0048 Aboveground carbon in live seedlings, shrubs, and bushes, in short tons, on forest land
as the forest land definition
Maine 232021
Forest type group (based on values from the Current inventory).
Site productivity class (based on values from the Current inventory).
Note: '-' indicates no value for data tables. If utilizing a screen reader, it is recommended to adjust verbosity for punctuation in screen reader settings.
| Site productivity class | ||||||
|---|---|---|---|---|---|---|
| Forest type group | Total | 120-164 | 85-119 | 50-84 | 20-49 | 0-19 |
| Total | 11,339,747 | 1,003,382 | 4,410,461 | 4,039,649 | 1,779,737 | 106,519 |
| White / red / jack pine group | 778,880 | 52,916 | 318,991 | 329,247 | 75,233 | 2,493 |
| Spruce / fir group | 3,234,404 | 369,536 | 1,537,101 | 1,121,817 | 113,343 | 92,607 |
| Loblolly / shortleaf pine group | 5,428 | - | 5,428 | - | - | - |
| Exotic softwoods group | 18,734 | 2,951 | 12,151 | 3,632 | - | - |
| Oak / pine group | 310,438 | 20,031 | 123,014 | 143,472 | 23,921 | - |
| Oak / hickory group | 304,519 | 9,250 | 55,871 | 208,964 | 30,433 | - |
| Elm / ash / cottonwood group | 283,601 | 5,048 | 59,348 | 115,224 | 93,984 | 9,997 |
| Maple / beech / birch group | 4,868,874 | 405,807 | 1,704,447 | 1,614,537 | 1,144,084 | - |
| Aspen / birch group | 1,427,808 | 133,573 | 542,287 | 471,260 | 280,687 | - |
| Other hardwoods group | 87,127 | 4,270 | 44,252 | 21,856 | 15,326 | 1,423 |
| Nonstocked | 19,935 | - | 7,571 | 9,639 | 2,725 | - |
Note: for 95% confidence level multiply SE pct by 1.96
| Site productivity class | ||||||
|---|---|---|---|---|---|---|
| Forest type group | Total | 120-164 | 85-119 | 50-84 | 20-49 | 0-19 |
| Total | 0.511 | 5.818 | 2.319 | 2.476 | 4.391 | 18.924 |
| White / red / jack pine group | 6.224 | 24.606 | 10.210 | 9.916 | 21.443 | 102.103 |
| Spruce / fir group | 2.373 | 8.778 | 3.978 | 4.820 | 15.502 | 20.532 |
| Loblolly / shortleaf pine group | 111.296 | - | 111.296 | - | - | - |
| Exotic softwoods group | 40.941 | 98.415 | 50.988 | 95.956 | - | - |
| Oak / pine group | 12.032 | 43.772 | 19.842 | 17.737 | 45.563 | - |
| Oak / hickory group | 10.535 | 62.442 | 25.481 | 13.016 | 35.114 | - |
| Elm / ash / cottonwood group | 10.873 | 73.444 | 23.862 | 17.855 | 18.922 | 62.396 |
| Maple / beech / birch group | 2.151 | 9.568 | 4.402 | 4.535 | 5.624 | - |
| Aspen / birch group | 5.317 | 18.354 | 8.897 | 9.630 | 12.472 | - |
| Other hardwoods group | 20.820 | 100.380 | 30.013 | 40.891 | 48.140 | 100.000 |
| Nonstocked | 33.481 | - | 56.974 | 48.646 | 73.190 | - |
Note: total number of plots in selected evaluations=3518
| Site productivity class | ||||||
|---|---|---|---|---|---|---|
| Forest type group | Total | 120-164 | 85-119 | 50-84 | 20-49 | 0-19 |
| Total | 3143 | 291 | 1,255 | 1,164 | 492 | 32 |
| White / red / jack pine group | 269 | 20 | 105 | 117 | 27 | 1 |
| Spruce / fir group | 1127 | 135 | 550 | 406 | 49 | 27 |
| Loblolly / shortleaf pine group | 1 | - | 1 | - | - | - |
| Exotic softwoods group | 6 | 1 | 4 | 1 | - | - |
| Oak / pine group | 78 | 6 | 27 | 39 | 6 | - |
| Oak / hickory group | 92 | 3 | 18 | 62 | 9 | - |
| Elm / ash / cottonwood group | 92 | 2 | 20 | 34 | 33 | 3 |
| Maple / beech / birch group | 1348 | 117 | 472 | 449 | 310 | - |
| Aspen / birch group | 357 | 33 | 139 | 115 | 73 | - |
| Other hardwoods group | 28 | 1 | 13 | 8 | 5 | 1 |
| Nonstocked | 11 | - | 4 | 5 | 2 | - |
Carbon in understory aboveground. Carbon (tons per acre) in the aboveground portions of seedlings and shrubs. Estimated from models based on geographic area, forest type, and (except for nonstocked and pinyon-juniper stands) live tree carbon density (Smith and Health 2008). This modeled attribute is a component of the EPA's Greenhouse Gas Inventory and is not a direct sum of Phase 2 or Phase 3 measurements.
Forest land: Land at least 10-percent canopy cover by trees of any size, including land that formerly had such tree cover and that will be naturally or artificially regenerated. Forest land includes transition zones,
such as areas between heavily forested and nonforested lands that are at least 10-percent canopy cover with trees and forest areas adjacent to urban and builtup lands. Also included are pinyon-juniper and chaparral areas in the West and afforested areas. The minimum area for classification of forest land is 1 acre and 120 feet wide measured stem-to-stem from the outer-most edge. Unimproved roads and trails, streams,
and clearings in forest areas are classified as forest if less than 120 feet wide.
Smith, J.E.; Heath, L.S. 2008. Forest sections of the land use change and forestry chapter, and Annex. In: US Environmental Protection Agency, Inventory of US Greenhouse Gas Emissions and Sinks: 1990-2006. EPA 430-R-08-005. http://www.epa.gov/climatechange/ghgemissions/usinventoryreport/archive.html (17 October)
FIA Forest land: Forest land has at least 10 percent canopy cover of trees of any size, or has had at least 10-percent canopy cover of trees in the past, based on the presence of stumps, snags, or other evidence, and that will be naturally or artificially regenerated. Additionally, the land is not subject to nonforest use(s) that prevent normal tree regeneration and succession, such as regular mowing, intensive grazing, or recreation activities. Forest land includes transition zones, such as areas between heavily forested and nonforested lands that are at least 10-percent canopy cover with trees and forest areas adjacent to urban and built-up lands. Also included are pinyon-juniper and chaparral areas in the West and afforested areas. The minimum area for classification of forest land is 1 acre in size and 120 feet wide measured stem-to-stem from the outer-most edge. Unimproved roads and trails, streams, and clearings in forest areas are classified as forest if less than 120 feet wide. This is the domestic reporting definition which is different from the definition used in international reporting (which includes a minimum tree canopy height criteria).
Row variable=Forest-type: A classification of forest land based on the species presently forming a plurality of the live-tree stocking. If softwoods predominate (50 percent or more), then the forest-type will be one of the softwood types and vice versa for hardwoods. Forest type is primarily derived using a computer algorithm, except when less than 25 percent of the plot samples a particular forest condition.
Usually, FORTYPCD equals FORTYPCDCALC. In certain situations, however, the result from the algorithm (FORTYPCDCALC) is overridden by the field call. The field-recorded forest type code (FLDTYPCD) is stored in this attribute when less than 25 percent of the plot samples the forested condition (CONDPROP_UNADJ <0.25).
In most cases, FORTYPCD is the same as the field-recorded forest type (FLDTYPCD). However,
situations of under sampling may cause this attribute to differ from FLDTYPCD.
Nonstocked forest land is land that currently has less than 10
percent stocking but formerly met the definition of forest land. Forest conditions meeting this definition have few, if any, trees sampled. In these instances, the algorithm cannot assign a specific forest type and the resulting forest type code is 999,
meaning nonstocked.
Forest type groups are formed from combining forest types into groups:
| Forest type group code | Forest type group name |
| 100 | White / red / jack pine group |
| 120 | Spruce / fir group |
| 140 | Longleaf / slash pine group |
| 150 | Tropical softwoods group |
| 160 | Loblolly / shortleaf pine group |
| 170 | Other eastern softwoods group |
| 180 | Pinyon / juniper group |
| 200 | Douglas-fir group |
| 220 | Ponderosa pine group |
| 240 | Western white pine group |
| 260 | Fir / spruc e / mountain hemlock group |
| 280 | Lodgepole pine group |
| 300 | Hemlock / Sitka spruce group |
| 320 | Western larch group |
| 340 | Redwood group |
| 360 | Other western softwoods group |
| 370 | California mixed conifer group |
| 380 | Exotic softwoods group |
| 390 | Other softwoods group |
| 400 | Oak / pine group |
| 500 | Oak / hickory group |
| 600 | Oak / gum / cypress group |
| 700 | Elm / ash / cottonwood group |
| 800 | Maple / beech / birch group |
| 900 | Asp en / birch group |
| 910 | Alder / maple group |
| 920 | Western oak group |
| 940 | Tanoak / laurel group |
| 950 | retired (Other western hardwoods group) |
| 960 | Other hardwoods group |
| 970 | Woodland hardwoods group |
| 980 | Tropical hardwoods group |
| 990 | Exotic hardwoods group |
| 999 | Nonstocked |
Column variable=Site productivity class is a classification of forest land in terms of inherent capacity to grow crops of industrial wood. Identifies the potential growth in cubic feet/acre/year and is based on the
culmination of mean annual increment of fully stocked natural stands. For data stored in the database that were processed outside of NIMS, this variable may be assigned based on the site productivity determined with the site trees, or from some other source, but the actual source of the site productivity class code is not known. For data processed with NIMS, this variable may either be assigned based on the site trees available for the plot, or, if no valid site trees are available, this variable is set equal to SITECLCDEST, a default value that is either an estimated or predicted site productivity class. If SITECLCDEST is used to populate SITECLCD,
the variable SITECL_METHOD is set to 6.
