MNDNR Forest Inventory

This page last updated: 01/06/2023 Metadata created using Minnesota Geographic Metadata Guidelines

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Overview
Data Quality
Data Organization
Coordinate System
Attributes
Distribution - Get Data
Metadata Reference

Section 1: Overview

Originator:Minnesota Department of Natural Resources (DNR) - Division of Forestry

Title: MNDNR Forest Inventory

Abstract: The MNDNR Forest Inventory layer depicts the stand level demarcation of lands administered or managed by the Minnesota Department of Natural Resources (MNDNR) Forestry. Stands are demarcated based on MNDNR Forestry classification of forested areas with similar conditions, based on current, past, or future management objectives. Stands are checked through varying means such as on-site visits, aerial as well as remote sensing based modeling and interpretation. The characteristics for each stand are housed within this dataset, and represent summations for the characteristics of the area (i.e., Stand). Please see other data sets for further refinement of within-stand conditions:

MNDNR Forest Inventory Old Growth: https://gisdata.mn.gov/dataset/biota-dnr-forest-inv-old-growth (metadata)
MNDNR Forest Inventory NonMerch: https://gisdata.mn.gov/dataset/biota-dnr-forest-inv-nmerch (metadata)
MNDNR Forest Inventory Species: https://gisdata.mn.gov/dataset/biota-dnr-forest-inv-species (metadata)
MNDNR Forest Inventory Diameter: https://gisdata.mn.gov/dataset/biota-dnr-forest-inv-diameter (metadata)

Purpose: Forest resource assessment, forest management planning, forest estate modeling, broad scale fauna habitat assessment, biotic community mapping support, forest vegetation current and historic.

Time Period of Content Date: 07/16/2024

Currentness Reference: Time Period of Content date indicates the date which the user can be confident of accuracy and completeness of the dataset.

Progress: Complete

Maintenance and Update Frequency: Unknown

Spatial Extent of Data: Statewide

Bounding Coordinates: -96.309815
-89.813889
49.292426
43.479354

Place Keywords: Minnesota, MN

Theme Keywords: Cover-type, Ecosystem, Forest, Inventory, Land-cover, Minnesota, MNDNR, Stand, Structure, Vegetation.

Theme Keyword Thesaurus: ISO 19115 Category

Access Constraints: None

Use Constraints: None

Contact Person Information: Kari Geurts, MNIT Forestry Business Services Supervisor
Minnesota DNR - Forestry
500 Lafayette Rd
Saint Paul, MN 55155
Phone: 651-259-5275
Email: kari.geurts@state.mn.us

Browse Graphic: Click to view a data sample.
Inventory Stands

Associated Data Sets: MNDNR Forest Inventory Old Growth: https://gisdata.mn.gov/dataset/biota-dnr-forest-inv-old-growth
MNDNR Forest Inventory NonMerch: https://gisdata.mn.gov/dataset/biota-dnr-forest-inv-nmerch
MNDNR Forest Inventory Species: https://gisdata.mn.gov/dataset/biota-dnr-forest-inv-species
MNDNR Forest Inventory Diameter: https://gisdata.mn.gov/dataset/biota-dnr-forest-inv-diameter

MNDNR Historic Forest Stand Inventory: Archives of 4trees and (its predecessor) FIM going back to 2001. Full data download (>2 GB): https://gdrs.dnr.state.mn.us/gdrs/data/pub/us_mn_state_dnr/biota_historic_dnr_fim.zip

Section 2: Data Quality

Attribute Accuracy: Data are in use by DNR staff on a daily basis. Attributes are fixed as problems are made known

Logical Consistency:

Completeness: As new lands are acquired, 4Trees Stand Inventory data collection is scheduled.

Horizontal Positional Accuracy: Features are digitized onscreen over standard 24k digital raster graphics (DRGs) and U.S. Geological Survey (USGS) digital orthophoto quadrangles (DOQs) and will inherit the horizontal positional accuracy of those products.

