• Journal of Ecology and Environment
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• 제29권6호
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• pp.581-584
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• 2006

냉온대림의 주요 구성종으로 산지에도 분포하며 정원수로도 식재되고 있는 느티나무와 자작나무 그리고 미국에서 도입되어 조경수로 많이 활용되는 백합나무에서 내건성과 관련한 식물의 조직 수분 특성을 비교하였다. 한계원형질분리가 일어나는 점에서의 삼투포텐셜은 느티나무에서 -2.54 MPa로 가장 낮은 값을 나타내었으며, 백합나무에서 -2.03 MPa로 가장 높은 값을 나타내었다. 잎의 수분포텐셜 변화에 대한 압력 포텐셜의 변화에서도 느티나무가 가장 논은 압력포텐셜을 유지하였다. 세포의 자유수 함량 저하에 대한 압력포텐셜 변화 곡선은 전체적으로는 비슷한 패턴의 곡선을 나타내었지만 세포의 자유수 감소 시, 느티나무와 자작나무는 백합나무보다 높은 압력포텐셜을 유지하였다. 따라서 이들 세 종 중에서는 백합나무가 내건성이 가장 낮았으며, 느티나무는 다른 두 종에 비해 내건성이 가장 강하였다.

• 한국산림과학회지
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• 제108권2호
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• pp.269-275
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• 2019

본 연구에서는 뿌리 수술과 수목 이식 현장에서 단근 부위에 처리하는 뿌리연고에 대한 상처 반응 및 세근 발달을 3종의 수종에서 비교하였다. 2014년 5월부터 2016년 11월까지 경상북도 상주시에 식재된 소나무, 벚나무, 느티나무 성목에서 직경 2~4 cm에 해당하는 뿌리를 절단하고 상처 부위를 바셀린과 유기질 비료로 연고 처리하여 6개월이 경과한 후, 시료를 채취하여 세근 생장량을 조사하였다. 단근 후 세근 발달은 전반적으로 느티나무와 벚나무에서 우수하였지만 소나무에서는 저조하였다. 세근 생장량은 느티나무에서 단근과 유기질 비료 처리구에서 높게 나타났다. 벚나무에서는 처리별로 뚜렷한 효과가 없었다. 이상의 결과는 단근과 상처 처리에 대한 세근 발달이 수종별로 상이하므로 단근 후 수종별로 처리방법의 세분화가 필요함을 시사한다.

• 헤리티지:역사와 과학
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• 제44권1호
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• pp.122-137
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• 2011

본 연구는 경상북도 영덕군 남정면 도천리 75번지에 위치하고 있는 영덕 도천리 도천숲(2009년 12월 30일 천연기념물 제154호 지정)을 연구대상지로 설정하여 도천숲 전체($19,064m^2$)의 정밀한 생태계 현황 및 수목 생육 특성을 파악하고자 실시되었다. 수림지의 토양환경은 대부분의 항목에서 양호한 결과를 보였으나 일부 항목에서 개선이 필요한 것으로 판단되었다. 수림지 내 분포하고 있는 수목은 총 503개체이며 수림지의 주요 구성수종은 느티나무, 팽나무, 말채나무, 고욤나무, 시무나무 쉬나무의 6종이었다. 특히 느티나무, 팽나무, 말채나무는 70cm 이상의 대경목에서 10cm 미만의 어린 수목까지 고르게 분포하고 있어 초기 수림지의 조성 당시부터 현재까지 수림지를 구성하는 대표적인 수종인 것으로 판단되었다. 출현한 야생동물은 야생조류 18과 20종 95개체, 포유류 1종, 파충류 1종, 양서류 1종이었으며 천연기념물 제327호인 원앙 1개체가 사체로 관찰되었다. 수림지 내 대표 수종의 연간 직경생장량 분석 결과 연간 평균 직경생장량은 2.3mm이었다. 교목층을 형성하는 것으로 판단되는 수목의 평균 수령은 약 101년으로 추정되었으며 수림지 내 최고령 수목의 수령은 약 300~400년인 것으로 추정되었다. 본 연구는 영덕 도천리 도천숲(천연기념물 제514호)의 지속가능한 관리계획 수립 및 자연재해 등으로 인한 수림지의 훼손시 복원을 위한 기초자료로 활용될 수 있을 것으로 기대된다.

• 농촌계획
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• 제17권3호
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• pp.67-80
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• 2011

This study was conducted to understand the distribution characteristics of old tree (protected tree) and propose the effective management plan for old tree to make hold a sustained function as natural and cultural resources in rural area. We surveyed 96 old trees at 69 farm villages in Yaesan-gun, South Chungcheong Province. The species of tree was investigated with Zelkova serrata, Ginkgo biloba, Quercus acutissima, Pinus densiflora, Celtis sinensis, and Juniperus cbinensis order. Most of them located at the inside (43.6%) and the entrance (35.1%) of a village, and at mountain slope (31.9%) and alluvial plain (25.3%) in terms of distribution topography. The existing place of pollution source was investigated with 61%, and the pollution sources were blocks, construction materials, cement packings, farm machines and living garbage. The place where the rates of bare ground were more than 50% for the root region of a protection tree was 63%. The tree surgical operation was investigated in 37.5% of protection trees, and 12.5% of protection trees were investigated with a tree surgical operation being immediately. The average score for health condition of old tree at study sites was 18.6 points. A monitoring class was divided by public monitor 59.3%, main monitor 38.5%, and dead tree 2.2% on the basis of that information. Hereafter, we will conduct to promote the management guideline and develope culture contents through additional investigation.

• 한국조경학회지
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• 제40권5호
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• pp.160-168
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• 2012

본 연구는 직접수확법을 통해 도시 낙엽성 조경수의 탄소저장 및 흡수를 용이하게 추정하는 회귀모델을 제시하고 도시녹지의 탄소저감 계량화에 필요한 기반정보를 구축하였다. 연구대상 수종은 도시조경수로 흔히 식재되는 단풍나무, 느티나무, 왕벚나무 및 은행나무이었다. 수종별로 유목에서 성목에 이르는 일정 간격의 흉고직경 크기를 고려한 수목을 구입하여, 근굴취를 포함하는 직접수확법에 의해 개체당 부위별 및 전체 생체량을 산정하고 탄소저장량을 산출하였다. 또한, 흉고 부위의 수간 원판을 채취하여 직경생장을 분석하고 탄소흡수량을 산정하였다. 흉고직경을 독립변수로 4개 수종별 생장에 따른 단목의 탄소저장 및 흡수를 계량화하는 활용 용이한 회귀모델을 유도하였다. 이들 회귀식의 $r^2$는 0.94~0.99로서 적합도가 상당히 높았다. 단목의 탄소저장량과 탄소흡수량은 모두 직경생장과 더불어 증가하였고, 직경급간 그 차이도 대개 직경이 커질수록 증가하는 경향이었다. 동일 직경에서는 느티나무가 가장 높은 경향이었고, 다음으로 왕벚나무, 은행나무 등의 순이었다. 유도한 회귀식을 적용하면, 흉고직경 15cm인 느티나무 단목은 약 54kg의 탄소를 저장하고 있으며, 연간 7kg의 탄소를 흡수하는 것으로 나타났다. 본 연구는 도시 조경수목의 직접 벌목과 근굴취의 난이성에 기인하여 생체량 확장계수, 지하부/지상부 비율, 직경생장 등 산림수목의 계수를 대용한 기존 연구의 한계성을 극복할 새로운 초석을 마련하였다. 연구결과는 정부나 지자체의 도시녹지 사업과 관련하여 조경수목의 탄소저감을 평가하는 공공기반기술로서 유용하게 활용될 수 있다.

• 한국산림과학회지
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• 제95권5호
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• pp.614-620
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• 2006

To study the chlorophyll contents and photosynthetic characteristics of 4 tree species of deciduous hardwoods; Betula platyphylla var. japonica, Zelkova serrata, Acer mono and Prunus sargentii were treated in 3 stages of shading; the full sun treatment, the medium shade treatment with 30% of transmittance comparing to full sun, the intense shade treatment with 8% of transmittance and their changes in chlorophyll contents and photosynthetic characteristics were examined and analyzed. Most hardwoods showed differences in the total chlorophyll contents in the order of May < September < July, however, that in Prunus sargentii increased progressively along with the lapse of time. Concerning the degree of shading, total chlorophyll contents increased in proportion to the level of shading. Betula platyphylla var. japonica and Prunus sargentii showed more than 2-3 times difference between the full sun treatment and the intense shade treatment. The changes in photosynthetic characteristics, the range of the light saturation point of the trees was $1,000{\sim}1,100{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$ in May, before the shading was applied, and the intensity was shown in the order of Betula platyphylla var. japonica > Zelkova serrata > Acer mono > Prunus sargentii. The photosynthetic rate was $6.4{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}{\sim}27.1{\mu}mol{\cdot}CO_2{\cdot}m^{-2}{\cdot}s^{-1}$ in the order of Betula platyphylla var. japonica > Prunus sargentii > Acer mono > Zelkova serrata that there were differences between species. Concerning the changes in light saturation point in each growth period after shading treatment, the light saturation point in the full sun treatment was found in the range of $560{\sim}1,100{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$ and the level of intensity was shown in the order of May > July > September. The light saturation point decreased as the level of shading intensified and the level of changes in light compensation point in the full sun treatment for Betula platyphylla var. japonica and Prunus sargentii was shown in the range of $2.9{\sim}27.1{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$ in the order of May > July > September, however, for Zelkova serrata and Acer mono was shown in the range of $3.9{\sim}11.7{\mu}mol{\cdot}CO_2{\cdot}m^{-2}{\cdot}s^{-1}$ in the order of July > May > September that there were differences between species.

