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Estimating Organic Carbon from Loss-On-Ignition in Northern Arizona Forest Soils

^a Public Lands Inst. and School of Life Sciences, Univ. of Nevada-Las Vegas, 4505 S. Maryland Pkwy., Las Vegas, NV 89154-2040
^b Dep. of Geology, Northern Arizona Univ., Flagstaff, AZ 86011-4099

View larger version (16K): [in this window] [in a new window]   Fig. 1. Cumulative loss-on-ignition through time for the same set of samples from northern Arizona ponderosa pine forest soils. Data are shown for 0- to 15-cm soils from aspen and black cinder ecosystem types (n = 3 each) at extremes of loss-on-ignition and as an overall mean consisting of three samples from each of 10 ecosystem types.

View larger version (21K): [in this window] [in a new window]   Fig. 2. Relationship between loss-on-ignition (300°C, 2 h) and organic C for 100 samples each of (a) 0- to 15-cm and (b) 15- to 50-cm depths of northern Arizona ponderosa pine forest soils.