Vertical Positional Accuracy: Not Applicable

Lineage: Original source layer was MNDNR's enterprise geodatabase: Forest Inventory Managment System (FIM). Data are now extracted on a regular basis from the MNDNR's 4Trees Inventory Module (LRM)

Section 3: Spatial Data Organization (not used in this metadata)

Section 4: Coordinate System

Horizontal Coordinate Scheme: Universal Transverse Mercator

UTM Zone Number: 15

Horizontal Datum: NAD83

Horizontal Units: meters

Vertical Datum: NAVD88

Vertical Units: meters

Depth Datum: not applicable

Depth Units: meters

Section 5: Attributes

Overview: Stand Key: Unique system-generated number to identify the stand

SLabel: A concatenation of the last 5 digits of the unique 4Trees stand key + cover type abbreviation + stand size class code + stand density code (e.g., 99806 NP58)

Cover Type Code: Numerical code representing the main species or combination of species (e.g.., Northern hardwoods). Used to determine the SLabel in 4Trees. See inventory standards for how to determine the cover type code of a stand. (see table below)

Cover Size: The average of the observed diameters of the main species or combination of species, rounded down to the nearest whole inch. (0-.9, 1-2.9, 3-4.9,5-8.9,9-14.9,15-19.9,20-24.9,25+) (see table below)

Cover Density Code: A numerical code representing the measurement of the degree of crowding or measurement of volume within the stand expressed as stems/acre, cords/acre, or bord foot/acre depending on the average observed diameter of the main species. (Stems/Acre: 0-4.9 inches; Cords/Acre: 5-14.9 inches; Board Feet/Acre: 15+ inches)

Cover Density: An estimate of the degree of crowding or measurement of volume within the stand expressed as stems/acre, cords/acre, or bord foot/acre depending on the average observed diameter of the main species. (Stems/Acre: 0-4.9 inches; Cords/Acre: 5-14.9 inches; Board Feet/Acre: 15+ inches)

Last Inventory Date: Survey date of most recent inventory activity

Basal Area/Acre: The cross-sectional area occupied by live trees within the stand represented in square feet/acre.

Basal Area/Acre Standard Error %: Calculated standard error of the Basal Area/Acre within the stand as a percent of the mean.

Basal Area CV: The ratio of the standard deviation to the mean for the Basal Area within the stand.

MBF/Acre: The sum of all MBF/Acre for merchantable species in the stand.

MBF/Acre Standard Error %: Calculated standard error of the MBF/Acre within the stand as a percent of the mean.

Site Index: A determination of forest site quality or productivity based on the average height (in feet) of the dominant or co-dominant trees within the main species at a specified age.

Main Species Code: Code for main species in stand (see table below)

Main Species: The most abundant species within the stand, represented as the species with the greatest volume (cover size 5 inches or greater) or stems/acre (cover size less than 5 inches). This species is used to calculate Site Index.

Main Species Cords/Acre: The sum of all cords for merchantable species in the stand, excluding estimated MBF equivalent within the stand.

Total Cords/Acre: The sum of all cord equivalents, measured as (cords + MBF cordwood equivalent (500BF/cord)) for all species in the stand.

Total Cords/Acre Standard Error %: Calculated standard error of the Total Cords/Acre within the stand as a percent of the mean.

Cords/Acre: The sum of all cords for merchantable species in the stand, excluding estimated MBF equivalent within the stand.

Cords/Acre Standard Error %: Calculated standard error of the Cords/Acre within the stand as a percent of the mean.

Avg Diameter (QMD): A calculation of the quadratic mean diameter of all trees and stems within the stand.

Trees/Acre: A calculation across all size classes of Trees/Acre in the stand.

Main Damage Code: A numerical code representing the most significant damage that is affecting the main species within the stand. Damage significance order is based on the risk of tree mortality, volume loss and growth loss. (see table below)

Main Damage: The most significant damage that is affecting the main species within the stand. Damage significance order is based on the risk of tree mortality, volume loss and growth loss.

Main Damage Percent Affected Code: A numerical code representing the percentage of trees in the main species of the stand affected by the main damage. The percentage is determined through estimation across measured plots, off-plot observations, or a combination of both. (see table below)

Main Damage Percent Affected: The percentage of trees in the main species of the stand affected by the main damage. The percentage is determined through estimation across measured plots, off-plot observations, or a combination of both.

Number of Plots: Count of inventory plots conducted by the forester in the stand.

