지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 1999.8
- 수록면
- 210 - 216 (7page)
이용수
초록· 키워드
오류제보하기
TREGRO, a computer simulation model of individual tree growth, was applied to estimate ozone (O₃) effects on aspen (Populus tremuloides) growth under ambient and 1.7 times ambient O₃ of Seoul in 1996. The three highest O₃ (Kuui-dong, Ssangmun-dong, Sungsoo-dong) and the two lowest O₃ sites (Mapo-dong, Namgajwa-dong) were evaluated. The current ambient O₃ did not affect aspen growth compared to simulation without O₃. The only effect was 6.6 percent of total assimilated carbon loss at Ssangmun-dong where the level of O₃ was greatest among the 21 sites examined. Decrease as much as 50 percent of total carbon gain was calculated at 1.7 times ambient O₃ of the three highest sites. The carbon loss by O₃ came from biomass of tissues and total nonstructural carbon (TNC) such as starch and sugar. The most sensitive fraction was TNC and the next was root biomass. Foliage mass was not affected by O₃, Structural biomass loss was at best 1 to 3 percent at 1.7 times ambient O₃ at the two lowest sites. The daily carbon simulation was affected by O₃ mainly during Growth Period 4 (Jul. 21-Oct. 26). Correlations between site, dose, and the simulated responses of aspen (tissue biomass, TNC, respiration, and senescence) ranged from -0.703 to -0.973 depending on the plant responses. The ozone effects on poplar in Seoul are not severe currently, but are probably measurable at Ssangmun-dong. However, severe O₃ effects on biomass would occur if O₃ levels increase to 1.7 times ambient O₃ in Seoul. In addition, O₃ could weaken the trees, thus increasing suscep￢tibility to pathogens or insects.
목차
Materials and Methods
Results
Discussion
References
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UCI(KEPA) : I410-ECN-0101-2009-481-017560143