A5046867386- Tree-ring climate responses
- Plant Water Relations and Carbon Dynamics
- Forest ecology and management
- Tree Root and Stability Studies
- Ecology and Conservation Studies
- Geology and Paleoclimatology Research
- Wood and Agarwood Research
- Ecology and Vegetation Dynamics Studies
- Fire effects on ecosystems
- Diverse Approaches in Healthcare and Education Studies
- Archaeology and ancient environmental studies
- Wood Treatment and Properties
- Climate variability and models
- Plant responses to elevated CO2
- Cryospheric studies and observations
- Forest Ecology and Biodiversity Studies
- Plant and animal studies
- Forest Insect Ecology and Management
- Plant Ecology and Soil Science
- Atmospheric chemistry and aerosols
- Architectural and Urban Studies
- Plant Physiology and Cultivation Studies
- Diverse Topics in Contemporary Research
- Rangeland Management and Livestock Ecology
- Aerogels and thermal insulation
Chungbuk National University
2016-2025
Cheongju University
2022
Dong-A University
2020
Universität Hamburg
2007-2016
Universität Greifswald
2013-2014
Korea National University of Education
2014
ABSTRACT Aim To identify temperatures at which cell division and differentiation are active in order to verify the existence of a common critical temperature determining growth conifers cold climates. Location Ten European Canadian sites different latitudes altitudes. Methods The periods cambial activity were assessed on weekly time‐scale histological sections cambium wood tissue collected over 2 5 years per site from 1998 2005 stems seven conifer species. All data compared with daily air...
We estimated the date of onset (Date(est)) cambial activity by pinning method in Scots pine (Pinus sylvestris L.) trees at Vanttauskoski (Site 1) and Laanila 2) near latitudinal limit northern Finland. In each year site, observations were made on a different set five trees. The dates compared with corresponding heat sums, calculated degree-days according to two models. Within years, Date(est) varied among up 15 days Site 1 13 2. Among mean 15.3 12.0 overall differed between sites 6 (June 5...
Increased drought frequency due to climate change is intensifying tree mortality, a critical issue in forest ecosystem management, especially vulnerable subalpine ecosystems. Korean fir (Abies koreana E.H. Wilson), an endemic species of South Korea that grows areas, threatened by change-induced drought. However, our understanding drought’s impact on particularly its seasonal and legacy effects, remains limited. To better understand drought-related mortality fir, we conducted annual surveys,...
Abstract Tree growth at northern treelines is generally temperature‐limited due to cold and short growing seasons. However, temperature‐induced drought stress was repeatedly reported for certain regions of the boreal forest in northwestern North America, provoked by a significant increase temperature possibly reinforced regime shift pacific decadal oscillation (PDO). The aim this study better understand physiological reactions white spruce, dominant species American forest, PDO shifts using...
Prof. Dr. Dieter Eckstein (1939 - 2021) significantly influenced the global development of dendrochronology and underlying science wood biology. Eckstein's research areas included dendroclimatology, xylogenesis, ecophysiology, quantitative anatomy. His personal collaborative work continues to improve our understanding both natural environment human cultural development. The techniques he developed championed resolved long-standing difficulties in application tree-ring understand processes...
The Republic of Korea is characterized by its north-to-south stretch and high mountain ranges along the eastern coast, resulting in terrain with higher elevation east lower west. These geographical features typically lead to regional climate differences, either based on latitude or from In present study, for effectiveness, entire Korean peninsula was divided into four regions features: Northeast Coast (NEC), Central Inland (MI), Southeast (SEC), South (SC). Two test sites were chosen each...
This exploratory study on Scots pine in subarctic Finland was aimed at identifying the climatic signal(s) ‘archived’ cellular anatomy and tree-ring variables, such as diameter wall thickness of tracheids, or early- latewood width, respectively. For this purpose, these variables were measured increment cores year by from 1961–2008 compared to each other. According low values some statistical descriptors ( e.g., expressed population signal mean sensitivity) cell-anatomical could, fact, not be...
The purpose of this study was to investigate the role strong winds and aging in death and/or decline growth Korean fir on Mt. Halla Korea. Bangeoreum (BA-S), Jindalrebat (JD-E), Youngsil (YS-W) southern, eastern, western slopes (ca. 1600 1700 m a.s.l.) were selected for study. site chronologies established using more than 10 living firs at each site. Additionally, date years seasons standing/fallen dead firs, 15/15, 14/15, 10/10 trees BA-S, JD-E, YS-W, respectively. After adjusting age with...
Tree growth at northern boreal treelines is generally limited by summer temperature, hence tree rings serve as natural archives of past climatic conditions. However, there increasing evidence that a changing climate well certain micro-site conditions can lead to weakening or loss the temperature signal in trees growing treeline environments. This phenomenon poses challenge all applications relying on stable temperature-growth relationships such reconstructions and dynamic vegetation models....
