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Spatial Distributions of Soil Chemical Conditions in a Serpentinitic Wetland and Surrounding Landscape

^a Agronomy Dep., Purdue Univ., West Lafayette, IN 47907-1150
^b Soil and Water Sciences program, Dep. of Environ. Sci., Univ. of California, Riverside, CA 92521-0424
^c U.S.D.A.-Forest Service, Klamath National Forest, 1312 Fairlane Rd., Yreka, CA 96097
^d U.S.D.A.-Forest Service, Klamath National Forest, Happy Camp Ranger District, Happy Camp, California, 96039

View larger version (28K): [in a new window]   Fig. 1. Location of study area and distribution of serpentinite in northwestern California and throughout the state.

View larger version (64K): [in a new window]   Fig. 2. Block diagram of field area showing geomorphic features, landscape unit boundaries, and sampling locations.

View larger version (63K): [in a new window]   Fig. 3. Spatial distribution of total C in surface soils.

View larger version (70K): [in a new window]   Fig. 4. Spatial distribution of cation-exchange capacity (CEC) in surface soils.

View larger version (67K): [in a new window]   Fig. 5. Spatial distribution of pH in surface soils.

View larger version (66K): [in a new window]   Fig. 6. Spatial distribution of exchangeable Ni in surface soils.

View larger version (56K): [in a new window]   Fig. 7. Spatial distribution of dithionite-extractable Mn in surface soils.

View larger version (65K): [in a new window]   Fig. 8. Spatial distribution of dithionite-extractable Ni in surface soils.

View larger version (62K): [in a new window]   Fig. 9. Spatial distribution of dithionite-extractable Fe in surface soils.

View larger version (70K): [in a new window]   Fig. 10. Spatial distribution of dithionite-extractable Cr in surface soils.

View larger version (63K): [in a new window]   Fig. 11. Spatial distribution of dithionite-extractable Al in surface soils.

View larger version (22K): [in a new window]   Fig. 12. Correlation of dithionite-extractable Al (Ald) vs. Crd in landscape Units 1, 2, 3, and 6 ( = 0.5).

View larger version (17K): [in a new window]   Fig. 13. Correlation of dithionite-extractable Cr (Crd) and Ald vs. Fed in landscape Unit 1 ( = 0.5).