Results 31 to 40 of about 2,948,588 (299)
Frontiers in Plant Science, 2017 The age of living massive olive trees is often assumed to be between hundreds and even thousands of years. These estimations are usually based on the girth of the trunk and an extrapolation based on a theoretical annual growth rate.
Yael Ehrlich +3 more
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Oecologia, 2015 In Amazonian non-flooded forests with a moderate dry season, many trees do not form anatomically definite annual rings. Alternative indicators of annual rings, such as the oxygen (δ18Owc) and carbon stable isotope ratios of wood cellulose (δ13Cwc), have ...
S. Ohashi +7 more
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BioResourcesThe accumulation and allocation of heavy metals—arsenic (As), strontium (Sr), palladium (Pd), and vanadium (V)—were measured in Pinus nigra wood over more than three centuries.
I. Koc
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Вестник археологии, антропологии и этнографии, 2017 The article analyzes tree-ring chronologies of contemporary pines growing on different hypsometric marks in relation to the modern level of the Andreevskoe lakes, on the low-ridges of terrace-like formations, floodplain lowlands and riams.
Arefyev S.P., Zakh V.A.
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Directional variance analysis of annual rings
Journal of Physics: Conference Series, 2010 The wood quality measurement methods are of increasing importance in the wood industry. The goal is to produce more high quality products with higher marketing value than is produced today. One of the key factors for increasing the market value is to provide better measurements for increased information to support the decisions made later in the ...
P Kumpulainen, K Marjanen
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Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2004 The work was focused on problematics of annual-rings width according to position within the tree stem. Annual-ring widths, ratio of late wood and early wood by spruce with compression wood were investigated.
Vladimír Gryc, Jiří Holan
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Frontiers in Plant Science, 2021 Knowledge about past climates, especially at a seasonal time scale, is important as it allows informed decisions to be made to mitigate future climate change.
Eyob Gebrehiwot Gebregeorgis +5 more
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Comparative analysis of annual rings of perennial forbs in the Loess Plateau, China
, 2016 Although recent studies have demonstrated that annual growth rings are present among perennial forbs species at high northern latitudes, little is known about whether there are demarcated growth rings of perennial forbs in the Loess Plateau of China ...
Songlin Shi +7 more
semanticscholar +1 more source
Laser Photoacoustic Detection of CO2 in Old Disc Tree-Rings
Sensors, 2010 A homemade CO2–laser photoacoustic spectrometer has been used for monitoring CO2 in gas samples extracted under vacuum from the wood of old spruce disc tree-rings for a ~60 year series.
Boris Ageev +2 more
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, 2014 Some trees from tropical areas lack visually detectable and consistent annual growth rings. As such, we have measured the radial variation of cellulose oxygen isotopes in trees that grow in seasonally dry forests of Northern Laos to explore the ...
Chenxi Xu +3 more
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