You are here: Home
/ Publication Information
Title: Estimating mapped-plot forest attributes with ratios of means
Author: Zarnoch, S.J.; Bechtold, W.A.;
Source: Canadian Journal of Forest Research. 30: 688-697.
Publication Series: Miscellaneous Publication
Description: The mapped-plot design utilized by the U.S. Department of Agriculture (USDA) Forest Inventory and Analysis and the National Forest Health Monitoring Programs is described. Data from 2458 forested mapped plots systematically spread across 25 States reveal that 35 percent straddle multiple conditions. The ratio-of-means estimator is developed as a method to obtain estimates of forest attributes from mapped plots, along with measures of variability useful for constructing confidence intervals. Basic inventory statistics from North and South Carolina were examined to see if these data satisfied the conditions necessary to qualify the ratio of means as the best linear unbiased estimator. It is shown that the ratio-of-means estimator is equivalent to the Horwitz-Thompson, the mean-of-ratios, and the weighted-mean-of-ratios estimators under certain situations.
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
- You may send email to firstname.lastname@example.org to request a hard copy of this publication. (Please specify exactly
which publication you are requesting and your mailing address.)
XML: View XML
Zarnoch, S.J.; Bechtold, W.A. 2000. Estimating mapped-plot forest attributes with ratios of means. Canadian Journal of Forest Research. 30: 688-697.
Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility