We evaluated the radial increment in the young stage (up to 10 years old) of dominant sprouts in chestnut (Castanea sativa) stands coppiced in two different epochs (before 1980 and between 1990 and 2000) but before the arrival of the Asian chestnut gallwasp (Dryocosmus kuriphilus). The study sites were located in in Ticino (Switzerland), Veneto, Piedmont, and Tuscany (Italy). The analyzed data highlighted a significant higher increment rate in shoots from post-1990 coppicing. Possible explanatory factors are the management techniques, the increasing temperatures, the atmospheric CO2 enrichment and the increased soil nitrification due to the anthropogenicinduced N-depositions. Conversely, in sites located at the edges of the climatic optimum for the chestnut tree, frequent summer droughts observed from 2003 on seem to have caused a decline in the woody increments of the species.
Coppices are not the same anymore: evolution of the radial increment in young chestnut coppices
enrico marcolin
Writing – Original Draft Preparation
;mario pividoriWriting – Review & Editing
;
2024
Abstract
We evaluated the radial increment in the young stage (up to 10 years old) of dominant sprouts in chestnut (Castanea sativa) stands coppiced in two different epochs (before 1980 and between 1990 and 2000) but before the arrival of the Asian chestnut gallwasp (Dryocosmus kuriphilus). The study sites were located in in Ticino (Switzerland), Veneto, Piedmont, and Tuscany (Italy). The analyzed data highlighted a significant higher increment rate in shoots from post-1990 coppicing. Possible explanatory factors are the management techniques, the increasing temperatures, the atmospheric CO2 enrichment and the increased soil nitrification due to the anthropogenicinduced N-depositions. Conversely, in sites located at the edges of the climatic optimum for the chestnut tree, frequent summer droughts observed from 2003 on seem to have caused a decline in the woody increments of the species.Pubblicazioni consigliate
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