The Calhoun Experimental Forest

Federal Geographic Data Committee (FGDC) Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Richter, D.D. and D. Markewitz
Publication_Date: 2001
Title: The Calhoun Experimental Forest
Edition:
Geospatial_Data_Presentation_Form:
Series_Information:
Series_Name: Understanding Soil Change : Soil Sustainability over Millennia, Centuries, and Decades
Issue_Identification:
Publication_Information:
Publication_Place:
Publisher: Cambridge University Press
Other_Citation_Details:
Online_Linkage: http://calhoun.env.duke.edu/
Description:
Abstract:
This experiment began in 1962. The site history was a)pre-1800: Eastern North American deciduous forest; b)1800-1957: cotton,corn,wheat,pasture. The site was converted to forest in 1957, and the "time zero" sample was taken in 1962 from 16 permanent plots at depths 0-7.5,7..5-15,15-35,35-60 cm. ALL samples from time zero are archived at Duke University. MEASUREMENTS MADE DURING THE EXPERIMENT a) Vegetation measurements made and frequency 1-Total above-ground dry matter: Approx every 5 years. 2-Above & Below-ground biomass and forest floor. Biomass estimated via allometry is measured approximately every five years. Estimates of nutrient contents are made based on nutrient sampling in 1990. Forest floor (O horizon) measured only in 1992, complete with nutrient analyses. b) Soil sampling Time zero soil measurements taken. Details of soil sampling method: Eight of the 16 permanent plots are resampled every 5 or 6 years. From each plot, a 2 cm diameter punch tube is used to collect "at least 20" individual samples per plot. Areas of the eight repeated-sample plots are 0.03 and 0.06 ha (4 plots each). Samples are taken with a stratified RANDOM collection from within the plot.Soil is separated into layers. Details of measuring depths and soil layers: 0-7.5,7.5-15,15-35,35-60 cm: 1962,68,72,77,82,90. 60-800 cm samples are taken from 16 layers that were collected only in 1992-94. c) Soil measurements made and frequency Total carbon: 1962,1968, 1977, 1982, 1990 Method of measuring total carbon: CHN analyzer, dry combustion. Wet combustion also. Biomass carbon: 50% of biomass, to be corrected 1995-96 Method of measuring biomass carbon: Sampling of biomass components and CHN analyzer. Carbon dioxide evolution: 2 or 3 weeks/>2 yr Method of measuring carbon dioxide evolution: From 4 or 8 of the permanent plots, 10 sites are measured for CO2 evolution per plot every 2 or 3 weeks. Infrared detector (PP system) is used to measure efflux. Also CO2 Depth Profile. Measurements are also made of CO2 and Rn222 concentrations of soil atmosphere reservoirs placed between 7.5 and 600 cm depth. Total nitrogen: 1962,68,72,77,82,90 Method of measuring total nitrogen: CHN- and Kjeldahl-N Soil bulk density or weight: 1990 (only in detailed study of 0-165 cm) Method of measuring soil bulk density or weight: From 3 faces of 4 large soil pits, 6cm diameter Bulk Density sampler was used TWICE on each face. Other nutrients: Soil solutions have been collected and analyzed per 117. below. Atmospheric inputs: Wet-only and bulk deposition has been collected and analyzed for DOC and all major ions (H,NH4,Ca,Mg,K,Na,Cl,NO3,SO4,HCO3) every 2 weeks for more than two years. Soil solutions (0 horizon, 0.15,0.6,1.75,4 and 6 m) and canopy throughfall have been collected and analyzed from the eight permanent plots for more than two years. Other measurements: 1. Gas Rn-222 measured at the same depths as CO2 to estimate efflux of CO2 via Fick's equations. 2. Plant (tree) and forest floor accumulations of nutrients, Si, +Al have been measured to evaluate biomass accumulations by the post-agricultural forest. d) Details of the meteorological station Nearest meteorological station to the site: A composite of on-site and nearby (<25 km) stations are used. The meteorological station is automatic. e) Meteorological data available and frequency Rainfall: Daily Air temperature: Daily Soil temperature: Every 3 weeks at 15 cm depth Wind speed: Daily Net Radiation: Daily Relative humidity: Daily Potential evapotranspiration: Daily measured/calculated by PROSPER hydrologic model of Goldstein, Luxmoore, Huff, Vose and Swank. A process, daily time step model of evapotranspiration and soil drainage. f) Isotope measurements available and frequency Total soil carbon 14 measurements: 1962, 1968, 1972, 1977, 1982, 1990 Carbon dioxide carbon 14 measurements: Pending Details of isotope measurements: Richter et al (1994) North Am. Forest Soils Conf. 8th. g) Archived samples available Archived soil samples: Six times dating from 1962 Other archived samples available: Rain, throughfall, soil solutions every 2 weeks 1992-1994. This information was compiled for the GCTE-SOMNET Database, Pete Smith, Pete Falloon, David Powlson, and Jo Smith. Soil Science Department, IACR-Rothamsted, UK.
Purpose:
Not Available
Supplemental_Information:
REFERENCE: Richter, D.D. & Markewitz, D. (1995a) How deep is the soil ? Bioscience: 600-606.
Supplemental_Information:
REFERENCE: Richter, D.D. & Markewitz, D. (1995b) Carbon changes during the growth of loblolly pine on fromerly cultivated soil: The Calhoun Experimental Forest. In: Evaluation of soil organic matter models using existing long-term datasets (ed: D.S. Powlson, P. Smith & J.U. Smith), NATO ASI Series I, Volume 38, Springer-Verlag, Heidelberg: 397-409.
Supplemental_Information:
REFERENCE: Richter, D.D., Markewitz, D., Duscombe, J.K., Heine, P.R., Wells, C.G., Staunes, A., Allen, H.L., Urrego, B., Harrison, K. & Bonani, G. (1994a) Carbon cycling in a loblolly pine forest: Implications for the missing carbon sink and for the concept of soil. Proceedings of the Eighth North American Forest Soils Conference, Gainesville, Soil Science Society of America: 233-251
Supplemental_Information:
REFERENCE: Richter, D.D., Markewitz, D., Wells, C.G., Allen, H.L., April, R., Heine, P.R. & Urrego, B. (1994a) Soil chemical change during three decades in an old-field loblolly pine (Pinus taeda L.) ecosystem. Ecology 75: 1463-1473.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19620101
Ending_Date: Unknown
Currentness_Reference:Unknown
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: -81.6
East_Bounding_Coordinate: -81.4
North_Bounding_Coordinate: 34.6
South_Bounding_Coordinate: 34.4
Keywords:
Theme:
Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS
Theme_Keyword_Thesaurus: GCMD PLATFORM
Theme_Keyword_Thesaurus: ANCILLARY KEYWORDS
Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY
Theme_Keyword_Thesaurus: DATA SET LANGUAGE
Theme_Keyword: EARTH SCIENCE > AGRICULTURE > FOREST SCIENCE > FOREST MANAGEMENT
Theme_Keyword: EARTH SCIENCE > AGRICULTURE > FOREST SCIENCE > FOREST YIELDS
Theme_Keyword: EARTH SCIENCE > AGRICULTURE > SOILS > CARBON > CARBON DIOXIDE
Theme_Keyword: EARTH SCIENCE > AGRICULTURE > SOILS > CARBON > TOTAL CARBON
Theme_Keyword: EARTH SCIENCE > AGRICULTURE > SOILS > NITROGEN > TOTAL NITROGEN
Theme_Keyword: EARTH SCIENCE > AGRICULTURE > SOILS > ORGANIC MATTER
Theme_Keyword: EARTH SCIENCE > AGRICULTURE > SOILS > SOIL BULK DENSITY
Theme_Keyword: EARTH SCIENCE > AGRICULTURE > SOILS > SOIL FERTILITY
Theme_Keyword: EARTH SCIENCE > AGRICULTURE > SOILS > SOIL GAS/AIR > RN-222
Theme_Keyword: EARTH SCIENCE > AGRICULTURE > SOILS > SOIL PH
Theme_Keyword: EARTH SCIENCE > AGRICULTURE > SOILS > SOIL RESPIRATION
Theme_Keyword: EARTH SCIENCE > AGRICULTURE > SOILS > SOIL TEMPERATURE
Theme_Keyword: EARTH SCIENCE > BIOSPHERE > VEGETATION > BIOMASS
Theme_Keyword: EARTH SCIENCE > BIOSPHERE > VEGETATION > CANOPY CHARACTERISTICS
Theme_Keyword: EARTH SCIENCE > BIOSPHERE > VEGETATION > CARBON
Theme_Keyword: EARTH SCIENCE > BIOSPHERE > VEGETATION > FOREST COMPOSITION/VEGETATION STRUCTURE
Theme_Keyword: EARTH SCIENCE > BIOSPHERE > VEGETATION > LITTER CHARACTERISTICS
Theme_Keyword: EARTH SCIENCE > LAND SURFACE > SOILS > CARBON > CARBON DIOXIDE
Theme_Keyword: EARTH SCIENCE > LAND SURFACE > SOILS > ORGANIC MATTER
Theme_Keyword: EARTH SCIENCE > LAND SURFACE > SOILS > SOIL BULK DENSITY
Theme_Keyword: EARTH SCIENCE > LAND SURFACE > SOILS > SOIL FERTILITY
Theme_Keyword: EARTH SCIENCE > LAND SURFACE > SOILS > SOIL GAS/AIR > RN-222
Theme_Keyword: EARTH SCIENCE > LAND SURFACE > SOILS > SOIL PH
Theme_Keyword: EARTH SCIENCE > LAND SURFACE > SOILS > SOIL RESPIRATION
Theme_Keyword: EARTH SCIENCE > LAND SURFACE > SOILS > SOIL TEMPERATURE
Theme_Keyword: GROUND-BASED OBSERVATIONS
Theme_Keyword: Carbon Cycling
Theme_Keyword: Loblolly Pine
Theme_Keyword: Long Term Experiments
Theme_Keyword: Piedmont
Theme_Keyword: Pinus Taeda (l.)
