Northern Michigan Forest Productivity Across a Complex Landscape David S. Ellsworth and Kathleen M....
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Transcript of Northern Michigan Forest Productivity Across a Complex Landscape David S. Ellsworth and Kathleen M....
Northern Michigan Forest Productivity Across a Complex Landscape
David S. Ellsworth and Kathleen M. Bergen
Objectives:1) Analyze spatial patterns in ecosystem productivityin a forested landscape in the Upper Great Lakes2) Test a conceptual scheme for regulation of primary production in the region3) Provide a baseline of conditions against which management and environmental change can be evaluated.
Rationale:• It’s difficult to discern how land management has affected ecosystem functioning in addition to other known factors (soils, topography, resources, etc.).•We lack good tools or analytical approaches for mapping forest productivity across the landscape, yet seek to include landscapes in management plans.
Topography& Soils
Resource avail.:Nutrients, water
Climate
Landscape ecosystem variables
Topography& Soils
Resource avail.:Nutrients, water
Climate
Landscape ecosystem variables
Leaf area index, L
Species composition
Canopy N%
Manage-mentvariables
Leaf areaindex, L
Speciescomposition
CanopyN%
Manage-mentvariables
Net PrimaryProductivity
NDVI &reflectance
Data products
Topography& Soils
Resource avail.:Nutrients, water
Climate
Landscape ecosystem variables
Landsat ETM+ NDVI (Normalized Difference Vegetation Index) Image with UMBS Landscape Ecosystems and forest test stand boundaries overlaid. Shows the hypothesized relationship
between variation in productivity (brighter areas equal greater productivity) and landscape ecosystems.
K. Bergen, Environmental Spatial Analysis Laboratory, 2002.
Landscape Ecosystems and Survey plots