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Access and Use of FIA Data Through FIA Spatial Data Services

Access and Use of FIA Data Through FIA Spatial Data Services. Elizabeth LaPoint. Why am I Here?. Facilitate access to FIA data without violating the law - revealing plot location or ownership information Connect customers’ GIS layers or imagery with FIA plots Summarize data over a given area

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Access and Use of FIA Data Through FIA Spatial Data Services

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  1. Access and Use of FIA Data Through FIA Spatial Data Services Elizabeth LaPoint

  2. Why am I Here? • Facilitate access to FIA data without violating the law - revealing plot location or ownership information • Connect customers’ GIS layers or imagery with FIA plots • Summarize data over a given area • Assist by providing information or knowledge

  3. The Law • FY 2000 Appropriations Bill modified the Food Security Act of 1985 (7 U.S.C. 2276(d)) • Data must be in an aggregate form so that the landowner’s identity cannot be determined • Violation of the law can result in fines up to $10,000 and/or 1 year in jail

  4. Who Makes Requests? • Academia - #1 Customer • Federal Agencies –USGS, EPA, BLM • Forest Service – NFS, Researchers • State Agencies • FIA – between Units; within Units • NGO – The Nature Conservancy

  5. Data Requests by Organization

  6. Request Process • Initial contact • Review & explain the law and security policy • Protecting the landowner’s privacy & plot location is #1 concern • Refine the idea – What question do they really want answered? • Focus the request • No charge for requests

  7. Regional Data Requests • If a data request falls entirely into a single FIA Unit then the request may be handled by the FIA Unit itself

  8. Request Process • Limitations of the data – GPS, gaps in coverage, differences between states • Does FIA data answer their question? • Can we modify the request so it does? • Present plan to Program Manager(s)

  9. Request Process • Approve – I handle request • Approve – FIA Unit involved does request • Deny – I work with requestor to figure out alternative that will work • Do the analysis • Final security review • Product is shipped

  10. Examples • Wood Basket – Circular retrieval. 150 miles around a given location. Return growth within area. • Accuracy assessment of imagery classification. Return classes with plot information.

  11. How Busy Have I Been? • In FY2004 70 new requests made so far • 24 active requests currently • 11 active national requests • Estimated wait time - about 4-8 weeks • 67% completed within 4 weeks in FY2003

  12. Fuzzing & Swapping • FIADB will have coordinates again .….BUT…..

  13. First the Fuzzing • Coordinates will be fuzzed

  14. Then Swapping • Up to 20% of privately owned plots “swapped” • Similar plots have their data swapped • Plot A’s data assigned to Plot B’s location

  15. What Does This Mean? • Customers may choose to download the fuzzed & swapped data to use • Refine their ideas using fuzzed & swapped data and then call me

  16. Fuzzed/Swapped Data Available

  17. Fuzzing and Swapping Future • Available now on FIADB web site http://ncrs2.fs.fed.us/4801/fiadb/fiadb17_ dump/fiadb17_dump.htm

  18. Elizabeth LaPoint FIA National Spatial Data Services Northeastern Research Station Newtown Square, PA 610-557-4049 elapoint@fs.fed.us www.fs.fed.us/ne/fia/spatial/index_ss.html

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