|
|
All Treesearch publications were written or produced by Forest Service personnel
and are in the public domain. |
|
US Forest Service
P.O. Box 96090
Washington, D.C.
20090-6090
(202) 205-8333 |
|
|
Publication Information
Title:
| Using estimates of natural variation to detect ecologically important change in forest spatial patterns: a case study, Cascade Range, eastern Washington. |
Author(s): |
Hessburg, Paul F.; Smith, Bradley G.; Salter, R. Brion. |
Date: |
1999 |
Source: |
Res. Pap. PNW-RP-514. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 65 p |
Station ID: |
RP-PNW-514 |
Description: |
Using hierarchical clustering techniques, we grouped subwatersheds on the eastern slope of the Cascade Range in Washington State into ecological subregions by similarity of area in potential vegetation and climate attributes. We then built spatially continuous historical and current vegetation maps for 48 randomly selected subwatersheds from interpretations of 1938-49 and 1985-93 aerial photos, respectively, and attributes cover types, structural classes, and potential vegetation types to individual patches by modeling procedures. We estimated a natural range of variation (NRV) in spatial patterns of patch types by subwatersheds and five forested ecological subregions. We illustrate how NRV information can be used to characterize the direction and magnitude of vegetation change occurring as a consequence of management. |
Keywords: |
Natural range of variation, forest health, space-for-time substitution, ecosystem restoration, ecological monitoring, landscape patterns, spatial pattern analysis |
|
View and Print this Publication (844 KB) |
Publication Notes: |
- 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 pubrequest@fs.f
ed.us to request a hard copy of this publication. (Please specify exactly
which publication you are requesting and your mailing address.)
|
|
Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility |
|
Citation
Hessburg, Paul F.; Smith, Bradley G.; Salter, R. Brion. 1999. Using estimates of natural variation to detect ecologically important change in forest spatial patterns: a case study, Cascade Range, eastern Washington.. Res. Pap. PNW-RP-514. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 65 p
|
|