| Code | Description |
| 1 | 225+ cubic feet/acre/year |
| 2 | 165-224 cubic feet/acre/year |
| 3 | 120-164 cubic feet/acre/year |
| 4 | 85-119 cubic feet/acre/year |
| 5 | 50-84 cubic feet/acre/year |
| 6 | 20-49 cubic feet/acre/year |
| 7 | 0-19 cubic feet/acre/year |
FIADB_1.9.2.00
Bechtold, W.A.; Patterson, P.L., eds. 2005. The Enhanced Forest Inventory and Analysis Program - National Sampling Design and Estimation Procedures. Gen. Tech. Rep. SRS - 80. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station. 85 p.
USDA Forest Service, Forest Inventory and Analysis Program, Wed, 09 Oct 2024 09:01:59 GMT. Forest Inventory EVALIDator web-application Version 2.1.2. St. Paul, MN: U.S. Department of Agriculture, Forest Service, Northern Research Station. [Available only on internet: https://apps.fs.usda.gov/fiadb-api/evalidator]
| This SQL script can be used to derive estimates from the FIA Oracle Data Base (FIADB) |
|---|
| SELECT GRP1, GRP2, sum(ESTIMATED_VALUE * EXPNS) ESTIMATE FROM (SELECT pop_stratum.estn_unit_cn, pop_stratum.cn STRATACN, plot.cn plot_cn, plot.prev_plt_cn, cond.cn cond_cn, plot.lat, plot.lon, pop_stratum.expns EXPNS, '`' || LPAD(CASE WHEN REF_FORTYGPCDSQ.FORTYGPCD IS NULL THEN 9999 ELSE REF_FORTYGPCDSQ.FORTYGPCD END, 4, '0') || ' ' || case when REF_FORTYGPCDSQ.MEANING is null then 'Nonstocked' else REF_FORTYGPCDSQ.MEANING end GRP1, case coalesce(cond.siteclcd,-1) when 1 then '`0001 225+' when 2 then '`0002 165-224' when 3 then '`0003 120-164' when 4 then '`0004 85-119' when 5 then '`0005 50-84' when 6 then '`0006 20-49' when 7 then '`0007 0-19' when -1 then '`0008 Not available' else '`0009 Other' end GRP2, SUM(COND.CONDPROP_UNADJ * COND.CARBON_UNDERSTORY_AG * CASE COND.PROP_BASIS WHEN 'MACR' THEN POP_STRATUM.ADJ_FACTOR_MACR ELSE POP_STRATUM.ADJ_FACTOR_SUBP END) AS ESTIMATED_VALUE FROM FS_FIADB.POP_STRATUM POP_STRATUM JOIN FS_FIADB.POP_PLOT_STRATUM_ASSGN POP_PLOT_STRATUM_ASSGN ON (POP_PLOT_STRATUM_ASSGN.STRATUM_CN = POP_STRATUM.CN) JOIN FS_FIADB.PLOT ON (POP_PLOT_STRATUM_ASSGN.PLT_CN = PLOT.CN) JOIN FS_FIADB.PLOTGEOM ON (PLOT.CN = PLOTGEOM.CN) JOIN FS_FIADB.COND ON (COND.PLT_CN = PLOT.CN) left join (SELECT REF_FOREST_TYPE.VALUE FORTYPC, REF_FOREST_TYPE_GROUP.VALUE FORTYGPCD, REF_FOREST_TYPE_GROUP.MEANING FROM FS_FIADB.REF_FOREST_TYPE REF_FOREST_TYPE JOIN FS_FIADB.REF_FOREST_TYPE_GROUP REF_FOREST_TYPE_GROUP ON (REF_FOREST_TYPE.TYPGRPCD = REF_FOREST_TYPE_GROUP.VALUE)) REF_FORTYGPCDSQ ON (REF_FORTYGPCDSQ.FORTYPC = COND.fortypcd)WHERE COND.COND_STATUS_CD = 1 AND COND.CONDPROP_UNADJ IS NOT NULL AND COND.CARBON_UNDERSTORY_AG IS NOT NULL AND ((pop_stratum.rscd=24 and pop_stratum.evalid=232101)) GROUP BY pop_stratum.estn_unit_cn, pop_stratum.cn, plot.cn, plot.prev_plt_cn, cond.cn, plot.lat, plot.lon, pop_stratum.expns , REF_FORTYGPCDSQ.FORTYGPCD, case when REF_FORTYGPCDSQ.MEANING is null then 'Nonstocked' else REF_FORTYGPCDSQ.MEANING end , case coalesce(cond.siteclcd,-1) when 1 then '`0001 225+' when 2 then '`0002 165-224' when 3 then '`0003 120-164' when 4 then '`0004 85-119' when 5 then '`0005 50-84' when 6 then '`0006 20-49' when 7 then '`0007 0-19' when -1 then '`0008 Not available' else '`0009 Other' end ) GROUP BY GRP1, GRP2 ORDER BY GRP1, GRP2 |
