CATALOG DOCUMENTATION EMAP-AGRICULTURAL LANDS PROGRAM LEVEL DATABASE 1994 AND 1995 MID ATLANTIC DATA REGIONALIZATION CROSS-REFERENCE DATA FOR EMAP-AGRICULTURAL LANDS SAMPLES TABLE OF CONTENTS 1. DATA SET IDENTIFICATION 2. INVESTIGATOR INFORMATION 3. DATA SET ABSTRACT 4. OBJECTIVES AND INTRODUCTION 5. DATA ACQUISITION AND PROCESSING METHODS 6. DATA MANIPULATIONS 7. DATA DESCRIPTION 8. GEOGRAPHIC AND SPATIAL INFORMATION 9. QUALITY CONTROL/QUALITY ASSURANCE 10. DATA ACCESS 11. REFERENCES 12. TABLE OF ACRONYMS 13. PERSONNEL INFORMATION 1. DATA SET IDENTIFICATION 1.1 Title of Catalog document EMAP-Agricultural Lands Program Level Database 1994 and 1995 MAIA Data Regionalization Cross-Reference Data For EMAP-Agricultural Lands Samples 1.2 Authors of the Catalog entry George Hess, North Carolina State University Dan Fiscus, North Carolina State University 1.3 Catalog revision date 18 June 1997 1.4 Data set name crossref.txt lrrnames.txt mlranames.txt econames.txt 1. 5 Task Group Agricultural Lands 1.6 Data set identification code 14 1.7 Version 001 ------- 1.8 Requested Acknowledgment If you plan to publish these data in any way, EPA requires a standard statement for work it has supported: "Although the data described in this article have been funded wholly or in part by the U. S. Environmental Protection Agency through its EMAP-Aural Lands Program, it has not been subjected to Agency review, and therefore does not necessarily reflect the views of the Agency and no official endorsement should be inferred." 2. INVESTIGATOR INFORMATION 2.1 Principal Investigator George Hess, North Carolina State University 2.2 Investigation Participant-Sample Collection N/A 3. DATA SET ABSTRACT 3.1 Abstract of the Data Set This dataset provides a regional cross-reference for data collected by the EMAP Agricultural Lands Group. We worked with the National Agricultural Statistics Service (NASS) to collect our data. NASS guarantees confidentiality to all of their respondents. Therefore, we are not able to provide the exact location of sample sites. We negotiated with NASS to provide several regional identifiers for each sample point. These data can be cross-referenced with other data collect by the Agricultural Lands Group. Use SEGMENT at the key variable. 3.2 Keywords for the Data Set MAIA, annually harvested herbaceous crops (AHHC), regionalization, geographic cross reference, LRR, MLRA, HUC, ecoregion, agricultural land, agroecosystem 4. OBJECTIVES AND INTRODUCTION 4.1 Program Objective The Environmental Monitoring and Assessment Program (EMAP) was designed to periodically estimate the status and trends of the Nation's ecological resources on a regional basis. EMAP provides a strategy to identify and bound the extent, magnitude and location of environmental degradation and improvement on a regional scale. The EMAP Agricultural Lands Resource group was charged with carrying out the EMAP mission on lands classified as agricultural. ------- 4.2 Data Set Objective This dataset can be used to identify Agricultural Lands Group sampling locations within several regionalizations of the Mid Atlantic area. Because of data confidentiality regulations, we are unable to provide exact locations for our sampling points. This dataset will allow our sample locations to be aggregated by one of the following regions: Land Resource Region (LRR) Major Land Resource Area (MLRA) Omernik's Ecoregions USGS Hydrologic Region Codes (2 digit) USGS Hydrologic Subregion Code (2 digit) **NOTE: The USGS 4-digit code can be obtainted by concatenating Region and Subregion. Eg, Region 2, subregion 1 => 0201 is 4-digit HUC. 4.3 Data Set Background Discussion This dataset was created by overlaying the digitized center of NASS secondary sample units (segment) on digital maps of each regionalization. Region codes are cross-referenced to region names in separate files. 4.4 Summary of Data Set Parameters (filename) A. CROSS REFERENCE DATA SET (crossref.txt) STATE Two-digit FIPS code for state -- database KEY SEGCODE NASS Segment Identifier (SCRAMBLED) — database KEY MLRA Major Land Resource Area (coded) LRR Land Resource Region (coded) ECOREG mernik's Ecoregion (coded) HUCR USGS Hydrologic Region Code. HUCSR USGS Hydrologic Subregion Code. **NOTE: The USGS 4-digit code can be obtainted by concatenating Region and Subregion. Eg, Region 2, subregion 1 => 0201 is 4-digit HUC. B. LRR NAMES (lrrnames.txt) LRR Land Resource Region (coded) LRRNAME Name of Land Resource Region C. MLRA NAMES (mlranames.txt) MLRA Major Land Resource Area (coded) MLRANAME Name of MLRA D. ECOREGION NAMES (econames.txt) ECOREG Omernik's Ecoregion (coded) ECONAME Name of ecoregion ------- 5. DATA ACQUISITION AND PROCESSING METHODS 5.1 Data Acquisition 5.1.1 Sampling Objective N/A 5.1.2 Sample Collection Methods Summary N/A 5.1.3 Sampling Start Date N/A 5.1.4 Sampling End Date N/A 5.1.5 Platform N/A 5.1.6 Sampling Equipment N/A 5.1.7 Manufacturer of Sampling Equipment N/A. 5.1.8 Key Variables The SEGCODE is a unique identifier given to each NASS secondary sample unit. It may be used with other EMAP Agricultural Lands data keyed by SEGMENT to aggregate data into regions. SEGCODE is scrambled from the original NASS SEGMENT. 