Tree-Ring Width And Its Interrelation With Environmental Parameters: Case Study In Central Hungary

Abstract

Tree ring width is influenced by several internal and external factors, among which climate became one of the most dominant due to the altering conditions and patterns of precipitation and temperature. The study aims to analyse the interrelationship between tree ring-width and the dominant environmental parameters in a landscape exposed to water scarcity in the past decades due to climate change and human interventions. Scots pine (Pinus sylvestris), black locust (Robinia pseudoacacia) and white poplar (Populus alba) plantations were sampled to reveal their exposure to climatic forcing and water scarcity (different water availability). Correlation and similarity analysis were carried out to compare the calculated ring-width indices to climatic parameters and aridity indices. Tree ring sensitivity was assessed to reveal the impact of water scarcity on yearly ring-growth. Spatial overlapping of significance levels and mean sensitivity with the hydrological changes of the past decades were evaluated to reveal presumable spatial differences of the investigated samples. In the study area (South Danube-Tisza Interfluve) droughts and the deep groundwater table had both impacts on tree growth. The spectacular decrease of ringwidth corresponds to the drought years determined by the investigated aridity indices. The relationship between the climate parameters and the ring-widths varies spatially with the changing site conditions. The highest level of correlation coefficients was experienced in areas with the lowest level of water availability. Ring-width sensitivity assessments showed an increasing tendency of sensitivity when comparing the consecutive decades, except for samples with favorable water availability.

Effect of Variable Growth Conditions on Selected Anatomical Properties of Hungarian Turkey Oak Wood

“…Annual tree growth-ring studies are fundamental because they can predict the performance of trees and encode the prevailed ecological information [5,11,15,16]. The findings of this study on ring width agree with the literature [4].…”

Climatic signal in a radial growth of Canadian and Maximovich poplars in south-western Poland

“…In dendrochronology, the value of the Pearson correlation coefficient (0.328) has been considered to be the critical value of this parameter (Holmes, 1983;Holmes, 1994). Individual sequences, N W , W S i W K , were also described by means of medium sensitivity (x w, mm), which defines the degree of differentiation between successive values in the time data series (Fritts, 1976;Ladányi and Blanka, 2015).…”

Magyarországi erdeifenyő állományok komplex dendroklimatológiai elemzése az elmúlt 100 év klímaváltozásának tükrében

“…Utóbbi kiemelt érdeme, hogy már nem kizárólag az évgyűrűkben található klíma-növekedés kapcsolat elemzésével foglalkozott, hanem hosszú időátfogású klímarekonstrukciókat is készített (Kern et al 2004(Kern et al , 2009a(Kern et al , 2009b(Kern et al , 2013, ezzel meghonosítva a dendroklimatológia egyik legdinamikusabban fejlődő ágát hazánkban. Az éghajlati változékonysághoz szorosan kapcsolódó munkáikban Ladányi Zsuzsanna és Blanka Viktória a termőhelyükön a fák növekedésére ható tényezők súlyát (Ladányi-Blanka 2015), Nagy László pedig az erdeifenyők alkalmazkodóképességét és válaszreakcióit vizsgálták (Nagy 2009). Blanka és munkatársai foglalkoztak továbbá az évgyűrűkutatás egy itthon szintén kevésé ismert területével, a 12 dendrogeomorfológiával is, melynek segítségével a Maros kanyarulatképződésének tér-és időbeli változását vizsgálták (Blanka et al 2006).…”