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    Author(s): J. C. Bell; D. F. Grigal; P. C. Bates; C. A. Butler
    Date: 1996
    Source: In: Hom, John; Birdsey, Richard; O'Brian, Kelly, eds. Proceedings 1995 meeting of the northern global change program; Gen. Tech. Rep. NE-214. Radnor, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station: 198-202.
    Publication Series: General Technical Report (GTR)
    Station: Northeastern Research Station
    PDF: View PDF  (357.43 KB)

    Description

    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 1 m soil depth, was 32 kg m-2, with over 90 percent stored in peatlands.

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    Citation

    Bell, J. C.; Grigal, D. F.; Bates, P. C.; Butler, C. A. 1996. Spatial patterns in carbon storage in a lake states'' landscape. In: Hom, John; Birdsey, Richard; O''Brian, Kelly, eds. Proceedings 1995 meeting of the northern global change program; Gen. Tech. Rep. NE-214. Radnor, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station: 198-202.

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