The present study conducted a stem analysis to trace growth information of Japanese larch (Larix kaempferi) and predict the future changes in volume. For this purpose, six L. kaempferi trees over 47 years old were cut at 1–2 m intervals from height 0.2 m, circular plates 5 cm thickness collected for analysis. indicated that approximately 1–8 are required grow up chest height. annual diameter increased rapidly until 15 gradually decreased after 20 years. volume 30-year-old Oegam-ri forests,...
Background and objective Particulate matter (PM) is the most dangerous form of air pollution, causes many diseases. Plants act as bio-filters to help reduce PM in atmosphere. also influences growth plants, so selecting suitable plant species for specific environmental conditions very important. The pollution tolerance index (APTI) was used determine level each pollution. purpose this study various order identify that can be grown polluted environments; achieved by evaluating APTI plants....
It was estimated that the Imdang-dong site of Gyungsan constructed in 2nd to 4th century based on excavated layers and artifacts. This study carried out verify result using dendrochronological analysis six wooden pillars at site. As a result, it proven 6 specimens were not cut same age because their tree-ring chronologies synchronized each other. And more, reconfirmed wiggle matching dating as confirming two them dated A.D. 94-135 224-289, respectively. coincided with above-mentioned age. In...
동일 수종이라도 생장지역과 영급에 따라 수형 또는 재질의 차이가 존재하고, 이러한 차이는 형성층 활동에 따른 목부세포의 양과 질이 다르기 때문에 생기게 된다. 본 연구는 소광리와 안면도에서 자라는 소나무를 대상으로 활동의 계절적 변화를 조사하여 소나무 목재의 재질 차이를 분석하기 위한 기초자료를 마련하기 위해 수행하였다. 활동 분석 결과, 소광리 5영급 임분은 목재세포 분열을 4월 중순에 시작하였으며, 안면도는 5영급과 9영급 모두에서 초에 시작하는 것으로 조사되었다. 9영급의 경우는 5월 중순에서 6월 중순으로 형성층에서 세포분열이 종료되는 시기는 9영급을 제외하고 안면도 모두 10월 중순부터 말로 내 세포분열 종료는 초였다. 형성층의 계절별 활동을 조사한 소광리의 분열기간이 안면도보다 짧게 나타났다. 반면, 소나무의 형성층으로부터 분열된 세포 수는 더 많은 Despite of the same species there is a difference in tree shape...
본 연구는 월악산에 식재된 잣나무와 화백나무의 형성층 활동을 모니터링 하여, 1) 수종에 따른 활동 기간을 확인하고, 2) 적산온도가 개시에 미치는 영향과 3) 생육기간 중 강수량이 연륜생장에 영향을 분석하기 위하여 수행되었다. 또한, 식재연도가 동일하지만 직경생장이 다른 두 그룹(DBH 평균 30 cm (CPL)와 15 cm(CPS))의 화백나무 생장패턴도 함께 조사하였다. 모니터링을 위해 미니코어를 활용하였으며, 시료채취는 2015년 4월부터 10월까지 2주 간격으로 실시되었다. 개시와 종료가 기대되는 4-5월과 9월 중순-10월은 일주일 실시하였다. 연륜분석 결과 잣나무의 연륜 수는 30개로 CPS와 CPL보다 7 (CPS) 또는 8 (CPL)개 적었다. 반면, 연륜폭은 4.12 mm로 CPL (3.97 mm)과 CPS (1.84 mm)보다 넓은 것으로 확인되었다. 상호비교에서는 CPL의 연륜폭이 CPS보다 2.13 mm 확인되었으나, 최근 3년간 연륜폭을 비교한...
This study was fulfilled to investigate the anatomical characteristics according provinces. In order compare between provinces we selected Goseong, Hongcheon, and Bonghwa as experimental sites. To use tree rings formed at same years dated all by cross-dating method used in dendrochronology cutting were successfully 2014, 2012, 2014 for woods from Hongchen, Bonghwa, respectively. Based on tracheid lengths widths measured considering juvenile wood (tree pith first 10 years), heartwood 1955...
To verify the possibility of using resistograph to estimate age big old living trees, we selected three Zelkova serrata and seven Pinus densiflora in Goesan. The mean diameters at breast height Z. P. were 102 (92-116) cm 80 (65-110) cm, respectively. heights measured from ground a ranged 1.2-4.3 m 0.6-1.1 for Densiflora, most appropriate needle speed determine tree-ring boundaries measuring ring width was 1500 r/min both tree species. Alternatively, suitable feed speeds 50 cm/min 150 cm/min,...