You are here: Home
/ Publication Information
Title: Modeling grain-size dependent bias in estimating forest area: a regional application
Author: Zheng, Daolan; Heath, Linda S.; Ducey, Mark J.;
Source: Landscape Ecology. 23: 1119-1132.
Publication Series: Scientific Journal (JRNL)
Description: A better understanding of scaling-up effects on estimating important landscape characteristics (e.g. forest percentage) is critical for improving ecological applications over large areas. This study illustrated effects of changing grain sizes on regional forest estimates in Minnesota, Wisconsin, and Michigan of the USA using 30-m land-cover maps (1992 and 2001) produced by the National Land Cover Datasets. The maps were aggregated to two broad cover types (forest vs. non-forest) and scaled up to 1-km and 10-km resolutions. Empirical models were established from county-level observations using regression analysis to estimate scaling effects on area estimation. Forest percentages observed at 30-m and 1-km land-cover maps were highly correlated. This intrinsic relationship was tested spatially, temporally, and was shown to be invariant. Our models provide a practical way to calibrate forest percentages observed from coarse-resolution land-cover data.
Keywords: aggregation, confidence interval, land-cover map, pixel resolution, standard errors, 3 lake states of USA
- 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.
- This publication may be available in hard copy. Check the Northern Research Station web site to request a printed copy of this publication.
- Our on-line publications are scanned and captured using Adobe Acrobat. During the capture process some typographical errors may occur. Please contact Sharon Hobrla, email@example.com if you notice any errors which make this publication unusable.
XML: View XML
Zheng, Daolan; Heath, Linda S.; Ducey, Mark J. 2008. Modeling grain-size dependent bias in estimating forest area: a regional application. Landscape Ecology. 23: 1119-1132.
Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility