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RMRS-RP-7: Double sampling for stratification: a forest inventory application in the Interior West


Chojnacky, David C. 1998. Double sampling for stratification: a forest inventory application in the Interior West. Res. Pap. RMRS-RP-7. Ogden, UT: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. 15 p.

This paper documents the use of double sampling for Forest Inventory and Analysis (Forest Service, U.S. Department of Agriculture) inventories in the Interior West. Results show 18 equations describe the entire inventory summarization process for estimating population totals and means, and respective variances. Most equations are for standard use of double sampling, but equations are also given for a ratio method and a special method for data defined by county and land ownership. Inventory data from 800,000 ha of forest land in southern Idaho are used to illustrate application of several equations.

Keywords: inventory design, mapped design, ratio estimation, southern Idaho, two-phase sampling, variance approximation


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http://www.fs.fed.us/rm/pubs/rmrs_rp007.pdf

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Title: RMRS-RP-7: Double sampling for stratification: a forest inventory application in the Interior West
Electronic Publish Date: September 19, 2008
Last Update:
September 19, 2008

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