Data from: Soil organic carbon and isotope composition response to topography and erosion in Iowa

Principal Investigator(s):  View help for Principal Investigator(s) US Department of Agriculture; National Agricultural Library

Version:  View help for Version V1

Name File Type Size Last Modified
Data_Dictionary_3.csv text/csv 6.6 KB 06/26/2026 11:30:AM
Soil_properties_0.csv text/csv 15.2 KB 06/26/2026 11:30:AM
Topograhic_metrics_0.csv text/csv 20.8 KB 06/26/2026 11:30:AM
adc_metadata.json application/json 22.9 KB 06/26/2026 03:04:PM
catalog_detail.html text/html 11.1 KB 06/26/2026 11:30:AM

Project Citation: 

US Department of Agriculture, and National Agricultural Library. Data from: Soil organic carbon and isotope composition response to topography and erosion in Iowa. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2026-06-26. https://doi.org/10.3886/E250278V1

Project Description

Project Title:  View help for Project Title Data from: Soil organic carbon and isotope composition response to topography and erosion in Iowa
Summary:  View help for Summary The dataset includes topographic information, soil properties, and 137Cs levels collected from a 15 ha cropland under soybean/maize (C3/C4) rotation in June 2002. The cropland is located in the central-western part of the Walnut Creek watershed, Story County, Iowa. 128 sampling locations were collected and three soil samples were obtained using a 3.2 cm-diameter push probe from the 0 to 30 cm soil layer within a 1 m × 1 m quadrat at each sampling location. Deeper soil samples were collected from 30 to 50 cm layers in locations where sediment deposition was observed. The three samples from each sampling location were mixed and analyzed to determine soil properties, SOC content and its carbon (C) isotope composition (C12 to C13 ratio), and 137Cs levels. For landscape topography of each sampling location, topographic metrics were derived from a digital elevation mode using LiDAR (Light Detection and Ranging) data. These data are useful in investigating the fate of eroded SOC in croplands and its responses to landscape topography.

For more information about this dataset contact: Gregory W. McCarty: [email protected] Xia Li: [email protected]


Resources in this dataset:

Resource Title: Topographic metrics of the study site. File Name: Topograhic_metrics.csvResource Description: The file includes fourteen topographic metrics. All of the selected metrics were reported to affect soil erosion and deposition in the literature.

Resource Title: Topographic metrics of the study site.

File Name: Topograhic_metrics.csv

Resource Description: The file includes fourteen topographic metrics. All of the selected metrics were reported to affect soil erosion and deposition in the literature.

Resource Title: Soil properties of the study site. File Name: Soil_properties.csvResource Description: Soil texture, soil redistribution, soil organic carbon and its isotopes were included. Soil redistribution were calculated using the Mass Balance model II (MBMII) by Walling et al. (2011)

Resource Title: Soil properties of the study site.

File Name: Soil_properties.csv

Resource Description: Soil texture, soil redistribution, soil organic carbon and its isotopes were included. Soil redistribution were calculated using the Mass Balance model II (MBMII) by Walling et al. (2011)

Resource Title: Data Dictionary. File Name: Data_Dictionary.csvResource Description: Data definitions and units for the variables in the soil property and topographic metric data files

Resource Title: Data Dictionary.

File Name: Data_Dictionary.csv

Resource Description: Data definitions and units for the variables in the soil property and topographic metric data files
Original Distribution URL:  View help for Original Distribution URL https://agdatacommons.nal.usda.gov/articles/dataset/Data_from_Soil_organic_carbon_and_isotope_composition_response_to_topography_and_erosion_in_Iowa/24660810

Scope of Project

Subject Terms:  View help for Subject Terms Agroecosystem & Environment > Erosion; Agroecosystem & Environment > Carbon dynamics; topography; NP212
Geographic Coverage:  View help for Geographic Coverage Iowa
Time Period(s):  View help for Time Period(s) 6/1/2002 – 6/1/2002
Data Type(s):  View help for Data Type(s) observational data
Collection Notes:  View help for Collection Notes DOI: 10.15482/USDA.ADC/1408098 Citation: Li, Xia; McCarty, Gregory W. (2017). Data from: Soil organic carbon and isotope composition response to topography and erosion in Iowa. Ag Data Commons. https://doi.org/10.15482/USDA.ADC/1408098 (Downloaded 2026-06-26)


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V1 [2026-06-26]

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