• 한국문화재보존과학회:학술대회논문집
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• 2005.11a
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• pp.290-295
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• 2005

본 실험은 경주 월성해자와 일정교지에서 발굴된 고목재를 시료로 사용하였다. 월성 해자 5점, 일정교지 2점으로 총 7점을 대상으로 수종분석과 연륜연대 해석을 실시하였다. 수종분석은 광학현미경을 사용하여 식별을 하였으며, 연륜연대 해석은 연륜측정후 연륜분석 컴퓨터프로그램과 그래프 일치도를 육안으로 비교하여 실시하였다. 7개의 시료 전부 밤나무였다. 밤나무는 현재 평남과 함남 이남에 분포하는 수종으로 특히 따뜻한 남부지방에 살기 적합한 수종이다. 각 시료간의 상대연도를 확인한 결과는 월성해자 목재의 수령은 $31{\sim}37$년 일정교지는 45년으로 확인 되었다. 월성해자의 각 시료들은 동시대이나 벌채기간은 6년 차이가 났다. 일정교지의 시료에서는 일치성을 확인하지 못했다.

• Journal of agriculture & life science
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• v.44 no.5
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• pp.35-43
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• 2010

To examine the relationship between climate and tree-ring growth of Pinus densiflora S. et Z. growing in the ridges of the Baekdudaegan, it was analyzed the sample cores of 48 trees were collected from 21 sites. After the pattern of tree rings of all Pinus densiflora were cross-dating each other, it was recognized the growth of Pinus densiflora was affected by climate largely when tree-ring chronologies were standardized to remove the age-related growth. As a cluster analysis was conducted to examine the similarity of chronologies, three clusters were classified, the tree-ring growths of Pinus densiflora was not by regional or elevational gradients but by the growth tree-ring width amplitude as micro-site growth environments. Correlation coefficients between the chronologies of three clusters and monthly climate (temperature and precipitation) factors were obtained. As a result, tree-ring growth of Pinus densiflora was more affected by temperature than precipitation and the trees of high-growth cluster possessed less climatic influences.

• The Korean Journal of Quaternary Research
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• v.14 no.1
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• pp.65-71
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• 2000

The growth of Daphniphyllum macropodum at Mt. Naejang National Park(Naejang temple area) was investigated in connection with the climatic factors by the use of tree-ring analysis. A pair of cores was extracted from each of 18 trees in the D. macropodum community area near Younjabong for the analysis. The period of mater chronology based upon D. macropodum covers from 1915 to 1998. The growth rates of D. macropodum were very poor in the years 1920, 1932, 1934, 1937, 1942, 1946, 1964, 1969 and 1985, respectively. Response function was employed to understand the relationship between the growth of D. macropodum and climatic factors. The response function of the growth rates of D. macropodum indicated significant negative correlation with the precipitation of August and September. Poor growth of D. macropodum during the August and September nay be due to the frequent rain periods during the summer The heavy rain during the summer seems to decrease the solar radiation, which eventually caused the decrease of photosynthesis capacity. In conclusion, we hypothesize that the decrease of the photosynthesis rates during the rainy summer seasons may cause the slower growth of D. macropodum.

• Korean Journal of Agricultural and Forest Meteorology
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• v.17 no.2
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• pp.93-101
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• 2015

This study was conducted to analyze the relationship between tree-ring growth of Quercus acutissima and climatic variables by dendroclimatological method. Annual tree-ring growth data of Quercus acutissima collected by the $5^{th}$ National Forest Inventory (NFI5) were organized to analyze the spatial distribution of the species growth pattern. To explain the relationship between tree-ring growth of Quercus acutissima and climatic variables, monthly temperature and precipitation data from 1950 to 2010 were compared with tree-ring growth data for each county. When tree-ring growth data were analyzed through cluster analysis based on similarity of climatic conditions, four clusters were identified. In addition, index chronology of Quercus acutissima for each cluster was produced through cross-dating and standardization procedures. The adequacy of index chronologies was tested using basic statistics such as mean sensitivity, auto correlation, signal to noise ratio, and expressed population signal of annual tree-ring growth. Response function analysis was conducted to reveal the relationship between tree-ring growth and climatic variables for each cluster. The results of this study are expected to provide valuable information necessary for estimating local growth characteristics of Quercus acutissima and for predicting changes in tree growth patterns caused by climate change.

• 한국지구과학회:학술대회논문집
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• 2010.04a
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• pp.101-102
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• 2010

규화목은 목본식물의 2차목부가 화석화된 것으로 화석화 과정에서 여러 종류의 무기물이 세포를 치환하거나 세포의 내강 또는 간극에 침투하여 고화된 것이다. 이 과정에서 목재의 해부학적 구조가 잘 보존되는 경우가 많고 이를 통해 목재의 수종을 비교적 정확히 동정할 수 있을 뿐만 아니라 과거 환경에 대한 정보를 얻을 수 있다. 목재는 유관속 형성층에 의해 매년 새롭게 형성되어 축적되며 형성된 조직은 성장하는 당해 기후변화를 반영하게 된다. 따라서 화석목재를 통해 과거 기후조건을 복원할 수 있는 정보를 얻을 수 있는 경우도 많다). 본 연구는 포항 분지의 신제3기 마이오세 장기층군에서 채집한 규화목의 조직과 나이테 분석을 통해 고환경을 해석한 것이다. 장기층군에서 채집한 15개의 규화목 표본 중 나이테가 잘 나타나는 5개 표본에서 나이테를 분석하고 그중 조직이 잘 보존된 1개의 표본에 대해 목재해부학적 연구를 수행하였다. 나무가 성장함에 따라 나타나는 나이테의 폭은 환경적 요인 등으로 매년 일정하지 않다. 이런 인접연륜간의 연륜변동성을 알아보기 위해 연륜연대학(Dendrochronology)에서 널리 사용되는 평균민감도 측정 방법을 사용하였다. 평균민감도는 연륜변동이 어느 정도있느냐를 알아보는 것으로 인접한 연륜들 사이의 차이를 측정하여 인접연륜간 연륜변동성을 나타낸다. 평균민감도 값이 크면 연륜폭 변동이 크다는 것을 의미하며 나무가 자라는 당시 환경인자의 변화량이 컸다고 해석할 수 있다. 조직이 잘 보존된 1개의 표본은 목재해부학적 특징상 느릅나무과(Ulmaceae) 느릅나무속(Ulmus)으로 동정되었다. 또한 5개 표본의 나이테를 분석한 결과 평균민감도는 0.34~0.41 범위를 나타내며 전체 평균은 0.37의 값을 갖는 것으로 나타났다. 이것은 규화목 생성 당시 환경이 온대기후를 지시하며, 물 공급이 매년 계절적인 제한을 받았거나 다양한 변화가 있어 계절적으로 강수량 변화가 있었음을 지시한다.

• Journal of the Korean Wood Science and Technology
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• v.49 no.1
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• pp.67-81
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• 2021

This study aimed to conduct tree-ring dating and analysis of the materials used for the wooden coffins excavated from the ruins of Sipjeong-dong, Incheon. The tree species for the 10 wooden coffin materials was identified as pine. For accurate tree-ring measurement, the cross section was polished using sandpaper. The annual ring width was measured with an accuracy of 0.01 mm. Since the five materials were consistent with each other in dendrochronology, a representative annual ring chronology of 83 years was prepared. The prepared representative annual ring chronology was compared with the standard annual ring chronology, and the outermost ring of the wooden coffin was confirmed to correspond to the year 1575, suggesting that the wooden coffin was produced in the late 16th century. In addition, microscopic observation and FT-IR analysis revealed that the fibers attached to the surface of the wooden coffin were fibroin (Silk), and infrared spectroscopy (FT-IR) and Py-GC/MS analysis showed that the paint left on the surface of the wooden coffin was lacquer.

• Journal of Conservation Science
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• v.18 s.18
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• pp.105-110
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• 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.

• 한국문화재보존과학회:학술대회논문집
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• 2005.03a
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• pp.98-100
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• 2005

• Journal of the Korean Wood Science and Technology
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• v.35 no.6
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• pp.57-64
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• 2007

Tree-ring dating can be used to date scientifically prehistoric timbers, historical buildings or woodcrafts. It gives a calendar year to each tree ring and produces the felling dates of logs or wood panels. In this study, we applied tree-ring dating to two medicine cabinets, known to be made in Kyônggi Province. Two cabinets were dated A.D. 1884 and 1874 to the last rings, respectively. Even with closed ages, two cabinets show different styles and structures. Tree-ring patterns indicated that the origins of woods for both cabinets would be near Sorak mountains and Kangneung area in Kangwon province.

• Journal of Korean Society of Forest Science
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• v.105 no.1
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• pp.122-131
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• 2016

This study was conducted to analyze the effect of climatic variables on tree-ring growth of Larix leptolepis distributed in Korea by dendroclimatological method. For this, annual tree-ring growth data of Larix leptolepis collected by the $5^{th}$ National Forest Inventory were first organized to analyze yearly growth patterns of the species. To explain the relationship between tree-ring growth of Larix leptolepis and climatic variables, monthly temperature and precipitation data from 1950 to 2010 were compared with tree-ring growth data for each county. When tree-ring growth data were analyzed through cluster analysis based on similarity of climatic conditions, six clusters were identified. In addition, index chronology of Larix leptolepis for each cluster was produced through cross-dating and standardization procedures. The adequacy of index chronologies was tested using basic statistics such as mean sensitivity, auto correlation, signal to noise ratio, and expressed population signal of annual tree-ring growth. Response function analysis was finally conducted to reveal the relationship between tree-ring growth and climatic variables for each cluster. The results of this study are expected to provide valuable information necessary for estimating local growth characteristics of Larix leptolepis and for predicting changes in tree growth patterns caused by climate change.