Title: Growth of western larch after thinning from above and below to several density levels: 10-year results.
Author: Seidel, K.W.
Source: Res. Note PNW-RN-366. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 20 p
Publication Series: Research Note (RN)
Description: The 10-year growth of a 55-year-old, even-aged western larch (Larix occidentalis Nutt.) stand after it was thinned from above and below to a wide range of stocking levels was measured in eastern Oregon. Basal area and volume growth increased as stand density increased for both thinning methods. Despite heavy infestations of the larch casebearer during the last 4 years, diameter growth was greater in the second 5-year period than the first, but height growth was reduced considerably because of top dieback.
Thinning from above reduced net volume growth because of mortality caused by windthrow and exposure, although surviving trees responded well to increased growing space during the second period. Thinning from below is recommended in unmanaged larch stands.
Keywords: Growth response, thinnings, stand volume, increment, growing stock management, growing stock, increment/yield, stand density, western larch, Larix occidentalis
- 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
Seidel, K.W. 1980. Growth of western larch after thinning from above and below to several density levels: 10-year results. Res. Note PNW-RN-366. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 20 p
Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility