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논문 : 강원도 양양지역 소나무림의 지상부 바이오매스와 수관층 연료특성에 관한 연구
김성용 ( Sung Yong Kim ),이영진 ( Young Jin Lee ),장미나 ( Mi Na Jang ),서연옥 ( Yeon Ok Seo ),구교상 ( Kyo Sang Koo ),정성철 ( Sung Cheol Jung ),김경하 ( Kyung Ha Kim ) 한국임학회 2012 한국산림과학회지 Vol.101 No.2
본 연구의 목적은 강원도 양양지역에 분포하는 소나무림을 대상으로 지상부 바이오매스와 수관층 연료특성에 대하여 분석하고자 하였다. 연구대상지는 강원도 양양군 현남면 하월천리 일대 소나무림으로 선정하였으며, 총 13본의 표본목을 벌채하여 분석하였다. 본 연구 결과에 의하면, 양양지역 소나무림의 줄기밀도(g·cm-3)는 0.347~0.409, 지상부 바이오매스 확장계수는 1.251~1.419의 범위로 나타났다. 지상부 연료량은 총 161.6 Mg·ha-1로 나타났으며, 줄기 126.4 Mg·ha-1, 가지 29.3 Mg·ha-1, 잎 5.9 Mg·ha-1로 나타났다. 수관층 연료특성 인자에 관한 연구에서는 수관화 확산 시 연소될 수 있는 연소가능 연료(잎~1 cm이하 가지)의 비율은 45.2%로 나타났고, 연료량을 수관체적으로 나눈 연소가능 연료밀도(kg·m-3)는 평균 0.178로 나타났다. 본 연구의 결과는 소나무림의 바이오매스 및 탄소 흡수량 추정과 수관화 위험성을 연료적 관점에서 평가하는데 있어 유용한 기초자료가 될 것으로 사료된다. The objective of this study was to analyze the above-ground biomass and crown fuel characteristics of Pinus densiflora stands in Yangyang, Gangwon province. A total of thirteen representative trees were destructively sampled in Yangyang region. The results showed that the stem density (g·cm-3) was 0.347~0.409, whereas the above-ground biomass expansion factors ranged from 1.251~1.419. In terms of crown fuel biomass, the above-ground biomass was 161.6 Mg·ha-1 while the stem biomass, branch biomass and needle biomass were 126.4 Mg·ha-1, 29.3 Mg·ha-1 and 5.9 Mg·ha-1, respectively. Needles and twigs with less than 1 cm diameter accounted 45.2% of the total crown fuel load. The available crown bulk density, which was calculated by dividing the crown fuel load to the crown volume, was 0.178 kg·m-3. The results of this study on the biomass and carbon stocks estimation of the Pinus densiflora together with the crown fire hazard assessment based on crown fuel loads are very significant information for the forest managers.
Ok-Sik Chung,Hye-Jung Lee,Woon-Mok Sohn,Seung-Ha Lee,Il-Yong Park,Sang-Ah Oh,Jong-Yil Chai,Min Seo 대한기생충학열대의학회 2010 The Korean Journal of Parasitology Vol.48 No.4
Maritrema spp. (Digenea: Microphallidae) are parasites of birds, but have not been found in the Republic of Korea. In this study, metacercariae of Maritrema sp. were discovered in the Asian shore crab, Hemigrapsus sanguineus, caught in the mud-flats of Jebu-do, Hwasung-gun, Gyeonggi-do, and the adult flukes were confirmed by experimental infection into mice. Based on the symmetric ribbon-like vitellarium, adult flukes of Maritrema sp. were identified, but did not belong to previously described species in terms of the following morphologic characteristics: ceca reaching to the lateral wall at the anterior border of the ovary; ventral sucker larger than oral sucker; a prominent metraterm; and vitellarium forming a complete ring. Hence, we named this microphallid M. jebuensis n. sp. after the island where the second intermediate hosts were collected. From this study, it has been shown that Maritrema sp. is distributed in Korea and transmitted by the Asian shore crab, H. sanguineus.
