Recent forest cover type transitions and landscape structural changes in northeast Minnesota, USA

Landsat TM satellite data covering an approximate 5-year interval (1990–1995) were used to quantify spatial pattern and transition rates between forest ecological states for a 2.76 million ha region in northeast Minnesota. Changes in forest cover were stratified by Ecological Subsection, management status, and by ownership categories using a 1995 digital ownership layer. Approximately 4.2% of the 1990 mature forested area was converted to early successional types by 1995. Of this 4.2%, private lands accounted for 33%, federal lands 31%, county lands 20% and state lands 16%. Notable conversion percentages by cover type category were spruce-fir (−5.3%), aspen-birch(−4.7%), jack pine (−4.6%) and black spruce(−3.0%). Transition rates were also adjusted to fit ten-year time intervals. Shannon-Weaver Eveness and edge density of cover types increased over the study period as relative contagion and interior forest area decreased. These trends suggest both smaller patches and a more even distribution of cover types. Area of upland conifers, lowland conifers and lowland hardwoods decreased while the area of mature upland hardwoods increased in most patch size classes except the > 500 ha class which showed a substantial decrease in area. The area of early successional types increased in most patch size classes. Non-industrial private forestland had the lowest proportion of interior forest of all ownership categories -decreasing by 13.5% in five years. Smaller average cut-unit size sand uncoordinated forest management is the likely cause since cutting rates between private and public forestland were similar.

[1]  J. Roland,et al.  Reduced transmission of forest tent caterpillar (Lepidoptera : Lasiocampidae) nuclear polyhedrosis virus at the forest edge , 1995 .

[2]  James E. Vogelmann,et al.  Use of thematic mapper data for the detection of forest damage caused by the pear thrips , 1989 .

[3]  Peter T. Wolter,et al.  Improved forest classification in the northern Lake States using multi-temporal Landsat imagery , 1995 .

[4]  T. Crow,et al.  Simulating the Effects of Alternative Forest Management Strategies on Landscape Structure , 1996 .

[5]  Mark A. White,et al.  Old-growth forest landscape transitions from pre-European settlement to present , 1994, Landscape Ecology.

[6]  W. Cohen,et al.  Detecting landscape changes in the interior of British Columbia from 1975 to 1992 using satellite imagery , 1998 .

[7]  Malcolm L. Hunter,et al.  Wildlife, Forests and Forestry: Principles of Managing Forests for Biological Diversity , 1989 .

[8]  T. Spies,et al.  Developing alternative forest cutting patterns: A simulation approach , 1993, Landscape Ecology.

[9]  Edward A. Johnson,et al.  Historical vegetation change in the Kananaskis Valley, Canadian Rockies , 1987 .

[10]  S. Goetz,et al.  Large-Scale Patterns of Forest Succession as Determined by Remote Sensing , 1991 .

[11]  J. Reynolds,et al.  A Simulation Experiment to Quantify Spatial Heterogeneity in Categorical Maps , 1994 .

[12]  K. McGarigal,et al.  FRAGSTATS: spatial pattern analysis program for quantifying landscape structure. , 1995 .

[13]  H. Olsson.  Changes in satellite-measured reflectances caused by thinning cuttings in Boreal forest , 1994 .

[14]  Jerry F. Franklin,et al.  Creating landscape patterns by forest cutting: Ecological consequences and principles , 1987, Landscape Ecology.

[15]  J. Reynolds,et al.  A new contagion index to quantify spatial patterns of landscapes , 1993, Landscape Ecology.

[16]  Clifford E. Ahlgren,et al.  Phenological Observations of Nineteen Native Tree Species in Northeastern Minnesota , 1957 .

[17]  Thomas A. Spies,et al.  Dynamics and Pattern of a Managed Coniferous Forest Landscape in Oregon , 1994 .

[18]  Mark A. White,et al.  Comparing Spatial Pattern in Unaltered Old-Growth and Disturbed Forest Landscapes. , 1993, Ecological applications : a publication of the Ecological Society of America.

[19]  James E. Vogelmann,et al.  Comparison between two vegetation indices for measuring different types of forest damage in the north-eastern United States , 1990 .

[20]  J. C. Price.  Calibration of satellite radiometers and the comparison of vegetation indices , 1987 .

[21]  G. Niemi,et al.  Lack of edge effect in nesting success of breeding birds in managed forest landscapes , 1996 .

[22]  T. Crow,et al.  Modeling the effects of forest harvesting on landscape structure and the spatial distribution of cowbird brood parasitism , 1994, Landscape Ecology.

[23]  B. Rock,et al.  Assessing forest damage in high-elevation coniferous forests in vermont and new Hampshire using thematic mapper data , 1988 .

[24]  Eric J. Gustafson,et al.  Expanding the scale of forest management: allocating timber harvests in time and space , 1996 .

[25]  Mark A. White,et al.  Effects of changing landscape pattern and U. S. G. S. land cover data variability on ecoregion discrimination across a forest-agriculture gradient , 2004, Landscape Ecology.

[26]  C. Oliver,et al.  Choosing a forest vision. , 1999 .

[27]  Raymond L. Czaplewski,et al.  Multistage remote sensing: toward an annual national inventory , 1999 .

[28]  J. Kouki,et al.  Effect of forest stand and edge characteristics on the vulnerability of jack pine stands to jack pine budworm (Choristoneura pinus pinus) damage , 1997 .

[29]  F. Swanson,et al.  LANDSCAPE PATTERN RESPONSE TO CHANGES IN PATTERN GENERATION RULES: LAND-USE LEGACIES IN FORESTRY , 1994 .

[30]  M. L. Heinselman,et al.  The Boundary Waters Wilderness ecosystem , 1996 .

[31]  M. L. Heinselman.  Fire in the Virgin Forests of the Boundary Waters Canoe Area, Minnesota , 1973, Quaternary Research.

[32]  P. Reich,et al.  Neighborhood effects, disturbance, and succession in forests of the western Great Lakes Region1 , 1995 .

[33]  Monica G. Turner,et al.  Land Ownership and Land‐Cover Change in the Southern Appalachian Highlands and the Olympic Peninsula , 1996 .

[34]  David J. Mladenoff,et al.  A Systems Analysis of the Global Boreal Forest: The southern boreal–northern hardwood forest border , 1992 .