A model of permafrost distribution and disturbance sensitivity for Denali National Park, using soil-ecological site inventory information
Citation
Clark, Mark H., A model of permafrost distribution and disturbance sensitivity for Denali National Park, using soil-ecological site inventory information: Institute of Northern Engineering University of Alaska Fairbanks, v. 1, p. 275-278.
Summary
A soil-ecological site survey of Denali National Park and Preserve (Denali) completed in 2004 by the Natural Resources Conservation Service is used to provide a map of Gelisols. soils with permafrost within 2 m of the surface, and their sensitivity to disturbance. Three sensitivity classes are assigned, based on similarities in the degree and rapidity of change to soil properties and plant communities following disturbance, as well as return interval to the pre-disturbance condition. The model aggregates ecological sites into groups with similar plant community structure and species richness, two elements useful in evaluating wildlife habitat. Dynamic soil properties, such as thickness of organic mat. depth to water table, and permafrost, [...]
Summary
A soil-ecological site survey of Denali National Park and Preserve (Denali) completed in 2004 by the Natural Resources Conservation Service is used to provide a map of Gelisols. soils with permafrost within 2 m of the surface, and their sensitivity to disturbance. Three sensitivity classes are assigned, based on similarities in the degree and rapidity of change to soil properties and plant communities following disturbance, as well as return interval to the pre-disturbance condition. The model aggregates ecological sites into groups with similar plant community structure and species richness, two elements useful in evaluating wildlife habitat. Dynamic soil properties, such as thickness of organic mat. depth to water table, and permafrost, may also be estimated for the various ecological states identified for each sensitivity class. This information is useful for estimating transient carbon budgets in soils and hydrologic functions, as well as indicating soils that are likely to be impacted by climate change. Gelisols considered highly sensitive to disturbance comprise 118.185 ha. or about 4% of Denali. Moderately sensitive Gelisols comprise 445.192 ha, or 18% of Denali. Gelisols considered low in sensitivity include 391;760 ha, or about 16% of Denali.