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assessment and Analysis of Rockfall-Caused Tree Injuries in a Turkish Fir Stand:A Case Study from Kastamonu-Turkey

Journal of Mountain Science 2012年第2期9卷 137-146页

作者： Abdurrahim AYDIN Nesibe KSE nal AKKEMK Hüseyin YURTSEVEN Düzceüniversity Faculty of ForestryKonuralp Campus Faculty of Forestry Department of Forest BotanyIstanbul University Faculty of Forestry Department of Surveying and PhotogrammetryIstanbul University

Rockfalls can cause serious damage to people,property,facilities and transportation ***,rockfalls are major hazards in mountain areas with negative impacts on individual trees and forested *** conducted a study of rockfall events on 117 mapped(91% of total trees in the stand with>1.3 m in height and>5 cm diameter at breast height)Turkish fir trees(Abies bornmuelleriana Mattf.)in a stand within the Kayaarkasi-Topular Village,Inebolu district, Kastamonu province of *** study site of 0.35 Ha is located on the transition zone of frequently passing rockfall fragments(～40 cm in diameter) generally causing healable *** of trees and injuries were recorded and analysed as to injury number,height and *** correlation analysis were used to investigate the relationships between:a)diameter at breast height and number of injuries per tree,b)diameter at breast height and total injury size,c)the number of injuries and total injury size and d)the number of injuries per tree and distance from the source of the rockfall *** indicate that the average height of injury,average number of injuries and average injury area to be 81.3 cm(STDEV:49.8),7.46(STDEV:4.4)and 628.6 cm2 (STDEV:678.2),*** total 84% of all injuries were recorded within 160°sector at the upslope side of trees and callus tissue that had closed wounds was observed in 79.1% of all injuries. Furthermore 14.5% of injured trees had callus tissue in the process of closing wounds while 6.4% of injuries had not formed any callus *** most common injury types were bark and wood injuries. Bivariate correlation analysis indicated strong relationships between diameter at breast height and the number of injuries(rs=0.524),injury number and total injury area(rs=0.653)and distance from rockfall area and injury numbers relations(rs=-0.518).A weaker relationship was found between diameter at breast height and total injury area(rs=0.363).These results

关键词： Tree injuries Rockfall past event assessment Turkish fir Turkey

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