Double sampling for stratification: a forest inventory application in the Interior West

David C. Chojnacky

doi:10.2737/RMRS-RP-7

Treesearch

Double sampling for stratification: a forest inventory application in the Interior West

Informally Refereed

Authors:

David C. Chojnacky

Year:

1998

Type:

Research Paper

Station:

Rocky Mountain Research Station

DOI:

https://doi.org/10.2737/RMRS-RP-7

Source:

Res. Pap. RMRS-RP-7. Ogden, UT: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. 15 p.

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Abstract

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

Citation

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.