Title: Effects of air pollution and climatic factors on Norway spruce forests in the Orlicke hory Mts. (Czech Republic), 1979-2014
Author: Vacek, Stanislav; Hunova, Iva; Vacek, Zdenek; Hejcmanova, Pavla; Podrazsky, Vilem; Kral, Jan; Putalova, Tereza; Moser, W. Keith;
Source: European Journal of Forest Research. 134: 1127-1142.
Publication Series: Scientific Journal (JRNL)
The area of the Orlicke hory Mts. has been characterised by decline and disturbances of Norway spruce (Picea abies/L./Karst.) stands since the 1980s. Currently, only three permanent research plots have been preserved from the original sixteen established plots in this region. In the present study, the health status, as indicated by defoliation, mortality, and stem radial growth, was studied in the peaty and climax spruce ecosystems in the upper elevations of the mountains from 1979 to 2014. This health status was correlated with ambient air pollution (SO2) as well as climate factors (temperature and precipitation). The health status of individual trees on the plots was determined by evaluation of the foliage status, and tree vitality was evaluated by measuring stem radial growth increment. Stress factor analysis showed that high air pollutant concentrations predisposed Norway spruce to stress from climatic events (drought, temperature changes), leading to forest decline. The most serious damage can be attributed to the combination of chemical and climatic stress. Stands with lowered vitality were attacked by secondary biotic pests (particularly bark beetle), resulting in rapid tree mortality. The damage process is marked not only by higher mortality, but also by chlorosis and necrosis of the needles. The stabilised trend in health status of the spruce stands was registered since approximately 1990s. In terms of climatic factors, the weather in June had the most visible influence on radial increment. Low temperatures and high precipitation were the limiting factors for radial growth in studied mountain area.
Keywords: stress factors, sulphur dioxide, nitrogen air pollution, ozone, climate, Central Europe
- 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.
XML: View XML
Vacek, Stanislav; Hunova, Iva; Vacek, Zdenek; Hejcmanova, Pavla; Podrazsky, Vilem; Kral, Jan; Putalova, Tereza; Moser, W. Keith. 2015. Effects of air pollution and climatic factors on Norway spruce forests in the Orlicke hory Mts. (Czech Republic), 1979-2014. European Journal of Forest Research. 134: 1127-1142.
Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility