USDA Forest ServiceSkip navigational links  
 Northern Global Change Research Program
 Go to: NGCRP Home Page
 Go to:
 Go to: About Us / Staff
 Go to: What's New
Back to: Publications & Products
Go to: Research & Development
Go to: NGCRP Site Map
 Go to: NE Station
 Go to: USGCRP

Go to:Bibliography

Go to:GIS Data

Go to:Maps & Posters

Viewing:Presentations

Back to:Proceedings

Go to:Publications

 
 Norhtern Global Change Research Program Logo
 United States Department of Agriculture Forest Service. USDA logo which links to the department's national site. Forest Service logo which links to the agency's national site.
 

Publications & Products

PROCEEDINGS: Index of Abstracts

SPATIAL PATTERNS IN CARBON STORAGE IN A LAKE STATES' LANDSCAPE

1-Department of Soil, Water, and Climate, University of Minnesota, St. Paul, MN 55108. 2-Natural Resources Management Program, Western Carolina University, Cullowhee, NC 28723.

We estimated total organic carbon storage (C -- kg m-2) in biomass, forest floor, and soil for a gently undulating glacial outwash landscape in east-central Minnesota (45° 25'N, 93° 10'W). Abandoned agricultural tracts are common, and nearly 40 percent of the area is wet mineral or organic soil. Quantitative models based on 745 point-observations were used to define empirical relationships between C storage and landscape variables describing forest cover type and terrain characteristics. Exponential regressions for individual cover types explained from 31 to 70 percent (p<0.05) of the variation in soil C and 39 percent (p<0.05) of the variation in peatland depth. Spatial patterns and quantities of C storage were estimated by applying these functions to a digital geographic database of cover type and terrain attributes. Landscape scale (~1:20,000) estimates of soil C followed a bimodal distribution with means at 4 kg m-2 (mineral soils) and 130 kg m-2 (peatlands). Biomass carbon for individual cover types ranged from 1 to 13 kg m-2. Total C storage in all components, based on a 1m soil depth, was 32 kg m-2, with over 90 percent stored in peatlands.