        "PCTBARE_RMRS",
        "PLANT_STOCKABILITY_FACTOR_PNW",
        "PLOT",
        "PLT_CN",
        "PRESNFCD",
        "PREV_AFFORESTATION_CD",
        "PROP_BASIS",
        "QMD_RMRS",
        "RANGETYPCD_RMRS",
        "RESERVCD",
        "RESERVCD_5",
        "SDIMAX_RMRS",
        "SDIPCT_RMRS",
        "SDI_RMRS",
        "SIBASE_FVS",
        "SICOND_FVS",
        "SIEQN_REF_CD",
        "SIEQN_REF_CD_FVS",
        "SISP_FVS",
        "SITECLCDEST",
        "SITECL_METHOD",
        "SITETREE_TREE",
        "SLOPE",
        "SOILPROP_UNADJ",
        "SOIL_ROOTING_DEPTH_PNW",
        "STAND_STRUCTURE_ME_NERS",
        "STAND_STRUCTURE_SRS",
        "STATECD",
        "STDORGSP",
        "STND_COND_CD_PNWRS",
        "STND_STRUC_CD_PNWRS",
        "STUMP_CD_PNWRS",
        "SUBCYCLE",
        "SUBPPROP_UNADJ",
        "TREES_PRESENT_NCRS",
        "TREES_PRESENT_NERS",
        "TRTCD1_P2A",
        "TRTCD2_P2A",
        "TRTCD3_P2A",
        "TRTOPCD",
        "TRTYR1_P2A",
        "TRTYR2_P2A",
        "TRTYR3_P2A",
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        "VOL_LOC_GRP"
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      "all_missing_columns_removed": [],
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      "missing_retained_observations_by_column": {
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      "table": "ME_PLOT.csv",
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      "reason": "Administrative, location or population-estimation table outside this nonrelational AI-feature release; no rows published."
    },
    {
      "table": "ME_POP_EVAL.csv",
      "input_rows": 125,
      "reason": "Administrative, location or population-estimation table outside this nonrelational AI-feature release; no rows published."
    },
    {
      "table": "ME_POP_EVAL_GRP.csv",
      "input_rows": 24,
      "reason": "Administrative, location or population-estimation table outside this nonrelational AI-feature release; no rows published."
    },
    {
      "table": "ME_POP_EVAL_TYP.csv",
      "input_rows": 208,
      "reason": "Administrative, location or population-estimation table outside this nonrelational AI-feature release; no rows published."
    },
    {
      "table": "ME_POP_PLOT_STRATUM_ASSGN.csv",
      "input_rows": 264201,
      "reason": "Administrative, location or population-estimation table outside this nonrelational AI-feature release; no rows published."
    },
    {
      "table": "ME_POP_STRATUM.csv",
      "input_rows": 5415,
      "reason": "Administrative, location or population-estimation table outside this nonrelational AI-feature release; no rows published."
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  ],
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      "sha256": "aa9fe9fae3f75987425c726307eba1d90ef88eb956bf12a3c75a5799cff48371"
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  ],
  "method": {
    "allowlist": "Only explicit numerical ecological/fishing features are published; all other source columns removed.",
    "normalization": "Trim whitespace; standardize source empty, dot, NA and null markers to empty cells; normalize equivalent decimal spellings without rounding; reject malformed/nonfinite feature rows.",
    "deduplication": "Group identical complete feature vectors within table across all input parts/waves. Publish each vector once with record_count to retain legitimate repeated observations. No claim that repeated measurements were erroneous duplicates.",
    "identifiers": "No source observation IDs, hashed IDs, source row numbers, exact locations, trip/site/plot links, demographic/residence fields or exact visit dates are exported.",
    "missingness": "No model-based imputation or missing-to-zero conversion. Rare species and zero catch records are retained. Size rows without species or any length/weight are excluded from biological feature table.",
    "validation": "ZIP CRC; full row-width and numeric-finiteness scan; count reconciliation; output unique-vector scan; removed-column check; missingness profile; output SHA-256."
  },
  "sources": [
    {
      "name": "USDA Forest Service Forest Inventory and Analysis",
      "url": "https://research.fs.usda.gov/programs/fia"
    },
    {
      "name": "FIA DataMart",
      "url": "https://apps.fs.usda.gov/fia/datamart/datamart.html"
    },
    {
      "name": "USDA Ag Data Commons FIADB dataset record identifying CC0",
      "url": "https://agdatacommons.nal.usda.gov/articles/dataset/Forest_Inventory_and_Analysis_database/27011560"
    },
    {
      "name": "FIADB dataset DOI resolving to FIA DataMart",
      "url": "https://doi.org/10.2737/RDS-2001-FIADB"
    },
    {
      "name": "Data.gov FIADB catalog with conflicting CC BY 4.0 metadata",
      "url": "https://catalog.data.gov/dataset/forest-inventory-and-analysis-database"
    },
    {
      "name": "FIA plot privacy and public coordinates",
      "url": "https://research.fs.usda.gov/programs/fia/sds"
    },
    {
      "name": "FIADB User Guide version 9.4",
      "url": "https://research.fs.usda.gov/sites/default/files/2025-08/wo-v9-4_Aug2025_UG_FIADB_database_description_NFI.pdf"
    }
  ],
  "source_license_note": {
    "label": "USDA public-use data - CC0 identified in USDA\u2019s dataset record",
    "basis": "USDA Ag Data Commons FIADB dataset record identifies CC0; its DOI resolves to FIA DataMart, the raw data source.",
    "dataset_record": "https://agdatacommons.nal.usda.gov/articles/dataset/Forest_Inventory_and_Analysis_database/27011560",
    "license_url": "https://creativecommons.org/publicdomain/zero/1.0/",
    "metadata_conflict": "The separate Data.gov FIADB catalog identifies CC BY 4.0, including for the DataMart distribution. This release follows USDA dataset-record CC0 identification while preserving this conflicting statement and source attribution.",
    "conflicting_catalog": "https://catalog.data.gov/dataset/forest-inventory-and-analysis-database",
    "verified_on": "2026-10-22",
    "modifications_and_attribution": "See LICENSE.txt; no new CC BY license is assigned to upstream data or Krummholz additions."
  }
}