Stand Origin Code: A numerical code representing a determination of the stand origin based on stand history or site conditions indicating if the stand was naturally regenerated, or was artificially regenerated at less than or greater than 40% of the stand acres. (see table below)

Stand Origin: A determination of the stand origin based on stand history or site conditions indicating if the stand was naturally regenerated, or was artificially regenerated at less than or greater than 40% of the stand acres.

Old Growth Status: Text field indicating the current designation status and type (options include designated old growth, designated future old growth, candidate old growth, naturally disturbed benchmark). (see table below)

Old Growth ID: Unique ID for each old growth site (which can be comprised of multiple stands).

Old Growth Comment: General comment about the old growth site.

Location: A 14 character string consisting of t + township number (3 digits) + range number (2 digits) + range direction (E or W) + section number (2 digits) + the last 5 digits of the stand key (e.g., t14328w0199802).

RAN: A number representing a DNR Division of Forestry Administrative Area. (see table below)

County Number: Number assigned to the county name (see table below)

PLS: A 9 character string based on Public Land Survey data consisting of t + township number (3 digits) + range number (2 digits) + range direction (e or w) + section number (2 digits).

Stand Age Last Inventory: The stand age at the time of the most recent inventory activity (Current Age -(Current Year - Last Inventory Year)).

Lock Stand?: An indicator as to whether the stand is locked for spatial editing. For example, Old Growth stands are locked.

Stand Acres: Computed based on the polygon representing the stand.

Stand Age - Current: The age of the stand today ((Current Year - Last Inventory Year) + Last Inventory Age).

Detailed Citation:

Table Detail:

