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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 1987.5
- 수록면
- 13 - 26 (14page)
이용수
초록· 키워드
One-year-old seedlings of Ginkgo biloba, potted in three different soils (nursery soil, mixed and sandy soil), were treated with simulated acid rain (pH 2.0, 3.0, 4.0 and 5.0) and tap water (control, pH 6.4) during the growing seasons (1985. 4.28 - 1985. 10.19) to examine the effects of acid rain on growth and physiological characteristics, and the relations between seedling growth and physiological characteristics. The results obtained in this study were as follows:1. The effects of soil types on the total, top and root dry weight per seedling were significant at 5% level, and those of the pH of the rain treated at 1% level. The total dry weight of the pH 3.0 sub-plot was the highest for nursery soil, while for mixed and sandy soils, those of the control and the pH 5.0 sub-plots were the highest, respectively.2. The leaf surface areas of pH 2.0 sub-plots severely decreased after July, but those of other sub-plots were not affected. The correlations between growth and leaf surface area differed among soil-types, however, the highest positive correlation was found in September.3. The injured leaf rate increased with decreasing pH levels of acid rain. Highly negative correlations between growth and injured leaf rate were found.4. The lower the pH level of acid rain treated was, the more the chlorophyll content was measured at the beginning of treatment, and the more severely it decreased at late growing season. A negative correlation between growth and chlorophyll content was found in May, but highly positive correlations were found in August, September and October.5. The photosynthetic ability decreased rapidly after July with decreasing pH levels. A highly positive correlation between growth and photosynthetic ability was found in August.
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참고문헌
참고문헌 신청최근 본 자료
UCI(KEPA) : I410-ECN-0101-2009-539-012104519
