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기후변화환경 하에서 멸종위기식물 섬시호(산형과)의 보전방안 마련을 위한 광, 수분, 영양소에 대한 반응 연구
안경호 ( Kyeong-ho Ahn ),유영한 ( Young-han You ),조규태 ( Kyu-tae Cho ) 한국환경생태학회 2016 한국환경생태학회지 Vol.30 No.5
본 연구는 멸종위기식물인 섬시호를 대상으로 기후변화의 원인인 CO₂+온도상승과 식물의 생육 및 분포에 중요한광, 수분, 영양소를 조합 처리하여 지구온난화에 대해 어떻게 반응하는지 알아보고, 기후변화환경 하에서의 보전방안을 마련하고자 하였다. 실험은 야외의 CO₂ 농도와 온도를 반영한 대조구와 유리온실에서 대조구보다 CO₂ 농도가 약2배, 온도가 약 2℃ 높게 유지한 CO₂+온도상승구로 구분하여 2010년부터 2011년까지 생육시켜 관찰하고 비교하였다. 섬시호의 생육반응은 광, 수분, 영양소보다 CO₂+온도상승의 영향을 더 많이 받았고, CO₂+온도상승구에서 영양소가 많은 조건일 때 잘 자랐다. 잎 수는 대조구에 비해 CO₂+온도상승구에서 광이 낮은 구배와 영양소가 높은 구배에서 많았고, 잎 폭은 대조구에 비해 CO₂+온도상승구에서 광과 영양소가 중간 구배에서 좁았다. 그러나 지상부 길이, 잎몸길이 그리고 잎자루 길이는 대조구와 CO₂+온도상승구 간에 차이가 없었다. 본 연구결과를 토대로 미래기후환경 하에서 섬시호의 보전을 위해서는 섬시호 자생지에 NH<sub>4</sub><sup>+</sup>, NO₃, P₂O<sub>5</sub>, K₂O 등이 포함된 영양소를 공급하고, 섬시호 자생지가 파괴되지 않도록 하여야 한다. 또한 섬시호의 자생지와 유사한 환경조건을 가진 곳을 발굴하여 복원함으로써 서식지를 확대하여야 한다. In order to elucidate the ecological responses of B. latissimum under global warming situation and prepare the conservation measures, we cultivated the plant within control(ambient CO₂+ambient temperature) and treatment(elevated CO₂+elevated temperature) from 2010 to 2011. Rising CO₂ concentration was treated with 2 times and temperature increased with 2.0℃above than control. As a result, Growth response has received more the effect of CO₂+Temperature rising than light, moisture, nutrients, and it was grow well in CO₂+temperature rise sphere when many nutrients, and it was grow well in CO₂+temperature rise sphere when many nutrients. No. of leaves were many number in the treated group compared to the control at a low light gradient and high nutrient gradient, leaf width was narrow in the treatment compared to the control in the middle gradient of light and nutrients. Shoot length, petiole length, lamina length was no difference between control and CO₂+temperature rise sphere. Based on the results of this study, in order to preserve the B. latissimum in future climate, we should be supply of nutrients(containing NH<sub>4</sub> <sup>+</sup>, NO₃, P₂O<sub>5</sub>, K₂O, etc.) in the habitat of the B. latissimum, and must ensure that the habitat of B. latissimum is not destroyed. Also, We should be find similar area with habitat of the B. latissimum, restoring, expanding.
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Magnesium sulfate ( Magrose (R) ) 와 Nifedipine ( Adalat (R) ) 의 조기진통 억제효과 및 안전성에 대한 비교연구
김종현(Jong Hyeon Kim),안경호(Kyeong Ho Ahn),김재연(Jae Yeun Kim),정영주(Young Ju Jeong),조성남(Sung Nam Cho) 대한산부인과학회 2001 Obstetrics & Gynecology Science Vol.44 No.6
N/A Objective: The aim of this study was to compare the efficacy and safety of magnesium sulfate, ritodrine hydrochloride and nifedipine in the management of preterm labor. Material and methods: 180 women with documented preterm labor were randomly assigned to receive magnesium sulfate (n=60), ritodrine hydrochloride (n=60) and nifedipine (n=60) as initial tocolytic therapy. 30 women with documented preterm labor were allocated to administer fluid only and bed rest as control group. Patient could be switched to another tocolytic regimen if they continued to have contractions or side effects. The main outcome variables examined were days gain in utero, success rate, side effects and neonatal outcome. Results: There were no significant differences in maternal characteristics between the groups. The days gain in utero was no statistically different in the three groups(magnesium sulfate, ritodrine hydrochloride and nifedipine) but markedly longer in the three groups than the control group (p<0.01). The total success rate was similar in the three groups, but side effects were much more in the magnesium sulfate and ritodrine group than the nifedipine group (p<0.05). The respiratory distress syndrome in neonate was decreased in the three groups than the control group without statistical significance. Conclusion: Nifedipine is an effective, safe, and well-tolerated tocolytic agent. In this retrospective study, total success rate of controlling preterm labor was similar in the three groups, but patients who received nifedipine were less side effects than magnesium sulfate or ritodrine group.
ScienceON
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