Conifer tree-ring density inter-annual variability - anatomical, physiological and environmental determinants

Tree ring analysis is one of the most useful methods in volume and biomass estimation especially of the conifer trees. Ring width and ring density are important parameters in dendrochronological research. The present research was carried out with the aim of estimating the radial and volumetric growth of the Japanese Cypress trees (Chamaecyperis obstusa and C. pisifera). Destructive method was used while collecting the wood samples from the selected trees. Ring width and ring density were measured using soft X-ray densitometry method using micro-densitometer. Computer programme, developed by the Forestry and Forest Products Research Institute, Japan was used to analyze the ring with and ring density data. The average ring width of the Chamaecyparis spp. was found to be about 3.4 mm at the age of 30 years. However, two types of growth pattern were observed in the trees. Average radial growth was about 5% every year during the first 20 years of the tree age, whereas, the average radial growth was negative during the age of 20–30 years. Average density of the tree rings were increased by about 11% in each height of the trees starting from the ground. Similarly, the stem density decreased by about 3.4% annually along the radial direction from the pith.DOI: http://dx.doi.org/10.3126/banko.v22i2.9197Banko Janakari: A Journal of Forestry Information for NepalVol. 22, No. 2, 2012 November Page: 36-42 Uploaded date: 12/1/2013

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A Preliminary Reconstruction of Rainfall in North-Central China since A.D. 1600 from Tree-Ring Density and Width

Quaternary Research ◽

10.1006/qres.1994.1056 ◽

1994 ◽

Vol 42 (1) ◽

pp. 88-99 ◽

Cited By ~ 91

Author(s):

Malcolm K. Hughes ◽

Wu Xiangding ◽

Shao Xuemei ◽

Gregg M. Garfin

Keyword(s):

Tree Ring ◽

Spectral Power ◽

Singular Spectrum Analysis ◽

Ring Width ◽

Central China ◽

North Central ◽

Ring Density ◽

Maximum Latewood Density ◽

Documentary Sources ◽

Latewood Density

AbstractMay-June (MJ) and April-July (AJ) precipitation at Huashan in north-central China has been reconstructed for the period A.D. 1600 to 1988 using tree-ring density and width fromPinus armandii. MJ precipitation (based on ring width and maximum latewood density) calibrated and cross-validated against local instrumental data more strongly than AJ precipitation (based only on ring width). A major drought was reconstructed for the mid- and late 1920s, confirmed by local documentary sources. This drought (culminating in 1929) was the most severe of the 389-yr period for MJ and second most severe for AJ, after an event ending in 1683. Neither reconstruction shows much spectral power at frequencies lower than 1 in 10 yr, but both show concentrations of power between 2.1 and 2.7 yr and 3.5 to 9 yr. There are significant correlations between the two reconstructions and a regional dryness/wetness index (DW) based on documentary sources, particularly at high frequencies. These correlations are focused in the 7.6- to 7.3-, 3.8- to 3.6-, and 2.5-yr periods. Using singular spectrum analysis, quasiperiodic behavior with a period close to 7.2 yr was identified in the MJ precipitation reconstruction and in the DW index based on documents.

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Author response for "Post‐disturbance conifer tree‐ring δ 15 N reflects openness of the nitrogen cycle across temperate coastal rainforests"

10.1111/1365-2745.13482/v2/response1 ◽

2020 ◽

Author(s):

J.M. Kranabetter ◽

K. McKeown ◽

B.J. Hawkins

Keyword(s):

Tree Ring ◽

Nitrogen Cycle ◽

Author Response ◽

Conifer Tree

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Northern European summer temperature variations over the Common Era from integrated tree-ring density records

Journal of Quaternary Science ◽

10.1002/jqs.2726 ◽

2014 ◽

Vol 29 (5) ◽

pp. 487-494 ◽

Cited By ~ 57

Author(s):

JAN ESPER ◽

ELISABETH DÜTHORN ◽

PAUL J. KRUSIC ◽

MAURI TIMONEN ◽

ULF BÜNTGEN

Keyword(s):

