S-Space College of Agriculture and Life Sciences (농업생명과학대학) The Arboretum, Seoul National University (수목원) Bulletin of the arboretum Seoul National University (수목원 연보) Bulletin of the arboretum Seoul National University no.07 (1986)
人工酸性雨가 몇 樹種의 種子發芽와 苗木生長에 미치는 影響
Effects of Artificial Acid Rain on Seed Germination and Seedling Growth of Several Woody Species
- 李敦求; 金甲泰
- Issue Date
- The Arboretum, Seoul National University
- Bulletin of the Seoul National University Arboretum, no.7, pp.15-21
- Artificial acid rain (pH 2,3,4, and 5) was treated on the seeds of six woody species to examine
its effects on germination and seedling growth. Artificial acid rain was prepared by diluting sulfuric
acid and nitric acid (H2S04 : HN03=3 : 1, v/v) with water and water (pH 6.4) was also used
as control. Acid rain was sprayed to seeded pots three times per week. About 5mm of acid rain was
treated each time from April 12th to August Nth, 1986. Germination, seedling establishment and
seedling growth were measured and compared among the treatments. The results were summarized
1. No germination was observed from the pots treated with pH 2.0.
2. Germination and seedling establishment rate of Ilex crenata were the highest from the pot
treated with pH 3.0 whereas those of Schizandra nigra the best from the pot treated with
pH4.O. The pH 5.0 treatment showed the highest value in other species.
3. Zlex crenata, Magnolia sieboldii, Amorpha fruticosa and Diospyros lotus appeared less sensitive
in seed germination and seedling establishment when acid rain (pH 3.0 or higher) was
treated, whereas Magnolia kobus was more sensitive.
4. The differences in seedling height growth of Magnolia sieboldii, Zlex crenata and Diospyros
lotus were significant at the 1% level among the treatment levels of acid rain, whereas those
in Magnolia kobus and Amorpha fruticosa were not significant.
5. Seedling dry weights of Magnolia sieboldii differed significantly at the 1% level among the
treatment and those of Magnolia kobus and Amorpha fruticosa at the 5% level. However,
those of Zlex crenata and Diospyros lotus did not at the 5% level. .
6. Significant differences in top dry weight of Magnolia kobus, in root dry weight of Magnolia
sieboldii, and in both top and root dry weights of Amorpha fruticosa were found among the
treatment levels of acid rain.