This is a derived layer of forestland capability, suitability and availability for timber production. Water is assigned census or non-census water using the water bodies layer. Land is assigned to forest or non-forest using existing vegetation. Forestland both capable (productive) and other (non-productive) forestland, as well as non-forest are determined by CALVEG types (TABLE 38). Each CALVEG type is assigned a forest productivity code (TABLE 43). Suitability information is derived from productive forest CALVEG types that are available, minus the unsuitable forestlands (UNSU). Availability (TABLE 11) is derived by determining all forestland from CALVEG type, minus the congressionally withdrawn and pending withdrawal wilderness areas (WILD) and wild and scenic rivers (WSRR). For all lands that are tentatively suitable for timber production, a determination of final forestland allocations under the Forest Plan is made, using all prescription and management layers with a constraint on timber management assigned by the LSC code(s) on each layer (TABLE 29). The most constraining resource is coded for each acre on the National Forest. Deriving LSC final timberland allocation can be shown in a flow chart (LSC Chart <http://www.fs.fed.us/r5/rsl/projects/frdb/layers/lsc.gif>).
Source: Derived; for additional logic checks, see Land Suitability Class Logic in the following logic tables. (TABLE 111, TABLE 112, and TABLE 113)
--------------------------------------------------------------------------- 10/04/2006 CTrillo Copied data from SDE into a Personal Geodatabase for distribution and updated the metadata.
--------------------------------------------------------------------------- 2005 Data was reprojected from either UTM10 or 11 NAD27 or Albers NAD 27 to Albers NAD83. Then these data were migrated into the geodatbase environment.
--------------------------------------------------------------------------- 2001 The PLSC layer is built as an input to the Western Core Table Report process. The program subroutine compiles WATER, VEG and library layers that have lsc values. It sets the input layers ranked value and sets PLSC layer item values.
DISCUSSION OF LOGIC:
The vegetation, water and congresionally withdrawn lands are combined for NFS lands. The default value of 500 is assigned to item lsc. Census water is lsc = 1, non-census water is lsc = 100. Nonforest (veg prod = O) is lsc = 200. Nonproductive forest that is pending unavailable is lsc = 410. Productive foresst that is pending unavailable is lsc = 420. Nonproductive forest that is unavailable is lsc = 310. Productive forest that is unavailable is lsc = 320. Available nonforest land is lsc = 900.
Grids of each library layer containing an LSC item are created and reclassed based on table 113. These grids are merged with a MIN function.
The ranked lsc grid is merged with the productivity grid with a min function.
Note: Within the AML, for Tahoe, all LSC 500 and 600 are converted to 820.
The reasons are as follows: For Sierra Nevada Framework Project - wildlife habitat emphasis.
Reviews_Applied_to_Data:
This data has been reviewed to ensure conformance to the source data.
DATA STEWARD:
Ralph Warbington Section Head USDA Forest Service Remote Sensing Lab 1920 20th St. Sacramento, CA 95814
--------------------------------------------------------------------------- USFS: United States Forest Service RSL: Remote Sensing Lab, McClellan, CA. --------------------------------------------------------------------------- This original metadata report was created with the use of ArcCatalog. This format is designed to be compliant with the Federal Geographic Data Committee Spatial Data Transfer Standard.
Document file preparer: Nathan Amboy (Space Imaging) Date: 09/20/2001
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Availability Class, Timber Management Regulation Level, and Land Suitability class are items required for National Forest Planning analysis.
The following is a listing of valid codes for items in this layer, as taken from the FRDB Data Dictionary: <http://www.fs.fed.us/r5/rsl/projects/frdb/> .
TABLE 11 - AVAILABILITY CLASS Withdrawn areas (code 2) include existing wilderness, wild and scenic rivers, other special congressional designated areas, and administrative designated monuments. Areas recommended in the preferred alternative of the final plan for withdrawal, which are not currently withdrawn should be coded as 3, withdrawn area - pending. These are limited to proposed wilderness, wild and scenic rivers. All other land allocations, under an existing Land Management Plan, are coded as available area - not withdrawn.
CODE DESCRIPTION 1 Available area - not withdrawn 2 Withdrawn area - current reserved 3 Withdrawn area - pending
TABLE 23 - TIMBER MANAGEMENT REGULATION LEVEL
CODE CONSTRAINT P Private N Non-forest U Unsuitable forest land, no scheduled timber yields 1 Suitable forest land, regulated full timber yields 2 Suitable forest land, regulated modified timber yields 3 Suitable forest land, regulated limited timber yields
TABLE 29 - LRMP LAND SUITABILITY CLASS This information is for tracking the timberland allocations in the Forest Plan. The most constraining resource is coded for each acre on the National Forest.
The specific code should be used before the general code.