Theme_Keyword: Somnet
Theme_Keyword: FARMING
Theme_Keyword: BIOTA
Theme_Keyword: ECONOMY
Theme_Keyword: GEOSCIENTIFIC INFORMATION
Theme_Keyword: ENGLISH
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > NORTH CAROLINA
Temporal:
Temporal_Keyword_Thesaurus: GCMD
Temporal_Keyword: Varies By Measurement
Access_Constraints: none
Use_Constraints:
Link to the following location to view data use policy of SOMNET members: 'http://www.res.bbsrc.ac.uk/soils/somnet/members/policy.html'
Back to Top
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
There are at least 8 replicates in the experiment. The experiment has a randomized plot design. There are control plots described as follows: In 1992-93 a set of sample plots were established within 10 km of the Calhoun Experimental Forest. Soils were derived from the same soil series as the Calhoun, but supported 40-50 yr pine, old uneven aged hardwood, pasture or row (arable) crops. All of these plots have been sampled and analysed for total soil C, N and many other soil properties. The intent was to give a restricted control. See Richter et al (1994) Proceedings of the Eigth North American Forest Soils Conference. We believe in not removing data from the data set if there are no analytical reasons to suspect the quality of the analysis. More than 95% of soil samples are archived, so old total N, C, Ca, Mg, K data have been checked with new analyses. See Richter et al (1994) Ecology, 75 no. 5.
Logical_Consistency_Report:
Not Available
Completeness_Report:
Not Available
Lineage:
Process_Step:
Process_Description:
Not Available
Process_Date: Unknown
Back to Top
Spatial_Reference_Information:
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:
Altitude_Datum_Name: Not Available
Altitude_Resolution: 7cm
Altitude_Distance_Units: Not Available
Altitude_Encoding_Method: Implicit coordinate
Depth_System_Definition:
Depth_Datum_Name: Not Available
Depth_Resolution: 7cm
Depth_Distance_Units: Not Available
Depth_Encoding_Method: Implicit coordinate
Back to Top
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: DUKE/NICOLAS > Nicholas School of the Environment and Earth Sciences, Duke University
Contact_Person: DANIEL D. RICHTER
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Duke University
Address: The Forest, Soil and Water Lab
Address: Nicholas School of the Environment and Earth Sciences
Address: Box 90328
City: Durham
State_or_Province: NC
Postal_Code: 27708-0328
Country: USA
Contact_Voice_Telephone: 919-613-8000
Contact_Voice_Telephone: 919-613-8031
Contact_Facsimile_Telephone: 919-684-8741
Contact_Electronic_Mail_Address: drichter@env.duke.edu
Resource_Description: DU.CalhounForest
Distribution_Liability:
Not Available
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: Not Available
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://www.nicholas.duke.edu/
Access_Instructions:
DATA CENTER URL
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://www.res.bbsrc.ac.uk/soils/somnet/index.html...
Access_Instructions:
This URL links to the GCTE-SOMNET home page where additional project information can be obtained. This site is currently in a data sharing phase of the network where actual data will become available shortly, at different levels of accessibility. Please follow this Link for more information.
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://sedimentary.env.duke.edu/archive/indexarchi...
Access_Instructions:
This URL is the location of the Forest, Soil and Water Lab data archive.
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://calhoun.env.duke.edu/
Access_Instructions:
Access to information about The Calhoun Experimental Forest study
Fees: Not Available
Back to Top
Metadata_Reference_Information:
Metadata_Date: 19990920
Metadata_Review_Date: 20051206
Metadata_Future_Review_Date: 20010920
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: GCMD User Support Office
Contact_Organization: NASA Global Change Master Directory
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Not Available
City: Lanham
State_or_Province: MD
Postal_Code: 20706
Country: USA
Contact_Voice_Telephone: Not Available
Contact_Electronic_Mail_Address: gcmduso@gcmd.gsfc.nasa.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Back to Top
[ Update this Record ]


Link to Web Site