Tree Ring ◽

Summer Temperature ◽

Temperature Variations ◽

Ring Density ◽

Northern European ◽

The Common ◽

Common Era

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A lonely dot on the map: Exploring the climate signal in tree-ring density and stable isotopes of clanwilliam cedar, South Africa

Dendrochronologia ◽

10.1016/j.dendro.2021.125879 ◽

2021 ◽

Vol 69 ◽

pp. 125879

Author(s):

Tom De Mil ◽

Matthew Meko ◽

Soumaya Belmecheri ◽

Edmund February ◽

Matthew Therrell ◽

...

Keyword(s):

South Africa ◽

Stable Isotopes ◽

Tree Ring ◽

Climate Signal ◽

Ring Density

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Species mixture increases the effect of drought on tree ring density, but not on ring width, in Quercus petraea–Pinus sylvestris stands

Forest Ecology and Management ◽

10.1016/j.foreco.2015.02.019 ◽

2015 ◽

Vol 345 ◽

pp. 73-82 ◽

Cited By ~ 21

Author(s):

Maude Toïgo ◽

Patrick Vallet ◽

Valène Tuilleras ◽

François Lebourgeois ◽

Philippe Rozenberg ◽

...

Keyword(s):

Pinus Sylvestris ◽

Tree Ring ◽

Ring Width ◽

Quercus Petraea ◽

Ring Density ◽

Species Mixture

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Review for "Post‐disturbance conifer tree‐ring δ 15 N reflects openness of the nitrogen cycle across temperate coastal rainforests"

10.1111/1365-2745.13482/v1/review1 ◽

2020 ◽

Keyword(s):

Tree Ring ◽

Nitrogen Cycle ◽

Conifer Tree

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Experimental methods on tree-ring density of dendrochronology

2011 International Symposium on Water Resource and Environmental Protection ◽

10.1109/iswrep.2011.5893014 ◽

2011 ◽

Author(s):

Yinke Yang ◽

Qiang Huang ◽

Wenke Wang ◽

Yu Liu ◽

Yimin Wang ◽

...

Keyword(s):

Tree Ring ◽

Experimental Methods ◽

Ring Density

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Intra-annual variability in isotopic and total nitrogen in tree rings of old growth Sitka spruce from coastal British Columbia

Botany ◽

10.1139/cjb-2018-0112 ◽

2018 ◽

Vol 96 (12) ◽

pp. 851-857 ◽

Cited By ~ 4

Author(s):

T.E. Reimchen ◽

Estelle Arbellay

Keyword(s):

British Columbia ◽

Tree Ring ◽

Environmental Changes ◽

Sitka Spruce ◽

Picea Sitchensis ◽

Wilcoxon Test ◽

Old Growth ◽

Ecological Processes ◽

Annual Variability ◽

Coastal British Columbia

Tree-ring studies using increment cores have increasingly measured elemental (N) and isotopic (δ15N) nitrogen values to evaluate environmental changes in the nitrogen cycle. The paucity of nitrogen in wood has constrained tree-ring analyses to annual resolution. Based on 77 rings and 310 sub-rings, we provide evidence for substantial intra-annual variability in N and δ15N values in the heartwood of 11 geographically widely separated, old growth Sitka spruce [Picea sitchensis (Bong.) Carrière] trees from coastal British Columbia. The range of N and δ15N values within rings (intra-annual level) was on average equal to or up to seven-times the range among rings (inter-annual level). Most rings showed a seasonal reduction in N values from early to late growth and a corresponding increase to the early growth of the following season (P < 0.05 to 0.001, Mann–Whitney–Wilcoxon test). By contrast, intra-annual changes in δ15N values were highly variable among years and among trees, ranging from pronounced oscillations (4.0‰) to reasonable consistency. Our results allude to the potential importance of such intra-ring data for interpreting seasonal trends in nitrogen use and increasing understanding of ecological processes in the marine–terrestrial interface.

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