Tree Species

Highlights of Wisconsin's Aspen Resource (Bigtooth and Quaking Aspen)

Region	Acres	%	Cords	%
Northwest	1,385,000	48.0	14,216,000	45.2
Northeast	1,004,700	34.8	9,144,000	29.1
Central	372,100	12.9	4,602,000	14.6
Southwest	85,600	3.0	2,628,000	8.4
Southeast	38,300	1.3	827,000	2.6

1996 Acreage Of Aspen Forest Type: 2,885,700 Acres

1996 Volume Of Aspen Growing Stock In All Forest Types: 31,417,000 Cords

All but 17 percent of the state's aspen timberland is located in the northeastern and northwestern areas of the state.About 36 percent of the state's aspen stands are over 41 years old.

Due to regeneration, reforestation of marginal croplands and heavier harvests of older trees, the aspen forest type age distribution has become more balanced.

1996 Growing Stock: 31,417,000 Cords

1983 - 1995 Net Growth(Average Annual): 939,000 Cords

Removals: 1,045,000 Cords

During the period 1983 - 1995 average annual removals of aspen were about 111 percent of average net annual growth.

Aspen acreage and volume have declined since 1983 due to natural succession and increased harvest levels.

The state continues to support aspen harvests as a management strategy to encourage healthy forests.

Last Revised: Monday July 30 2007