Implementation of the Century Ecosystem Model for an Eroding Hillslope in Mississippi

U.S. Geological Survey Open-File Report 98-440
Version 1.0

By Jodie Sharpe^1,2, Jennifer W. Harden¹, Seth Dabney³, Dennis Ojima⁴, and and William Parton⁴

1998

¹U.S. Geological Survey, 345 Middlefield Rd. M.S. 962, Menlo Park, CA 94025
²Present address: 3930 NW Witham Hill Dr. #198-V, Corvallis OR 97330
³U.S.Department of Agriculture-Agricultural Research Service, Oxford, MS 38655
⁴National Resource Ecology Lab, Colorado State University, Fort Collins, CO 80522

The objective of this study was to parameterize and implement the Century ecosystem model for an eroding, cultivated site near Senatobia, in Panola County, Mississippi, in order to understand the loss and replacement of soil organic carbon on an eroding cropland. The sites chosen for this study are located on highly eroded loess soils where USDA has conducted studies on rates of soil erosion. We used USDA sediment data from the study site and historical erosion estimates from the nearby area as model input for soil loss; in addition, inputs for parametization include particle-size data, climate data, and rainfall/runoff data that were collected and reported in companion papers. A cropping scenario was implemented to simulate a research site at the USDA watershed 2 at the Nelson Farm. Model output was compiled for comparison with data collected and reported in companion reports; interpretive comparisons are reported in Harden et al, in press.

CONTENTS

1. of98-440.pdf - primary document

You must have Adobe Acrobat Reader installed.

If you wish to download the latest version of Acrobat Reader free of charge, click here.

2. Downloadable Data Files

APPENDIX A

• Minimum erosion [text file]
• Minimum erosion [64K Excel file]
• Maximum erosion [text file]
• Maximum erosion [64K Excel file]

This open-file report is available for purchase from:

USGS Information Services, Box 25286,
Federal Center, Denver, CO 80225
telephone: 303-202-4210; e-mail: infoservices@usgs.gov

DISCLAIMERS

This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards or with the North American Stratigraphic code. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although all data and software released with this open file have been used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and related materials and (or) the functioning of the software.

[an error occurred while processing this directive]