recent drought-induced vitality decline of black pine (pinus nigra arn.) in south-west hungary—is this drought-resistant species under threat by climate change?

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ID: 244984
2018
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Abstract
This paper analyses the recent recurring dieback and growth decline of Black pine (P. nigra Arn. var austriaca) in the Keszthely mountains of south-west Hungary, and their relations to water deficits due to droughts. These relations were studied in five stands with low soil water storage capacity for the period 1981–2016. The vitality was assessed using 60 tree-ring samples and changes in remotely sensed vegetation activity indices, i.e., the normalized difference vegetation index (NDVI) and the normalized difference infrared index (NDII). Water deficit was estimated by using meteorological drought indices such the standardized precipitation–evapotranspiration index (SPEI) and the forestry aridity index (FAI), as well as the relative extractable water (REW), calculated by the Brook90 hydrological model. Results revealed a strong dependency of annual tree ring width on the amount of water deficit as measured by all the above estimators, with the highest correlation shown by the summer REW. Droughts also showed a long-term superimposed effect on tree growth. NDII seemed to be more sensitive to drought conditions than NDVI. The robust dependency of tree growth on the summer water availability combined with the projected increasing aridity might lead to decreasing growth of Black pine in Hungary towards the end of the century. We thus argue that the suggestion by several papers that Black pine can be a possible substitute species in the Alpine and Mediterranean region in the future should be revisited.
Reference Key
mricz2018forestsrecent Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Norbert Móricz;Balázs Garamszegi;Ervin Rasztovits;András Bidló;Adrienn Horváth;Attila Jagicza;Gábor Illés;Zoltán Vekerdy;Zoltán Somogyi;Borbála Gálos
Journal tecnologia del agua
Year 2018
DOI
10.3390/f9070414
URL
http://www.mdpi.com/1999-4907/9/7/414
Keywords
drought ndvi p relative extractable waterplant ecology

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