Section 1537.20  Description of Forest Types to be Managed

a)         A description is required of the present forest stands and the conditions that created the existing stand structure, species composition, forest cover types and/or forest site-types, and whether the main canopy stand is even-aged or all-aged.

b)         An inventory of the forest stands conducted in accordance with the procedure outlined in the Illinois Forest Inventory Data Processing System (IFIDP) or any other procedures which will be approved by the Department provided the criteria for accuracy are met.  The IFIDP procedure is filed in all Division of Forest Resource, DNR District Offices and available to the public for review.  Trees from 2" DBH should be included in the inventory and accuracy should be + or - 10% of the basal area at the 66% confidence level.  The inventory described is not required for stands less than 5 acres.

c)         Inventory and field data must be delivered to the District Forester for review.  The review will determine if all of the information required for the plan is present, complete, and meets accuracy requirements (+ or - 10% of the basal area at the 66% confidence level).

d)         Forest site-types are described in "Recommended Silviculture and Management Practices for Illinois Hardwood Forest Types" (1972), Extension Forester, Illinois Cooperative Extension Service, University of Illinois, 110 Mumford Hall, Urbana, IL 61081 (no later editions or amendments are included); Illinois Technical Forestry Association and forest cover types as described in "Forest Cover Types of the United States and Canada", Society of American Foresters (1980) 5400 Grosvenor Lane, Washington, D.C., 20014  (no later editions or amendments are included).  These references are filed with the Division of Forest Resources, Department of Natural Resources District Offices and with the State Library and available to the public for review.

e)         Forest Cover – Types

Bald Cypress

Bald Cypress, Tupelo

Beech, Sugar Maple

Black Ash, American Elm, Red Maple

Black Locust

Black Oak

Black Willow

Bur Oak

Chestnut Oak

Cottonwood

Eastern Red Cedar

Northern Pin Oak

Northern Red Oak

Northern White Cedar

Overcup Oak

Pin Oak, Sweetgum

Post Oak, Blackjack Oak

River Birch, Sycamore

Sassafras, Persimmon

Silver Maple, American Elm

Sugar Berry, American Elm

Sugar Maple

Sugar Maple, Basswood

Swam Chestnut Oak, Cherrybark oak

Sweetgum, Yellow Poplar

Sweetgum, Willow Oak

Sycamore, Sweetgum, American Elm

Tamarack

Yellow Poplar

Yellow Poplar, White Oak, Northern Red Oak

Water Tupelo

White Oak

White Oak, Black Oak, Northern Red Oak

White Pine

f)          Forest Site – Types

Oak Hickory

Mixed Oak

Mixed Hardwoods

Mixed Soft Hardwoods

Mixed Hard Hardwoods

Mixed Bottomland Hardwoods

Sycamore, Cottonwood, Willow

Cypress

(Source:  Amended at 14 Ill. Reg. 18222, effective October 29, 1990)