Skip to Main Content
Reliability assessment of selected indicators of tree healthAuthor(s): Pawel M. Lech
Source: In: Hansen, Mark; Burk, Tom, eds. Integrated tools for natural resources inventories in the 21st century. Gen. Tech. Rep. NC-212. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station. 377-384.
Publication Series: General Technical Report (GTR)
Station: North Central Research Station
PDF: View PDF (509.74 KB)
DescriptionThe measurements of electrical resistance of near-cambium tissues, selected biometric features of needles and shoots, and the annual radial increment as well as visual estimates of crown defoliation were performed on about 100 Norway spruce trees in three 60- to 70-year-old stands located in the Western Sudety Mountains. The defoliation, electrical resistance, and length of an individual shoot were classified as least reliable and of lowest diagnostic usability out of 17 parameters tested as estimates of tree health. In contrast, coefficients such as dry mass of one needle and dry mass of needles next to last set (per one shoot, per 1 cm of shoot) were evaluated as the most credible indicators of tree health. The normative scale of health, as expressed by the values of selected reliable coefficients, was then determined to allow an objective assessment of Norway spruce tree health.
- 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.
- 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.
CitationLech, Pawel M. 2000. Reliability assessment of selected indicators of tree health. In: Hansen, Mark; Burk, Tom, eds. Integrated tools for natural resources inventories in the 21st century. Gen. Tech. Rep. NC-212. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station. 377-384.
- Tree variables related to growth response and acclimation of advance regeneration of Norway spruce and other coniferous species after release
- Effects of air pollution and climatic factors on Norway spruce forests in the Orlicke hory Mts. (Czech Republic), 1979-2014
- Long-term monitoring of air pollution effects on selected forest ecosystems in the Bucegi-Piatra Craiului and Retezat Mountains, southern Carpathians (Romania)
XML: View XML