Seo, Ju-Hee,Leem, Jong-Han,Ha, Eun-Hee,Kim, Ok-Jin,Kim, Byung-Mi,Lee, Ji-Young,Park, Hye-Sook,Kim, Hwan-Cheol,Hong, Yun-Chul,Kim, Young-Ju Blackwell Publishing Ltd 2010 Paediatric and perinatal epidemiology Vol.24 No.2
<P>Summary</P><P>Seo J-H, Leem J-H, Ha E-H, Kim O-J, Kim B-M, Lee J-Y, Park H-S, Kim H-C, Hong Y-C, Kim Y-J. Population-attributable risk of low birthweight related to PM<SUB>10</SUB> pollution in seven Korean cities. <I>Paediatric and Perinatal Epidemiology</I> 2010; <B>24:</B> 140–148.</P><P>To understand the preventable fraction of low birthweight (LBW) deliveries due to maternal exposure to air pollution during pregnancy in Korea, it is important to quantify the population-attributable risk (PAR). Thus, we investigated the association between maternal exposure to air pollution during pregnancy and LBW, and calculated the PAR for air pollution and LBW in seven Korean cities. We used birth records from the Korean National Birth Register for 2004. A geographic information system and kriging methods were used to construct exposure models. Associations between air pollution and LBW were evaluated using univariable and multivariable logistic regression, and the PAR for LBW due to air pollution was calculated.</P><P>Of 177 660 full-term singleton births, 1.4% were LBW. When only spatial variation of air pollution was considered in each city, the adjusted odds ratios unit of particulate matter <10 µm in diameter (PM<SUB>10</SUB>) for LBW were 1.08 [95% confidence interval [CI] 0.99, 1.18] in Seoul, 1.24 [95% CI 1.02, 1.52] in Pusan, 1.19 [95% CI 1.04, 1.37] in Daegu, 1.12 [95% CI 0.98, 1.28] in Incheon, 1.22 [95% CI 0.98, 1.52] in Kwangju, 1.05 [95% CI 1.00, 1.11] in Daejeon and 1.19 [95% CI 1.03, 1.38] in Ulsan.</P><P>The PARs for LBW attributable to maternal PM<SUB>10</SUB> exposure during pregnancy were 7%, 19%, 16%, 11%, 18%, 5% and 16% respectively. Because a large proportion of pregnant women in Korea are exposed to PM<SUB>10</SUB>– which is associated with LBW – a substantial proportion of LBW could be prevented in Korea if air pollution was reduced.</P>
The Simulation of Tree Diameter Growth of a Stand
Ok Ha Seo 한국산림과학회 1990 한국산림과학회지 Vol.79 No.1
A method for simulating the forest diameter growth was investigated. The foundamental hypothesis is that the diameter growth obeys the so-called MITSCHERLICH`s law with respect to its age and its occupancy area. According to the growth record analysis of the two experimental Hinoki stands (Chamaecyparis obtusa S. et Z.) at Owase, a turned out that three growth parameters and the D.B.H, at the starting year of the survey v~:ere distributed with a four dimensional logarithmic normal density function. On that ground a set of the growth parameters of the individual tree can be constructed experimentally from its D.B.H, at the starting year of the survey. Furthermore, according to the accurate measuremen of the tree rings it appears that the growth fluctuation as a time series is linearly autoregressive. In terms of the constructed growth parameters and of the growth fluctuations the tree growth simulation can be obtained on the computer as a numerical solution of the MITSCHERLICH`s stochastic differential equation. The 53 years growth record of the stands is well simulated with a sufficient accuracy through this method.
Seo, Kyoung-Chun,Choi, Kyung-Ha,Noh, Jeong-Sook,Kim, Mi-Jin,Song, Yeong-Ok The Korean Society of Food Science and Nutrition 2009 Preventive Nutrition and Food Science Vol.14 No.1
To improve the functional and organoleptic properties of the fermented soymilk with Bacillus subtilis 2829PNU015 which has chungkukjang like flavor, functional materials from the edible plant extracts with well-known health promoting effects were examined by fibrinolytic activity and sensory evaluation. Among five samples such as Corni fructus, garlic, purple sweet potato, aged garlic, and pumpanini were tested, Corni fructus showed the highest fibrinolytic activity. The appearance and taste of the fermented soymilk (FS) was varied to the amount of Corni fructus added, and the highest acceptability of FS was observed from FS containing 1% Corni fructus extracts ($10^{\circ}$Brix) in it. Best way of applying Corni fructus to the fermented soymilk (FFS) was found to be incubating the mixture of soymilk and Corni fructus with Bacillus subtilis. FFS demonstrated dose dependent radical scavenging activities and these activities were found to be higher than those of FS at designated concentration.