**dnr_stand_inventory_summary**
Field Name	Valid Values	Definition
Cover Type Code	enumerated	Cover Type
	0	None
	1	Ash
	6	Willow
	9	Lowland Hardwoods
	12	Aspen
	13	Birch
	14	Balm of Gilead
	15	Cottonwood
	17	Hybrid Poplar
	20	Northern Hardwoods
	25	Walnut
	30	Oak
	40	Central Hardwoods
	51	White Pine
	52	Norway Pine
	53	Jack Pine
	54	Scotch Pine
	55	Ponderosa Pine
	61	White Spruce
	62	Balsam Fir
	64	Norway Spruce
	70	Upland Larch
	71	Black Spruce-Lowland
	72	Tamarack
	73	White Cedar
	74	Black Spruce-Upland
	75	Stagnant Spruce
	76	Stagnant Tamarack
	77	Stagnant Cedar
	78	Offsite Aspen
	79	Offsite Oak
	81	Red Cedar
	82	Cutover Area
	83	Lowland Grass
	84	Upland Grass
	85	Lowland Brush
	86	Upland Brush
	87	Duff
	88	Moss
	90	Unknown
	91	Agricultural
	92	Industrial Develop
	93	Recreation Develop
	94	Roads
	95	Rock Outcrop
	96	Permanent Water
	97	Nonpermanent Water
	98	Marsh
	99	Muskeg
Cover Size Code	enumerated	Cover Size
	0	N/A
	1	0-0.9 inches
	2	1-2.9 inches
	3	3-4.9 inches
	4	5-8.9 inches
	5	9-14.9 inches
	6	16-19.9 inches
	7	20-24.9 inches
	8	25 inches +
Cover Density Code	enumerated	Cover Density
	0	0-250 Stems/Acre or 0.0-2.9 Cords/Acre or 0-1,250 Bdf/Acre
	1	251-750 Stems/Acre or 3.0-7.5 Cords/Acre or 1,251-3,750 Bdf/Acre
	2	751-1,250 Stems/Acre or 7.6-12.5 Cords/Acre or 3,751-6,250 Bdf/Acre
	3	1,251-1,750 Stems/Acre or 12.6-17.5 Cords/Acre or 6,251-8,750 Bdf/Acre
	4	1,751-2,250 Stems/Acre or 17.6-22.5 Cords/Acre or 8,751-11,250 Bdf/Acre
	5	2,251-2,750 Stems/Acre or 22.6-27.5 Cords/Acre or 11,251-13,750 Bdf/Acre
	6	2,751-3,250 Stems/Acre or 27.6-32.5 Cords/Acre or 13,751-16,250 Bdf/Acre
	7	3,251-3,750 Stems/Acre or 32.6-37.5 Cords/Acre or 16,251-18,750 Bdf/Acre
	8	3,751-4,250 Stems/Acre or 37.6-42.5 Cords/Acre or 18,751-21,250 Bdf/Acre
	9	4,251-8,000 Stems/Acre or 42.6-100 Cords/Acre or 21,251-100,000 Bdf/Acre
Main Species Code	enumerated	Main Species
	1	Ash, Black
	2	Elm, American
	3	Maple, Silver
	4	Elm, Red
	5	Elm, Rock
	6	Willow (tree)
	7	Elm, Siberian
	12	Aspen, Trembling
	13	Birch, Paper
	14	Balm of Gilead
	15	Cottonwood, Eastern
	16	Aspen, Largetooth
	17	Poplar, Hybrid
	21	Maple, Red
	22	Maple, Sugar
	23	Basswood
	24	Birch, Yellow
	25	Black Walnut
	26	Butternut
	27	Cherry, Black
	28	Buckeye
	29	Birch, Heart-leaved
	31	Aspen, Trembling
	32	Oak, Black
	33	Oak, Northern Pin
	34	Oak, White
	35	Oak, Bur
	38	Ash, White
	39	Ash, Green
	41	Hickory, Bitternut
	42	Hickory, Shagbark
	43	Hackberry
	45	Boxelder
	51	Pine, White
	52	Pine, Norway(Red)
	53	Pine, Jack
	54	Pine, Scotch(Scots)
	55	Pine, Ponderosa
	56	Pine, Austrian
	61	Spruce, White
	62	Fir, Balsam
	63	Spruce, Colorado
	64	Spruce, Norway
	65	Spruce, Black Hills
	71	Spruce, Black
	72	Tamarack
	73	Cedar, White
	81	Cedar, Eastern Red
	82	Hemlock, Eastern
	83	Fir, Douglas
	84	Larch, European
	85	Larch, Japanese
	86	Larch, Siberian
	90	Locust, Honey
	91	Locust, Black
	92	Ironwood
	93	Birch, River
	94	Blue Beech
	99	Misc Species 1
	100	Kentucky Coffeetree
	101	Larch, Hybrid
	102	Maple, Norway
	103	Oak, Chinkapin
	104	Oak, Swamp White
	1000	Misc Species 2
	1001	Misc Species 3
	10005	Alder
	10006	Cherry, Pin
	10007	Chokecherry
	10008	Dogwood
	10009	Hazel
	10010	Maple, Mountain
	10011	Mountain-Ash
	10012	Raspberry
	10013	Willow (shrub)
Main Damage Code	enumerated	Main Damage
	0	None
	1	Defoliators
	2	Bark Beetles
	3	Wood Borers
	4	Spittlebug
	5	White Pine Weevil
	6	Spruce Budworm
	7	Jack Pine Budworm
	8	Shoot Insects (Regen)
	9	Poplar Borer
	10	Root Collar Insects
	12	Emerald Ash Borer
	15	Insects (Other)
	16	White Pine Blister Rust
	17	White Pine Rust With Weevil
	18	Sweet Fern Blister
	20	Siricoccus Shoot Blight
	21	Butternut Canker
	22	Oak Mortality
	23	Dwarf Mistletoe
	24	Diplodia Tip Blight
	25	Hypoxylon Canker
	26	Phellinus
	27	Hypoxylon Canker With Phellinus
	28	Heart Rot
	29	Dutch Elm Disease
	30	Birch Decline
	31	Hardwood Cankers
	32	Needle Rust
	33	Shoestring Root Rot
	35	Oak Wilt
	36	Other Invasive Disease
	40	Diseases (Other)
	41	Beaver
	42	Porcupine
	43	Rabbit - Mice
	44	Deer or Moose
	45	Sapsucker
	50	Animal (Other)
	51	Windthrow
	52	Ice Breakage
	53	Ice Breakage
	54	Fire
	55	Flooding
	56	Hail
	57	Frost Cracks
	60	Environmental (Other)
	61	Mechanical
	62	Chemical
	63	Other Invasive Insect
	99	Unknown
	103	European Spruce Bark Beetle
	108	Winter Moth
	109	Thousand Canker Disease
Stand Origin Code	enumerated	Stand Origin
	0	N/A
	1	Natural
	2	>40% Artificial
	3	<40% Artificial
Old Growth ID	enumerated	Old Growth Status
	5	Designated Old Growth
	7	Designated Future Old Growth
	8	Candidate Old Growth
RAN	enumerated	DNR Division of Forestry Administrative Areas
	111	Bemidji Area
	117	Blackduck Area
	121	Warroad Area
	131	Baudette Area
	142	Backus Area
	161	Park Rapids Area
	199	Red Lake
	221	Deer River Area
	232	Aitkin Area
	234	Hibbing Area
	245	Tower Area
	251	Cloquet Area
	253	Two Harbors Area
	261	Littlefork Area
	312	Little Falls Area
	341	Lewiston Area
	344	Sandstone Area
	351	Cambridge Area
	443	New Ulm Area
County ID	enumerated	County Name
	1	Aitkin
	2	Anoka
	3	Becker
	4	Beltrami
	5	Benton
	6	Big Stone
	7	Blue Earth
	8	Brown
	9	Carlton
	10	Carver
	11	Cass
	12	Chippewa
	13	Chisago
	14	Clay
	15	Clearwater
	16	Cook
	17	Cottonwood
	18	Crow Wing
	19	Dakota
	20	Dodge
	21	Douglas
	22	Faribault
	23	Fillmore
	24	Freeborn
	25	Goodhue
	26	Grant
	27	Hennepin
	28	Houston
	29	Hubbard
	30	Isanti
	31	Itasca
	32	Jackson
	33	Kanabec
	34	Kandiyohi
	35	Kittson
	36	Koochiching
	37	Lac Qui Parle
	38	Lake
	39	Lake of the Woods
	40	LeSueur
	41	Lincoln
	42	Lyon
	43	McLeod
	44	Mahnomen
	45	Marshall
	46	Martin
	47	Meeker
	48	Mille Lacs
	49	Morrison
	50	Mower
	51	Murray
	52	Nicollet
	53	Nobles
	54	Norman
	55	Olmsted
	56	Otter Tail
	57	Pennington
	58	Pine
	59	Pipestone
	60	Polk
	61	Pope
	62	Ramsey
	63	Red Lake
	64	Redwood
	65	Renville
	66	Rice
	67	Rock
	68	Roseau
	69	St. Louis
	70	Scott
	71	Sherburne
	72	Sibley
	73	Stearns
	74	Steele
	75	Stevens
	76	Swift
	77	Todd
	78	Traverse
	79	Wabasha
	80	Wadena
	81	Waseca
	82	Washington
	83	Watonwan
	84	Wilkin
	85	Winona
	86	Wright
	87	Yellow Medicine

