HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Abstract Full Text Free Full Text (PDF) Free Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Web of Science (11) Citing Articles via Google Scholar Google Scholar Articles by Tan, Z. Articles by Gehring, R. M. Search for Related Content PubMed Articles by Tan, Z. Articles by Gehring, R. M. GeoRef GeoRef Citation Agricola Articles by Tan, Z. Articles by Gehring, R. M. Related Collections Soil Organic Matter Carbon Sequestration Spatial Distribution

Taxonomic and Geographic Distribution of Soil Organic Carbon Pools in Ohio

^a School of Natural Resources, The Ohio State Univ., 2021 Coffey Road, Columbus, OH 43210
^b USDA-NRCS, 200 N High Street, Columbus, OH 43215

View larger version (78K): [in a new window]   Fig. 1. Major Land Resource Areas (MLRAs) and magnitudes of soil organic C (SOC) pools estimated using the MLRA-taxonomic approach.

View larger version (124K): [in a new window]   Fig. 2. Taxonomic distribution of soil organic C (SOC) pools estimated using the taxonomic approach and weighted by the area of each land use category within suborders.

View larger version (19K): [in a new window]   Fig. 3. Distribution of the cumulative arithmetic mean of soil organic C (SOC) pools for increasing soil depth.

View larger version (77K): [in a new window]   Fig. 4. Soil organic C pool (SOC) means for three land use categories associated with: (a) soil orders, estimated using taxonomic approach and weighted by the area of each land use within suborders (A, E, H, I, M, and U stand for Alfisols, Entisols, Histosols, Inceptisols, and Ultisols, respectively), and (b) Major Land Resource Areas (MLRAs), estimated using the MLRA-taxonomic approach and weighted by the area of each land use within soil orders. The same letters following numbers indicate no significant differences between them at = 0.05. Actual heights of these bars for Histosols are reduced by a factor of 10 for easy graphing.

View larger version (28K): [in a new window]   Fig. 5. Relationships between the soil organic C (SOC) pools in MLRAs and site variables. Mean values of the SOC pool, drainage class index, and slope percentage were calculated using the MLRA-taxonomic approach. The data of drainage class and slope are from the pedon records in the attribute data table and the areas for area-weighted means are derived from the attribute table associated with the taxon-land use-MLRA theme. Drainage class 0, 1, 2, ...., 6 are assigned for very poorly, poorly, somewhat poorly, moderately well, well, somewhat excessively, and excessively drained, respectively.