| This SQL script can be used to derive estimates from a FIA SQLite Data Base (FIADB) Double click element to load Clipboard |
| SELECT GRP1, GRP2, sum(ESTIMATED_VALUE * EXPNS) ESTIMATE FROM (SELECT pop_stratum.estn_unit_cn, pop_stratum.cn STRATACN, plot.cn plot_cn, plot.prev_plt_cn, cond.cn cond_cn, plot.lat, plot.lon, pop_stratum.expns EXPNS, '`' || LPAD(CASE WHEN REF_FORTYGPCDSQ.FORTYGPCD IS NULL THEN 9999 ELSE REF_FORTYGPCDSQ.FORTYGPCD END, 4, '0') || ' ' || case when REF_FORTYGPCDSQ.MEANING is null then 'Nonstocked' else REF_FORTYGPCDSQ.MEANING end GRP1, case coalesce(cond.siteclcd,-1) when 1 then '`0001 225+' when 2 then '`0002 165-224' when 3 then '`0003 120-164' when 4 then '`0004 85-119' when 5 then '`0005 50-84' when 6 then '`0006 20-49' when 7 then '`0007 0-19' when -1 then '`0008 Not available' else '`0009 Other' end GRP2, SUM(COND.CONDPROP_UNADJ * COND.CARBON_UNDERSTORY_AG * CASE COND.PROP_BASIS WHEN 'MACR' THEN POP_STRATUM.ADJ_FACTOR_MACR ELSE POP_STRATUM.ADJ_FACTOR_SUBP END) AS ESTIMATED_VALUE FROM POP_STRATUM POP_STRATUM JOIN POP_PLOT_STRATUM_ASSGN POP_PLOT_STRATUM_ASSGN ON (POP_PLOT_STRATUM_ASSGN.STRATUM_CN = POP_STRATUM.CN) JOIN PLOT ON (POP_PLOT_STRATUM_ASSGN.PLT_CN = PLOT.CN) JOIN PLOTGEOM ON (PLOT.CN = PLOTGEOM.CN) JOIN COND ON (COND.PLT_CN = PLOT.CN) left join (SELECT REF_FOREST_TYPE.VALUE FORTYPC, REF_FOREST_TYPE_GROUP.VALUE FORTYGPCD, REF_FOREST_TYPE_GROUP.MEANING FROM REF_FOREST_TYPE REF_FOREST_TYPE JOIN REF_FOREST_TYPE_GROUP REF_FOREST_TYPE_GROUP ON (REF_FOREST_TYPE.TYPGRPCD = REF_FOREST_TYPE_GROUP.VALUE)) REF_FORTYGPCDSQ ON (REF_FORTYGPCDSQ.FORTYPC = COND.fortypcd)WHERE COND.COND_STATUS_CD = 1 AND COND.CONDPROP_UNADJ IS NOT NULL AND COND.CARBON_UNDERSTORY_AG IS NOT NULL AND ((pop_stratum.rscd=24 and pop_stratum.evalid=232101)) GROUP BY pop_stratum.estn_unit_cn, pop_stratum.cn, plot.cn, plot.prev_plt_cn, cond.cn, plot.lat, plot.lon, pop_stratum.expns , REF_FORTYGPCDSQ.FORTYGPCD, case when REF_FORTYGPCDSQ.MEANING is null then 'Nonstocked' else REF_FORTYGPCDSQ.MEANING end , case coalesce(cond.siteclcd,-1) when 1 then '`0001 225+' when 2 then '`0002 165-224' when 3 then '`0003 120-164' when 4 then '`0004 85-119' when 5 then '`0005 50-84' when 6 then '`0006 20-49' when 7 then '`0007 0-19' when -1 then '`0008 Not available' else '`0009 Other' end ) GROUP BY GRP1, GRP2 ORDER BY GRP1, GRP2 |
Start time Wed, 09 Oct 2024 09:01:59 GMT
End time Wed, 09 Oct 2024 09:02:01 GMT