• 한국환경과학회지
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• 제29권2호
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• pp.123-132
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• 2020

Seasonal changes in the CO₂ fixation rate and water-use efficiency in the leaves of six evergreen and two deciduous broad-leaved tree species on Jeju Island, Korea, were measured using a portable photosynthesis analyzer, to identify which species are most efficient in taking up CO₂ from the air. The CO₂ fixation rate was high in the deciduous species in spring and summer and decreased in fall, whereas it was high in the evergreen species in summer and fall and decreased in winter. The rate remained high in the deciduous tree Prunus yedoensis from spring to fall (> 7.1 μmol CO₂/m₂/s) and in two evergreen trees, Castanopsis cuspidata var. sieboldii and Cinnamomum camphora, in summer and fall (7.0 9.9 μmol CO₂/㎡/s). Therefore, these tree species fix atmospheric CO₂ effectively. The water-use efficiency was higher in evergreen species than in deciduous species regardless of the season. Exceptionally, it was high in the deciduous species Zelkova serrata in spring and summer (> 100 μmol CO₂/mol H₂O), suggesting that Z. serrata is a useful tree for dry conditions due to its tolerance of water stress. The regressions of the CO₂ fixation rate versus the evaporation rate and stomatal conductance were linear and non-linear, respectively. This suggests that the stomatal activity of leaves plays an important part in CO₂ fixation of plants. In conclusion, C. cuspidata var. sieboldii, C. camphora, and P. yedoensis should be planted along roads or in urban spaces for the greening of cities and mitigation of CO₂ concentrations in the air.

• 한국환경복원기술학회지
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• 제20권6호
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• pp.151-160
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• 2017

This study was conducted by using a Nikon Coolpix S800c camera equipped with a NIR filter to measure the NDVI(Normalized Difference Vegetation Index). It was used for the measurement of the three trees of Pinus densiflora, Taxus cuspidata, Zelkova serrata and Acer palmatum in Kangwon National University. The NDVI value of the surface of the building was compared and analyzed. The average value of NDVI in August and September was high in all species. The NDVI distribution of Taxus cuspidata was higher than the other trees. The NDVI distribution of Pinus densiflora and Taxus cuspidata did not show any significant seasonal differences, but The NDVI distribution of Zelkova serrata and Acer palmatum were relatively low in May and June, which are leafless periods. Previous studies related to NDVI value were generally analyzed using satellite imagery. However, it was scarce related to study the NDVI value of each tree or study the changing process of NDVI by time series. Previous studies have used NDVI values on the ground but this study used NDVI values in the ground section. Future studies will be necessary to measure the NDVI value at different times for various species and also to make efforts to generalize the measurement method. In addition, research related to various fields such as the relationship between NDVI and carbon stocks and the relationship with LAI needs to be conducted.

• 한국환경과학회지
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• 제25권10호
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• pp.1369-1379
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• 2016

This research assessed the disparity in anion generation according to the vertical structure of a Zelkova Serrata tree for the purpose of creating a pleasant and green city environment. Measurements for the study were conducted between July and August of 2014 in Chung-ju in the central region of the Republic of Korea. The average anion generation of vertical structure trees during active photosynthesis periods was: L Section ($839.0ea/cm^3$) > M Section ($664.6ea/cm^3$) > U Section ($472.0ea/cm^3$). According to DMRT analysis, significant difference was found in the average between the L, or M Locations and the U Locations. During dormant photosynthesis periods, records showed that the anion production at the M Location ($1,212.5ea/cm^3$) > L Location ($1,050.4ea/cm^3$) > H Location ($844.1ea/cm^3$), According to DMRT analysis, the difference within each location was significant for ${\alpha}=0.05$. In a comprehensive analysis of the weather factors in each vertical structure, anion generation during active photosynthesis periods showed a positive correlation with solar radiation and a negative correlation with wind speed. Dormant photosynthesis periods showed negative correlations with both solar radiation and temperature, and positive correlations with relative humidity and wind speed. Predictions from a multicenter retrospective study showed that during active photosynthesis periods, $Y_1=282.443X_1+512.07$, and $Y_2=314.337X_1+16.913X_2$, while during dormant photosynthesis periods, $Y_1=391.009X_1+840.043$, and $Y_2=351.412X_1+32.765X_2$.

• Journal of the Korean Wood Science and Technology
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• 제44권6호
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• pp.897-902
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• 2016

This study was conducted to identify wood species from main pillars of Daeungjeon Hall, the main building of Jeonghyesa Temple located in Suncheon, Jeollanamdo Province in Korea. It was known that this temple had been built in the $8^{th}$ century by Hyeso, a national master in the Unified Silla period, and was designated as Treasure No. 804 in 1984 due to its historic and academic values. The results of wood species identification showed that main pillars from Daeungjeon Hall of the Jeonghyesa Temple were made of hard pine, Korean fir (Abies spp.) and Zelkova tree (Zelkova spp.). In addition to the wood species identification, floor plan documentation was also done to help identify what wood species had been used for main pillars. These results could be applied and utilized for the conservation and restoration of Daeungjeon Hall in future. This study may help with the authenticity of conservation works.