• Title/Summary/Keyword: Dendrochronological

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Tree-Ring Dating of Wood Elements for Jeongjagak of Seonreung, Seoul, Korea (선릉 정자각 목부재의 연륜연대 분석)

  • Son, Byung-Hwa;Han, Sang-Hyo;Park, Won-Kyu
    • Journal of the Korea Furniture Society
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    • v.23 no.2
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    • pp.222-228
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    • 2012
  • Seonreung is the tomb of Seong-jong (A.D. 1457~1494), the 9th king of Joseon Dynasty (1392-1910) and his second queen Jeonghyeon-wanghu (1462~1530). We obtained dendrochronological dates of Jeongjagak (ceremonial hall) of Seonreung. It was known first built in 1495 and reconstructed in October 1706, We obtained tree-ring dates of 20 wood elements (beams, pillars, truss posts, cant strips, roof boards and roof loaders). Their outermost rings were dated from 1630 to 1705. The dates of bark rings in four elements were A.D. 1705 with completed latewoods, indicating that these woods were cut some time between the autumn of 1705 and spring of 1706. The results confirmed the reconstruction date Jeongjagak of Seonreung in 1706, suggesting that there was not so long period for wood drying or storage, i.e., less than 6 months. The dates of outermost rings prior to 1705 in other elements indicated that some outer rings of these elements were removed during wood processing. Tree-ring dating proved that the present Jeongjagak of Seonreung had been well preserved for more than 300 years.

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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
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    • v.25 no.4
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    • pp.258-267
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    • 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.

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Tree-Ring Dating of Wood Elements of Jeongjagak and Bigak for Yungneung (융릉 정자각 및 비각 목부재의 연륜연대 분석)

  • Oh, Jung-Ae;Park, Won-Kyu
    • Journal of the Korea Furniture Society
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    • v.21 no.5
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    • pp.424-431
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    • 2010
  • Yungneung is the royal tomb of King Jangjo (the Crown Prince Sado, 1735~1762) and his wife, Hyegyeonggung-the Lady Hong (1735~1815). King Jangjo was the second son of the 21st King Yeongjo of the Joseon Dynasty. The tomb of King Jangjo was originally established at Yangju near Seoul in 1762 and moved to Whaseong near Suwon in 1789. We examined tree-ring (dendrochronological) dates of Jeongjagak, the ceremonial hall and Bigak, the tombstone house of Yungneung. We obtained tree-ring dates of 54 wood elements. The dates of bark rings were A.D. 1785, 1786, and 1787 with completed latewoods. These tree-ring dates were well matched with the historically recorded date of two buildings, A.D. 1789 when two or three year-storage after cutting logs was considered. The results indicated that the present buildings of Yungneung was built when the royal tomb of King Jangjo was moved from Yangju to Suwon. A historical record about the construction of Yungneung, 'Hyeonyungwon-eugye' confirmed the majority of woods was moved from 'Manrichang', an official storage office in Seoul through Han river and Yellow Sea to Suwon.

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Increasing Atmospheric Carbon Dioxide and Growth Trends of Korean Subalpine Conifers - Dendrochronological Analysis - (대기중(大氣中) 이산화탄소 증가와 한국산 아고산(亞高山) 침엽수류의 생장동향(生長動向) - 연륜연대학적(年輪年代學的) 분석(分析) -)

  • Park, Won Kyu
    • Journal of Korean Society of Forest Science
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    • v.82 no.1
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    • pp.17-25
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    • 1993
  • Tree-ring data of subalpine conifers growing in Korea were analyzed to evaluate the possibility of enhanced tree growths due to increased atmospheric carbon dioxide. A total of 64 trees of three species(Taxus cuspidata, Pinus koraiensis, Abies koreana) were sampled from three mountain ranges (Seolak, Sobaek, Chiri) at 1200~1750m(above sea level) and four chronologies were developed in spans of 209~412 years. No apparent growth increases were found in the graphs of chronologies. As comparing the growths of 1900-1949 and 1950-1989 period, only one chronology possessed higher mean growth in the post-1950 period. Growth increase found in the Pinus koraiensis chronology from Mt. Seolak was 8% but it could not be solely attributed to increased carbon dioxide concentration.

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The Relationship between Tree-Ring Growth in Pinus densiflora S. et Z. and the Corresponding Climatic Factors in Korea

  • LEE, Kwang Hee;JO, Sang Yoon;KIM, Soo Chul
    • Journal of the Korean Wood Science and Technology
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    • v.50 no.2
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    • pp.81-92
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    • 2022
  • To analyze the relationship between climatic factors (mean monthly temperature and total precipitation) and tree-ring growths of Pinus densiflora S. et Z. from National Parks (according to region) of the Korea, 20 trees were sampled from 13 National Parks. Only trees that were successfully cross-dated were used for dendrochronological analysis, and at least 11 trees were included. The tree-ring chronology of Mt. Bukhan (covering the shortest period of 1917 - 2016 [100 years]) was assessed, as well as that of Mt. Seorak (covering the longest period of 1687 - 2017 [331 years]). After cross-dating, each ring width series was double-standardized by first fitting a logarithmic curve and then a 50-year cubic spline. The relationships between climate and tree-ring growth were calculated with response function analysis. The results show a significant positive correlation between a given year's February-March temperature, May precipitation levels, and tree-ring growth. It indicates that a higher temperature in early spring and precipitation before cambium activity are important for radial growths of Pinus densiflora in the Korea.

Analysis of Species and Tree-Ring Dating of Traditional Furniture in Forest Museum of Korea National Arboretum (국립수목원 산림박물관 소장 전통 목가구의 연륜연대 및 수종 분석)

  • Lee, Hyun-Chae;Lee, Kwang-Hee;Hwang, Geun-Yeoun;Lee, Hae-Joo;Kim, Hee-Chae;Kim, Sung-Sik;Son, Byung-Hwa;Nam, Tea-Gwang;Kim, Yo-Jung;Park, Won-Kyu
    • Journal of the Korea Furniture Society
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    • v.23 no.1
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    • pp.84-94
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    • 2012
  • We present the species and the dendrochronological dates of Korean traditional furniture in Forest Museum Collection of Korea National Arboretum. Seven of thirteen were successfully dated. Chest with a flap door (84-55-1) was dated A. D. 1623. Others dated were cabinet (83-41-1: A. D. 1759), Chest with a turnover door (83-39-1; A. D. 1801), Cabinet with two horizontal section (88-39; A. D. 1843), Rice chest (82-27-3; A. D. 1849), Cabinet with two horizontal section (83-40-2; A. D. 1877), Chest with a flap door (84-50; A. D. 1918). Most of existing cabinets were made in 1800s. The 84-55-1 chest was one of the earliest pieces of furniture in the collections of Korea museums. The furniture is usually composed one species. The major species was Pinus densiflora. Bedside cabinet (83-41-1) and Cabinet with two horizontal section (88-39) were made from Korean pine (Pinus koraiensis). Becasue they were dated by the tree-ring chronology of Mt. Bekdu, the timber of their boards could be from the area of Mt. Bekdu.

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Tree-Ring Dating of Wood Elements Used for Tongmyungjeon Hall of Changkyung Palace - The Year of Transforming from Ondol Rooms to Wooden Floors- (창경궁 통명전 목부재의 연륜연대 측정 -방에서 마루로 변형된 시기규명을 중심으로-)

  • Park, Won-Kyu;Son, Byung-Wha;Han, Sang-Hyo
    • Journal of architectural history
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    • v.12 no.3
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    • pp.53-63
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    • 2003
  • Tree-ring chronologies can be used to date historical buildings by matching them with the chronologies of living trees or previously dated samples. Tree-ring dating gives a calendar year to each tree ring and produces the felling dates of logs or woods which had been used for buildings. In Korea, several chronologies of Japanese red pine(Pinus densiflora Sieb. et Zucc., 'sonamu' in Korean), a major species for the wooden building materials, have been developed and used for dating historical buildings. In this study, Tongmyungjeon Hall of Changkyung Palace in Seoul was dated by tree rings. The present Tongmyungjeon Hall was known to be reconstructed in A.D. 1834 after burned-out in A.D. 1790. We sampled total of 122 wood samples which were replaced during the repair process in 2002-2003. Felling dates of the samples were determined by the dendrochronological crossdating method. Crossdating method employs graphic comparison of the master patterns (ring-width chronologies of known dates) with those of the sample chronologies of unknown dates. Tree-ring dates confirmed that the reconstruction of 1834 utilized second-handed timbers as well as fresh-cut ones. The felling dates of wooden floor frames were mostly A.D. 1913, indicating the 'Ondol' floors were changed to the wooden floors around 1914 when the Japanese rulers brutally destroyed the royal Korean Palaces and transformed palace buildings to their offices or exhibition halls after occupying Korea in 1910. This study proved that tree-ring dating was a useful and accurate method to identify the critical dates for the history of Korean traditional buildings.

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Reconstruction of Vegetation During $9^{th}$ Century in Southern Korea: Anatomical and Dendrochronological Analysis of Waterlogged Woods Excavated at Cheonghea-jin Fort

  • Han, Sang-Hyo;Park, Won-Kyu;Kim, Yo-Jung;Jung, Suk-Bae
    • The Korean Journal of Quaternary Research
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    • v.17 no.2
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    • pp.117-122
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    • 2003
  • This study is conducted to examine the woods that were excavated at Jangdo Island. The Jangdo site is located in a small island some 180 meters away from the main island of Wando, Jeollanam-do in southern Korea. This site is known as Cheong-Hea Jin fort for the marine King Jang Bogo during the early 9$^{th}$ century. Total of 101 specimens were collected in three groups; small-size piles, log fences (Mok-check) and logs from a well. The species of the group of piles consisted of Quercus spp. (43%), Pinus densiflora (29%), Pinus koraiensis (5%), Alnus japonica (3%), Fraxinus spp. (3%), Styrax obassia (3%), Juglans spp. (2%), Zelkova serrata (2%), Platycarya strobilacea (2%), Celtis spp. (2%), Torreya nucifera (2%), Quercus myrsinaefolia (2%), and Cinnamomum spp. (2%). The species of Mok-check and logs from the well were identified as all Pinus densiflora. The species composition indicated that the climate around A. D. 9th-10th century in southern Korea was similar to the present.. The wooden fences were also examined for tree-ring analysis. The ages of woods were 50∼60 years. We made two site chronologies. The chronologies indicated that southeastern and southwestern fences were repaired frequently. The results could not give the absolute dates due to lack of reference chronologies in this period.

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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
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    • v.47 no.1
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    • pp.152-163
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    • 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.

Establishing Local Master Ring-Width Chronologies and Their Utilization for Estimating The Age of Big Old Trees (노거수 수령 추정을 위한 지역별 연륜연대기 구축 및 활용)

  • Oh, Jung-ae;Seo, Jeong-Wook;Kim, Byung-Ro
    • Journal of the Korean Wood Science and Technology
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    • v.45 no.1
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    • pp.85-95
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    • 2017
  • This study aimed at more precisely estimating the age of big old trees using dendrochronological method. Gesan-gun in Chungbuk (CBGS), Gurye-gun in Jeonnam (JNGR) and Uljin-gun in Gyeongbuk (GBUJ) were study areas and Zelkova serrata (ZS) and Pinus densiflora (PD) selected as protected trees therein were used as experimental tree species. The increment cores were extracted from 12, 8, and 6 ZSs and 10, 3, and 9 PDs in CBGS, JNGR, and GBUJ, respectively, using an increment borer (${\phi}5.2mm$). In order to clearly distinguish tree-ring boundary, the surface in the transverse section was cut for ZS using a sliding microtome and sanded for PD using a sand paper. Ring widths were measured in the resolution of 0.01 mm. Based on the measurement values, 203-year long (1813-2015) ZS local master tree-ring chronologies were successfully established and 175-year long (1841-2015) ZS local master tree-ring chronology for JNGR was also successfully established. In the case of PD, 154-, 175-, and 250-year long local master tree-ring chronologies for CBGS, JNGR, and GBUJ were successfully established, respectively. In the comparisons between local master tree-ring chronologies, they showed low t-values and Glks. According to the comparisons of the local master tree-ring chronologies with 50-year (1950~2000) average temperature and precipitation distribution maps, the annual variations of local master tree-ring chronologies seem to be determined by not temperature but precipitation. For such cross-dating therefore more local master tree-ring chronologies have to be established at the least based on the distribution map for precipitation.