Section 6: Distribution

Publisher: Minnesota Department of Natural Resources (DNR)

Publication Date: 09/16/2022

Contact Person Information: Zeb Thomas, GIS Data Systems Coordinator
Minnesota DNR - GIS
500 Lafayette Rd
Saint Paul, MN 55155
Phone: 651-259-5637
Email: zeb.thomas@state.mn.us

Distributor's Data Set Identifier: biota_dnr_forest_inventory

Distribution Liability: The Minnesota Department of Natural Resources General Geographic Data License Agreement is online: http://www.dnr.state.mn.us/sitetools/data_software_license.html

Ordering Instructions: Please visit the download page for this dataset on the Minnesota Geospatial Commons website using the web link below (Online Linkage).

Online Linkage: I AGREE to the notice in "Distribution Liability" above. Clicking to agree will either begin the download process, link to a service, or provide more instructions. See "Ordering Instructions" above for details.

Section 7: Metadata Reference

Metadata Date: 01/06/2023

Contact Person Information: Zeb Thomas, GIS Data Systems Coordinator
Minnesota DNR - GIS
500 Lafayette Rd
Saint Paul, MN 55155
Phone: 651-259-5637
Email: zeb.thomas@state.mn.us

Metadata Standard Name: Minnesota Geographic Metadata Guidelines

Metadata Standard Version: 1.2

Metadata Standard Online Linkage: http://www.mngeo.state.mn.us/committee/standards/mgmg/metadata.htm

This page last updated: 01/06/2023
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