Private Land Within the Forest Boundary
LSC CODE DESCRIPTION TIMBER REG. CLASS TM PLAN COMPONEN 999 Private land P Private
Not Forested
LSC CODE DESCRIPTION TIMBER REG. CLASS TM PLAN COMPONEN 001 Census water N Water 100 Non-census water N Water (included in land area report) 200 Non-forest land N Non-Forest 250 No data N No Data
Withdrawn
LSC CODE DESCRIPTION TIMBER REG. CLASS TM PLAN COMPONEN 300 Unsuitable forest land, U Unavailable Withdrawn, Final 310 Withdrawn, final, nonproductive U Unavailable 320 Withdrawn, final, productive U Unavailable 400 Unsuitable forest land, U Unavailable Withdrawn pending final action 410 Withdrawn pending final action, U Unavailable nonproductive 420 Withdrawn pending final action, U Unavailable productive
Non-Industrial Wood
LSC CODE DESCRIPTION TIMBER REG. CLASS TM PLAN COMPONEN 900 Unsuitable forest land, U non-productiv incapable of producing 10 percent tree cover of industrial wood
Lack Of Response Data, Technology Or Restocking Problems
LSC CODE DESCRIPTION TIMBER REG. CLASS TM PLAN COMPONEN 700 Unsuitable forest land U Unsuitable 710 Restocking cannot be assured U Unsuitable 720 Irreversible damage is likely U Unsuitable to occur 740 Adequate response information U Unsuitable is lacking
Land Not Appropriate For Timber Production
LSC CODE DESCRIPTION TIMBER REG. CLASS TM PLAN COMPONEN 800 Unsuitable- Not appropriate U Not Appropriat (PRIMITIVE Rec.) 801 Threatened wildlife species U Not Appropriat 802 Endangered wildlife species U Not Appropriat 803 Sensitive wildlife species U Not Appropriat 804 Other wildlife species U Not Appropriat 810 Experimental Forest, Range U Not Appropriat or Watershed not withdrawn 820 Minimum Management Area U Other 830 Unregulated U Other 840 Developed Recreation U Other 850 Critical plant habitat U Other 860 Back Country/Near Natural/ U Other SPNM OR SPM Rec 870 Special Interest Area, U Other not withdrawn 880 Water Emphasis U Other 890 Administrative Withdrawals U Other
Land Suitable For Timber Production
LSC CODE DESCRIPTION TIMBER REG. CLASS TM PLAN COMPONEN 500 Suitable forest land, 1 Standard Timber emphasis 600 Suitable forest land, 2 Special emphasis other than Timber 610 Unregulated 2 Special 620 Unevenaged Management, 2 Special longer rotation 630 Recreation emphasis 2 Special 640 Visual emphasis 2 Special 650 Wildlife emphasis 2 Special 651 Threatened wildlife species 2 Special 652 Endangered wildlife species 2 Special 653 Sensitive wildlife species 2 Special 654 Other wildlife species 2 Special 655 Special plant emphasis 2 Special 660 Water emphasis 2 Special 665 Sensitive Soils 2 Special 667 Steep Slopes 2 Special 670 Marginal 3 Marginal 671 Threatened wildlife species 3 Special 672 Endangered wildlife species 3 Special 673 Sensitive wildlife species 3 Special 674 Other wildlife species 3 Special 675 Recreation emphasis 3 Special 676 Special plant emphasis 3 Special 677 Visual emphasis 3 Special 678 Water emphasis 3 Special 679 Less than 20 ft3/ac/yr (Modoc) 3 Special 680 Sensitive Soils 3 Special 681 Steep slopes 3 Special 682 Low site 3 Special 690 Noninterchangeable components (demand) (none in Region 5)
TABLE 37 - VEGETATION COVER TYPE
Covertypes (or life forms, as they are often called) are defined under Life Form Classification Rules in the Existing Vegetation <http://fsweb.rsl.r5.fs.fed.us/frdb/layers/eveg.html> section. Description is a general category briefly describing the individual covertype classes.
COVER TYPE DESCRIPTION CON conifer forest/woodland HDW hardwood forest/woodland MIX mixed conifer/hardwood woodland SHB shrub HEB herbaceous BAR barren, rock, snow WAT water AGR agriculture URB urban/residential
All covertype labels are derived directly from CALVEG labels. The covertype label MIX is assigned when a primary vegetation type (conifer) and a secondary vegetation type (hardwood) was mapped in a given stand.
TABLE 43 TIMBERLAND - PRODUCTIVITY
CODE DESCRIPTION P Productive Forest Site, Capable Of Growing 10 Percent Cover Of Industrial Wood Tree Species N Non-Productive Site, Not Capable Of Growing 10 Percent Cover Of Industrial Wood Tree Species O Non-Forest Types
TABLE 28 - TIMBERLAND SUITABILITY
This information is for tracking acres of productive available timberland suitability. This is based on the physical capability and tentative suitability
CODE CONSTRAINT R Cannot be Regenerated within 5 years D Irreversible Damage will occur I Inadequate information is available T Tentatively suitable for timber production
TABLE 1 - ADMINISTRATIVE FOREST
* ICS = Incident Command System
ADMINFOR ICS CODE * Forest Name 00 - Outside Adminstrative Boundary 01 ANF Angeles 02 CNF Cleveland 03 ENF Eldorado 04 INF Inyo 05 KNF Klamath 06 LNF Lassen 07 LPF Los Padres 08 MNF Mendocino 09 MDF Modoc 10 SRF Six Rivers 11 PNF Plumas 12 BDF San Bernardino 13 SQF Sequoia 14 SHF Shasta-Trinity 15 SNF Sierra 16 STF Stanislaus 17 TNF Tahoe 19 TMU Lake Tahoe Basin Management Unit 21 TOI Toiyabe
