Kenderes, K., Aszalós, R., Ruff, J., Barton, Zs. & Standovár, T. (2007): Effects of topography and tree stand characteristics on susceptibility of forests to natural disturbances (ice and wind) in the Börzsöny Mountains (Hungary). Comm. Ecol. 8(2):209-220

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Teljes hivatkozás: 
Kenderes, K., Aszalós, R., Ruff, J., Barton, Zs. & Standovár, T. (2007): Effects of topography and tree stand characteristics on susceptibility of forests to natural disturbances (ice and wind) in the Börzsöny Mountains (Hungary). Comm. Ecol. 8(2):209-220
Rövid hivatkozás: 
Kenderes és mtsai (2007)
Első szerző: 
Kenderes Kata
Év: 
2007
Összefoglalás: 

Effects of topography and tree stand characteristics on susceptibility of forests to natural disturbances (ice and wind) in the Börzsöny Mountains (Hungary)
K. Kenderes, R. Aszalós, J. Ruff, Zs. Barton and T. Standovár

We analysed the role of topography, tree stand characteristics and management on the susceptibility of forest stands to abiotic natural disturbance. In 1996, stands of Börzsöny Mts, Hungary were hit by a severe ice storm, then by strong winds three years later. Affected areas were mapped on aerial photos, and we built a GIS database containing variables describing topography and tree stand characteristics. The role of variables in predicting ice break and windfall was investigated by non-parametric statistical tests and by a series of C&RT (Classification and Regression Tree) analyses. Elevation, aspect and slope proved to have strong statistical relationships with the distribution of both ice break and windfall, with misclassification error (MER) of 18% and 15%, respectively, if studied without stand descriptors. Mixing ratio and age of beech were the most important stand descriptors to explain the distribution of ice break (MER=15%), whereas that of windfall was best described by the age and height of the two dominant tree species (MER=11%). The explanatory power could be increased if all variables (topographic + stand descriptors) were considered, though the increase in explanatory power was higher in the case of ice break (MER decreased from 15% to 11%) than for windfall (MER decreased from 11% to 10%). Since management related stand variables (beech mixture ratio, age, height, amount of recently felled stock, slenderness) and susceptibility to disturbance events seemed to be related, our results suggest that the sensitivity of tree stands could be decreased by increasing compositional and structural heterogeneity.

erdőszerkezet: faállomány
ökoszisztéma: bolygatás, zavarás, szennyezés
távérzékelés: légifotó
Megjegyzések: 

Effects of topography and tree stand characteristics on susceptibility of forests to natural disturbances (ice and wind) in the Börzsöny Mountains (Hungary)
K. Kenderes, R. Aszalós, J. Ruff, Zs. Barton and T. Standovár

Tartalom:
Introduction
Materials and methods
Study area
Ice break and windthrow in the Börzsöny Mountains
Data collection
Data analyses
Results
Extent of disturbance
Topographic characteristics of disturbed patches
Tree stand characteristics of disturbed patches
Factors determining the sensitivity of stands to ice and wind disturbance
Discussion
Effects of topography
Effects of stand characteristics
Conclusions
Ancknowledgements
References

Beech, C&RT, Fagus sylvatica, Ice break, Quercus petraea, Sessile oak, Windthrow

Címszavazva - GE

Kiadó: 
Akadémiai Kiadó
Folyóirat: 
Community Ecology
Lelőhely: 
ER Archívum (2007/P-032)
Típus: 
tudományos publikáció, konferencia szakcikk (teljes)
Katalógusba vette: 
Gulyás Györgyi
Katalógusbavétel időpontja: 
2011-04-11