Experimental methods on tree-ring density of dendrochronology

2011 ◽  
Author(s):  
Yinke Yang ◽  
Qiang Huang ◽  
Wenke Wang ◽  
Yu Liu ◽  
Yimin Wang ◽  
...  
Keyword(s):  
Tree Ring ◽  
Experimental Methods ◽  
Ring Density

scholarly journals Growth and yield estimation of Chamaecyparis spp. through tree ring analysis

2013 ◽  
Vol 22 (2) ◽  
pp. 36-42 ◽  
Author(s):  
D. K. Kharal ◽  
T. Fujiwara
Keyword(s):  
Tree Ring ◽  
Radial Growth ◽  
Ring Width ◽  
Forest Products ◽  
Growth And Yield ◽  
Tree Age ◽  
Biomass Estimation ◽  
Tree Ring Analysis ◽  
Ring Density ◽  
Ring Analysis

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 

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

1994 ◽  
Vol 42 (1) ◽  
pp. 88-99 ◽  
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.

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

2014 ◽  
Vol 29 (5) ◽  
pp. 487-494 ◽  
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

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

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

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

2015 ◽  
Vol 345 ◽  
pp. 73-82 ◽  
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

July–August temperature at Edinburgh between 1721 and 1975 from tree-ring density and width data

Nature ◽  
1984 ◽  
Vol 308 (5957) ◽  
pp. 341-344 ◽  
Author(s):  
M. K. Hughes ◽  
F. H. Schweingruber ◽  
D. Cartwright ◽  
P. M. Kelly
Keyword(s):  
Tree Ring ◽  
Ring Density

scholarly journals Magnetic record associated with tree ring density: Possible climate proxy

2007 ◽  
Vol 8 (1) ◽  
Author(s):  
Gunther Kletetschka ◽  
Petr Pruner ◽  
Daniela Venhodova ◽  
Jaroslav Kadlec
Keyword(s):  
Tree Ring ◽  
Climate Proxy ◽  
Ring Density ◽  
Magnetic Record
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