Prediction of the probability of forest decline damage to Norway spruce using three simple site-independent diagnostic parameters

Mehlhorn, Horst and Francis, Brian and Wellburn, Alan (1988) Prediction of the probability of forest decline damage to Norway spruce using three simple site-independent diagnostic parameters. New Phytologist, 110 (4). pp. 525-534. ISSN 0028-646X

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Abstract

Survey data for Norway spruce (Picea abies I.) trees at 12 different forest sites across Europe have been analysed. Three variables (dry weight/fresh weight ratio differences between current and two-year-old needles, ethylene emissions and violaxanthin/antheraxanthin ratios) were found which together show a significant relationship to tree damage in areas affected by forest decline and which are independent of site effects (P < 0.001). Results are also presented that support the contention that atmospheric pollution, especially tropospheric ozone, is the major cause of this problem. After a four-year fumigation experiment, 12-year-old Norway spruce trees showed similar cellular changes as those found in the 30-to 40-year-old trees of the survey affected by forest decline. In the fumigation experiment, these changes were most pronounced in those plants exposed to a combination of treatments including ozone, sulphur dioxide and acid rain. The pollutant concentrations used in the four-year study were representative of those experienced by trees growing in affected areas.

Item Type:
Journal Article
Journal or Publication Title:
New Phytologist
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2700
Subjects:
ID Code:
50331
Deposited By:
Deposited On:
12 Oct 2011 10:53
Refereed?:
Yes
Published?:
Published
Last Modified:
01 Jan 2020 07:39