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Shifting climatic responses of tree rings and NDVI along environmental gradients
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SYSNO ASEP 0599396 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Shifting climatic responses of tree rings and NDVI along environmental gradients Author(s) Masek, J. (CZ)
Tumajer, J. (CZ)
Lange, J. (CZ)
Vejpustková, M. (CZ)
Kašpar, J. (CZ)
Šamonil, P. (CZ)
Chuman, T. (CZ)
Kolář, Tomáš (UEK-B) RID, ORCID, SAI
Rybníček, Michal (UEK-B) RID, ORCID, SAI
Jeníček, M. (CZ)
Vašíčková, I. (CZ)
Čada, V. (CZ)
Kaczka, R. (CZ)
Rydval, M. (CZ)
Svoboda, M. (CZ)
Nedělčev, O. (CZ)
Hais, M. (CZ)
Treml, V. (CZ)Number of authors 18 Article number 168275 Source Title Science of the Total Environment. - : Elsevier - ISSN 0048-9697
Roč. 908, JAN (2024)Number of pages 12 s. Language eng - English Country NL - Netherlands Keywords difference vegetation index ; light use efficiency ; abies l. karst. ; net ecosystem exchange ; norway spruce ; radial growth ; forest productivity ; carbon-dioxide ; drought ; impact ; Picea abies ; Climate-growth relationship ; Biomass compartments ; Tree-ring width ; Canopy vigor ; Remote sensing Subject RIV EH - Ecology, Behaviour OECD category Environmental sciences (social aspects to be 5.7) R&D Projects GA23-07583S GA ČR - Czech Science Foundation (CSF) Method of publishing Limited access Institutional support UEK-B - RVO:86652079 UT WOS 001112216000001 EID SCOPUS 85176223006 DOI https://doi.org/10.1016/j.scitotenv.2023.168275 Annotation Variations in the growth of aboveground biomass compartments such as tree stem and foliage significantly influence the carbon cycle of forest ecosystems. Yet the patterns of climate-driven responses of stem and foliage and their modulating factors remain poorly understood. In this study, we investigate the climatic response of Norway spruce (Picea abies) at 138 sites covering wide spatial and site fertility gradients in temperate forests in Central Europe. To characterize the annual growth rate of stem biomass and seasonal canopy vigor, we used treering chronologies and time-series of NDVI derived from Landsat imagery. We calculated correlations of tree-ring width and NDVI with mean growing season temperature and standardized precipitation evapotranspiration index (SPEI). We evaluated how these climate responses varied with aridity index, soil category, stand age, and topographical factors. The results show that the climate-growth responses of tree rings shift from positive tonegative for SPEI , from negative to positive for temperature from dry (warm) to wet (cold) areas. By contrast, NDVI revealed a negative response to temperature across the entire climatic gradient. The negative response of NDVI to temperature likely results from drought effects in warm areas and supporting effects of cloudy conditions on foliage greenness in wet areas. Contrary to NDVI, climate responses of tree rings differed according to stand age and were unaffected by local topographical features and soil conditions. Our findings demonstrate that the decoupling of stem and foliage climatic responses may result from their different climatic limitation along environmental gradients. These results imply that in temperate forest ecosystems, the canopy vigor may show different trends compared to stem growth under ongoing climate change. Workplace Global Change Research Institute Contact Nikola Šviková, svikova.n@czechglobe.cz, Tel.: 511 192 268 Year of Publishing 2025 Electronic address https://www.sciencedirect.com/science/article/pii/S0048969723069024?via%3Dihub
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