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Detecting nutrient pool changes in rocky forest soils

^a Dep. of Biology and Ecology Center, Utah State Univ., Logan, UT 84322
^b College of Forest Resources, Univ. of Washington, Box 352100, Seattle, WA 98195
^c Yale School of Forestry and Environmental Studies, Greeley Lab., 310 Prospect Street, New Haven, CT 06511
^d Dep. of Forest, Range, and Wildlife Sciences and Ecology Center, Utah State Univ., Logan, UT 84322

View larger version (13K): [in a new window]   Fig. 1. Carbon and N storage estimates, standardized to 1 cm, for samples taken in the forest floor, 0- to 3-, 3- to 6-, 6- to 15-, 15- to 30-, 30- to 45-, and 45- to 60-cm soil depth increments. Estimates do not include C and N stored in coarse (>2 mm) root material. Mean values are reported ±1 standard deviation for the 18 plots sampled. Note that storage and the variation in storage declines with depth. Equations describing the observed decline in storage with soil depth are reported in the results.