5.1.9 Sampling Method Calibration N/A 5.1.10 Sample Collection Quality Control N/A 5.1.11 Sample Collection Method Reference N/A 5.2 Data Preparation and Sample Processing Not applicable ------- 6. DATA MANIPULATIONS 6.1 Name of new or modified values N/A 6.2 Data Manipulation Description Not applicable. 6.3 Data Manipulation Examples N/A 7. DATA DESCRIPTION 7.1 Description of Parameters A. CROSS REFERENCE FILE (crossref. , txt) Parameter Data Parameter SAS Name Type Format Label STATE NUM 12 State (2 digit FIPS code) SEGCODE Num 15 Segment Identifier (arbitrary number) MLRA Char C4 Major Land Resource Area (coded) LRR Char CI Land Resource Region (coded) ECOREG Num 12 Omernik's Ecoregion (coded) HUCR Num 12 USGS Hydrologic Region HUCSR Num 12 USGS Hydrologic Subregion **NOTE: The USGS 4-digit code can be obtainted by concatenating Region and Subregion. Eg, Region 2, subregion 1 => 0201 is 4-digit HUC. STATE Two-digit FIPS code for state. SEGCODE NASS segment identifier. This is the database key. It matches data for the corresponding segment in the JES public release data and the fall survey data (e.g., main9495.txt). MLRA LRR ECOREG HUCR Major Land Resource Area. This is a finer regionalization of LRR's. Land Resource Region. LRRs were developed by the Natural Resources Conservation Service. Omernik's Ecoregion. USGS Hydrologic Region Code. HUCSR USGS Hydrologic Subregion Code. ------- B. LRR NAMES (lrrnames.txt) Parameter Data Parameter SAS Name Type Format Label LRR Char CI Land Resource Region LRRNAME Char C20 Name of LRR C. MLRA NAMES (mlranames.txt) Parameter Data Parameter SAS Name Type Format Label MLRA Char C4 Major Land Resource Area MLRANAME Char C20 Name of MLRA D. ECOREGION NAMES (econames.txt) Parameter SAS Name Data Type Format Parameter Label ECOREG ECONAME Char C20 Omernik's Ecoregion (coded) Name of Ecoregion 7.1.6 Precision to which values are reported 7.1.7 Minimum value in data set Not applicable 7.1.8 Maximum value in data set Not applicable 7.2 Data Record Example A. CROSS REFERENCE FILE (crossref.txt) STATE,SEGCODE,MLRA,LRR,ECOREG,HUCR,HUCSR 10,1,153C,T,63,2,6 10,2,153C,T,63,2,4 10,3,153C,T,63,2,4 10,4,153C,T,63,2,6 B. LRR NAMES (lrrnames.txt) LRR, LRRNAME L,"LAKE STATES FRUIT, TRUCK, AND DAIRY REGION" R,"NORTHEASTERN FORAGE AND FOREST REGION" C. MLRA NAMES (mlranames.txt) MLRA, MLRANAME 100,"Erie Fruit and Truck Area" 140,"Glaciated Allegany Plateau and Catskill Mountains" ------- D. ECOREGION NAMES (econames.txt) ECOREG, ECONAME 61,"Erie/Ontario Lake Hills and Plain" 60,"Northern Appalachian Plateau and Uplands" 8. GEOGRAPHIC AND SPATIAL INFORMATION 8.1 Minimum Longitude N/ A 8 . 2 Maximum Longitude N/ A 8 . 3 Minimum Latitude N/ A 8 . 4 Maximum Latitude N/ A 8.5 Name of area or region Mid Atlantic Region - DE, MD, NC, PA, VA, WV 9. QUALITY CONTROL AND QUALITY ASSURANCE 9.1 Data Quality Objectives Not Applicable 9.2 Data Quality Assurance Procedures 10. DATA ACCESS 10.1 Data Access Procedures Data can be downloaded from the EMAP web site. 10.2 Data Access Restrictions N/A 10.3 Data Access Contact Persons N/A ------- 10.4 Data Set Format ASCII text 10.5 Information Concerning Anonymous FTP N/A 10.6 Information Concerning WWW Data can be downloaded from the EMAP web site. 10.7 EMAP CD-ROM Containing the Data Set N/A 11. REFERENCES Cotter, J. and J. Nealon. 1987. Area Frame Design for Agricultural Surveys. USDA, NASS, Research and Applications Division, Area Frame Section, Washington, DC. 12. TABLE OF ACRONYMS AHHC - Annually harvested herbaceous crop EMAP - Environmental Monitoring and Assessment Program EPA - Environmental Protection Agency HUC - Hydrologic Unit Code JES - June Enumerative Survey LRR - Land Resource Region MAIA - MidAtlantic Integrated Assessment MLRA - Major Land Resource Area NASS - National Agricultural Statistics Service USDA - United States Department of Agriculture USGS - United States Geologic Survey 13. PERSONNEL INFORMATION George Hess North Carolina State University Forestry Department Raleigh NC 27695-8002 919.515.7437 (voice); 919.515.8149 (fax) grhess0ncsu.edu Dan Fiscus University of Maryland Center for Environmental Science Appalachian Laboratory 301 Braddock Road Frostburg, MD 21532 USA phone: (301) 689-7121; fax: (301) 689-7200 email: fiscus@al.iimces.edu ------- |