• Title/Summary/Keyword: tree ring

Search Result 248, Processing Time 0.041 seconds

Global Warming Trend : Further Evidence from Multivariate Long Memory Models of Temperature and Tree Ring Series

  • Chung, Sang-Kuck
    • Environmental and Resource Economics Review
    • /
    • v.9 no.3
    • /
    • pp.515-544
    • /
    • 2000
  • This paper shows that various fractionally integrated univariate and multivariate are remarkably successful in representing annual temperature series and also very long series of tree ring widths, which are often used as a proxy for temperature. The analysis also suggests that human recorded temperature series are not inconsistent with being generated by a stationary, long memory process. From the empirical results, we should be noted that the statistically significant positive trend coefficients may well be due to small sample sizes. These results cast some doubt on the basic assumption that global warming is definitely occurring.

  • PDF

Relationships Between Vessel-lumen-area Time Series of Quercus spp. at Mt. Songni and Corresponding Climatic Factors (속리산 참나무류 도관내강면적연대기와 기후인자와의 관계분석)

  • Jeong, Hyun-Min;Kim, Yo-Jung;Seo, Jeong-Wook
    • Journal of the Korean Wood Science and Technology
    • /
    • v.45 no.1
    • /
    • pp.72-84
    • /
    • 2017
  • This study aimed to suggest a method to establish vessel-lumen-area chronologies in domestic Quercus spp. from Mt. Songni and to verify their potential as a climate proxy. In order to establish vessel-lumen-area chronologies, three options were applied to filter vessels. Options 1 and 2 use vessels having lumina larger than or equal to $6,000{\mu}m^2$ (MVA-60) and $7,500{\mu}m^2$ (MVA-75), respectively, to establish the chronologies by their mean values in each year, and option 3 uses the largest one (MAX) in each tree ring. MVA-60 and MVA-75 had mostly significant relationships with the winter precipitation between November in the previous year and January in the current year, however, MAX had only significant relationship with November precipitation in the previous year. Based on these results, it was verified that the potential of vessel lumina in domestic Quercus spp. could be a climate proxy in dendroclimatology.

Species Identification and Tree-Ring Analysis of Wood Elements in Daesungjeon of Jipyeong Hyanggyo, Yangpyeong, Korea (양평 지평향교 대성전 목부재의 수종 및 연륜연대 분석)

  • Son, Byeong-Hwa;Kim, Jung-Hun;Nam, Tae-Kwang;Lee, Kwang-Hee;Park, Won-Kyu
    • Journal of the Korean Wood Science and Technology
    • /
    • v.39 no.3
    • /
    • pp.213-220
    • /
    • 2011
  • The objective of this study is to conduct the species identification and tree-ring dating for the wood elements of Daesungjeon (main hall) in Jipyeong Hyanggyo, a Confucian shrine in Jije-myeon, Yangpyeong-gun, Gyeonggi-do, Korea. Major wood species for Daesung Hall was Pinus densiflora (88%) belonging to hard pine. The other species was P. koraiensis belonging to soft pine. One large beam and one collar beam with bark were dated to A.D. 1718 and 1720, suggesting either a large-scale repair or moving in 1720s as the record of an historical document 'Hakgyodeongrok'.

The Dendrochronological Characteristic of Pinus densiflora in Gyeongbuk Region (경북 지역 소나무의 연륜생태학적 특성에 관한 연구)

  • Lee Sang-Tae;Yoon Seok-Lak;Park Eun-Hee;Kim Jong-Kab;Chung Young-Gwan
    • Korean Journal of Agricultural and Forest Meteorology
    • /
    • v.7 no.4
    • /
    • pp.289-295
    • /
    • 2005
  • This paper reports on the dendrochronological investigation of tree ring growth of Pinus densiflora in the Gyeongbuk region. Tree ring growth was analysed using basic statistical value and correlation analysis to evaluate the relative contribution of climatic factors. Ta extract age-related trends and nonclimatic signals, each measurement series was standardized using a negative exponential growth function. In the Gyeongbuk region, tree ring growth was positively correlated with the current year in February, March and April, January, February, and March precipitation showed a positive correlation with the current growth year. This suggests that climatic factors (monthly average temperature, precipitation) limit breaking of dormancy and promotion of growth of Pinus densiflora in the Gyeongbuk region.

Tree-Ring Dating of Wooden Furniture in The National Museum of Korea (국립중앙박물관 수장고 소장 목가구의 수종 및 연륜연대분석)

  • Kim, Yo-Jung;Lee, Kwang-Hee;Oh, Jung-Ae;Kim, Soo-Chul
    • Journal of the Korea Furniture Society
    • /
    • v.25 no.4
    • /
    • pp.258-267
    • /
    • 2014
  • We present the dendrochronological dates of Korean wooden furnitures in National Museum of Korea. Six of fourteen were successfully dated. Rice Chest (구 2225) was dated A.D. 1805 +. Others dated were Rice Chest (신수 9479; A.D. 1819), Rice Chest (신수 9475; A.D. $1826{\pm}10$), Ganghwa-Chest with a flap door (구 2341; A.D. $1842{\pm}10$), Ganghwa-Chest with a flap door (구 3124; A.D. $1859{\pm}10$), Chest with a flap door (신수 15731; A.D. $1865{\pm}10$). Most of existing cabinets were made in 1800s. Rice Chest (신수 9479) was the earliest piece of furniture in the collections of National Museum. The furniture is usually composed one species. The major species was Pinus densiflora.

