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산림부문 기후변화 적응 정보의 실효성 제고를 위한 고찰
박고은,정종빈,최원일,김은숙,양희문 한국기후변화학회 2023 한국기후변화학회지 Vol.14 No.6
Forest is one of the representative territorial ecosystems which contributes to mitigate climate change by absorbing carbon in the air and also is exposed to climate change pressure. Due to forest is under climate change pressure, adaptation is necessary to forest sector to sustain or enhancing forest ecosystem services and contribution to mitigation. Considering long-life span of forest ecosystem, the effects of adaptation measures in the forest emerges in long-term, while the climate change can affect the forest immediately. Therefore, scientific information-based decision making on adaptation is needed to avoid maladaptation. This study aims to examine the conditions for producing information supporting adaptation of Korea's forestry sector and suggest matters to be considered to increase the effectiveness of the information. The duty of the climate change impact assessment and vulnerability in forest sector has been legislated since 2015. And the standardized methodology on investigating and assessing impact in forest sector has been developed. Regarding facilitate the effectiveness of adaptation information, we found challenges as following points; establishment of vulnerability assessment mechanism, integrative impact assessment, strengthen research on monitoring and assessment after adaptation action, establishment of adaptation feedback loops, sustaining developing methodology on investigation and assessment, and the other relevant efforts to enhance quality of impact assessment.
박고은,김찬범,안지애,Tluang Hmung Thang,Wai Phyoe Maung,Khaing Hsu Wai,권진오,박찬우 한국농림기상학회 2016 한국농림기상학회지 Vol.18 No.4
The Bagan, the central part of Myanmar, is dry zone where the mean annual precipitation is less than 600 mm for the last ten years. Forest in this region has been degraded due to biotic and abiotic disturbances. While there have been various efforts to rehabilitate the degraded area, the information on growth and physiological characteristics of planting species and the impacts of planting trees in the region still lacks. Therefore, this study was conducted to determine the growth and physiological water use efficiency characteristics of five species (Azadirachta indica A. Juss., Acacia catechu Willd., Eucalyptus camaldulensis Dehn., Acacia leucophloea (Roxb.) Willd. and Albizia lebbek (L.) Willd.) which are utilized as rehabilitation species in the dry zone and to identify the impacts of tree planting on microclimate change in dry zone. The growth and the foliar carbon isotope composition of seedlings and the above mentioned five species planted in 2005 were measured. And from February 2015 to January 2016, microclimatic factors air temperature and relative humidity at 60 cm and 2 m above soil, soil temperature, soil water contents and precipitation were measured at every 30-minute interval from the two weather stations installed in the plantation located in Ngalinpoke Mt. Range. One was established in the center of A. indica plantation, and the other was in the barren land fully exposed to the sunlight. Among the five species, A. indica and A. lebbek which showed higher water use efficiency could be recommended as rehabilitation species in dry zone. Planting trees in the dry area was shown to affect the change of microclimate with shading effects, declining temperature of the land surface and aridity of the air, and to contribute to conserving more water in soil by preventing direct evaporation and containing more water with fine roots of trees.
Polyurethane 함침된 Poly(trimethylene terephthalate) 나노섬유 웹과 마이크로섬유 웹의 특성 분석
박고은,강은옥,박초희,남영식,김진홍,박원호,Park, Ko Eun,Kang, Yun Ok,Park, Cho Hee,Nam, Young Sik,Kim, Jin Hong,Park, Won Ho 한국섬유공학회 2013 한국섬유공학회지 Vol.50 No.3
Poly(trimethylene terephthalate) (PTT), a semi-crystalline polyester, has been used in many applications because of its good dyeability and good mechanical properties such as elasticity. Sorona (DuPont) and Corterra (Shell Chemicals) are some trade names of PTT. We describe herein a PTT nanofibrous web fabricated by electrospinning, which is a simple technique for generating nanofibers from a polymer solution and a melt. PTT pellets were dissolved in 1,1,1,3,3,3-hexafluoro-2-propanol (HFIP) followed by electrospinning to yield PTT nanofibers with an average diameter of $900{\pm}97nm$. Then, the PTT nanofibrous web was impregnated with a polyurethane (PU) solution. The resulting material had better mechanical properties and also displayed a lower water contact angle than the PTT nanofibers because a relatively hydrophilic PU was coated onto the PTT nanofibrous web. Additionally, the pilling property of the PU-impregnated PTT nanofibrous web was enhanced by the induced welding among the PTT nanofibers because of PU impregnation. The air permeability of the PTT nanofibrous web was evaluated both before and after PU-impregnation. The results indicated that the PU-impregnated PTT nanofibrous web could be used in various industrial applications.