  • PDF

Analysis of Species and Tree-ring Dating of Coffin Woods excavated at Hopyungri, Namyangju, Korea (남양주 호평유적 출토 관재의 수종식별 및 연륜연대 분석)

  • Park, Won-Kyu;Choi, Jong-Kook;Kim, Yo-Jung
    • Journal of Conservation Science
    • /
    • v.18 s.18
    • /
    • pp.105-110
    • /
    • 2006
  • The purpose of this study is to identify the species and to date the coffin woods that were excavated at a tomb (husband and wife) in Hopyungri, Namyngju, Korea. Twenty-three wood specimens of the two coffins were analyzed for identifying their species. All coffin woods were Pinus spp. (hard pine). 'Sabs'(ritual utensils that prevent demon) were made from Tilia spy. Tree-ring dating proved that the husband's coffin was made from the wood which was cut around 1620 and the wife's one at a little earlier period.

  • PDF

Tree-Ring Growth Characteristics of Zelkova serrata Makino after Replanting on the Reclaimed Land from the sea in Gwangyang Bay (광양만 임해 매립지 느티나무 이식 이후의 연륜생장 특성)

  • Kim Do-Gyun
    • Journal of the Korean Institute of Landscape Architecture
    • /
    • v.33 no.6 s.113
    • /
    • pp.40-50
    • /
    • 2006
  • This study was carried out to examine the tree-ring growth characteristics of Zelkova serrata Makino after replanting, for the built-up planting founds for stability of landscaped trees in the reclaimed land from the sea. the factors, many affecting the growths of Zelkova serrata Makino, were the replanting stress and drought. The growth reduction due to replanting and drought occurred in the replanting year and the following year. The mean sensitivity(year-to-year variation) and the coefficient of variation(tree-to-tree variation in a certain year) in tree rings of Zelkova serrate Makino, were higher in the poor soil sites than in the favourable soil ones. And the poor soil sites were the filled ground of improve soil and the covered ground of improve soil and the top ground of big mounding than mounding ground sites, especially soil hardness, alkali soil, high $Na^+\;and\;K^+,\;low\;Ca^{++}\;and\;Mg^{++}$ and T-C were the most crucial. We suggest technique development of the built-up planting ground for stability in the reclaimed land from the sea. The built-up planting grounds in reclaimed land from the sea, should be considered for the use of fair soil with the physical and chemical soil properties, -high level foundation of planting ground, and the prevention of disturbed soil-.

Dendrochronological Dating for the Gwanghanru Pavilion, Namwon, Korea (남원 광한루 목부재의 연륜연대 분석)

  • Park, Won-kyu;Kim, Yo-jung;Han, Sang-hyo
    • Korean Journal of Heritage: History & Science
    • /
    • v.47 no.1
    • /
    • pp.152-163
    • /
    • 2014
  • In this study, Gwanghanru Pavilion (Namwon-si, Cheonbuk Province) was dated by tree rings of pines (Pinus densiflora Sieb. et Zucc., 'sonamu' in Korean). The present Gwanghanru Pavilion is composed of three parts: main, wing and entrance parts. The main part is known to have been built in 1626 and the entrance hall in 1879, but the date of construction of the wing part is still unknown. We dated a total of 55 wood samples which were replaced during the repair process in 2001~2002. Tree-ring dates indicated that both main and wing parts were built in 1626. Tree rings also revealed that the entrance hall was constructed in 1880~1881, and both main and wing parts were heavily repaired together while appending the entrance hall. In conclusion, dendrochronology, i.e., tree-ring dating, was a useful and accurate method to identify the critical dates-such as the dates of original construction, reconstruction, repairs and extensions-for the history of Korean traditional buildings.

The Effects of Climate Factors on the Tree Ring Growth (기후인자가 임목의 연륜생장에 미치는 영향)

  • Yoon, Mihae;Lee, Woo-Kyun;Kim, Moonil
    • Journal of Climate Change Research
    • /
    • v.4 no.3
    • /
    • pp.255-267
    • /
    • 2013
  • This study aims to reveal the relationship between major climatic factors and radial growth in Siu-ri, NamYangJuSi, Kyeonggido. To identify tree growth responses to climatic variation, we used correlation analysis after standardization and cross-dating of tree ring growth. We use the climatic data(monthly mean, minimum, maximum temperature and precipitation) from September of previous year to August of current year. In terms of relationship between mean, minimum, maximum temperature and tree ring growth, negative correlations were observed in September and October of the previous year. In case of Quercus mongolica, negative relationship were appeared in December of the previous year, January and February of present year. When it comes monthly maximum temperature, August and September of present year was negatively correlated with radial growth in the case of Pinus densiflora. We can conclude that reduced soil moisture due to high temperatures causes a water stress that stunts tree growth. In contrast, there are positive correlations in March of present year. These results suggest that high temperatures in March appear to prolong the growing season. Growth was positively correlated with precipitation from October to December of previous year and from May to September of present year. The results suggest that the smooth water supply from precipitation can promote the tree growth.