| 女贞种子和幼苗对模拟酸雨的反应 |
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| 引用本文： | 樊后保,臧润国. 女贞种子和幼苗对模拟酸雨的反应[J]. 林业科学, 2000, 36(6): 90-94 |
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| 作者姓名： | 樊后保 臧润国 |
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| 作者单位： | 1. 福建林学院资源与环境系 南平353001
2. 中国林业科学研究院森林生态环境研究所 北京100091 |
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| 基金项目： | 日本国际绿化推进中心(JIFPRO)资助项目。 |
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| 摘 要： | 将女贞种子和１年生幼苗置于不同ｐＨ值的模拟酸雨条件下观测和分析其形态和生理变化。结果表明，不同处理间女贞种子发芽率无统计上的显著差异，但ｐＨ２．０和ｐＨ３．５的模拟酸雨对种子发芽显示了一定的抑制作用。在ｐＨ２．０的模拟酸雨条件下，女贞幼苗叶片表现明显的受害症状，叶绿素含量下降，细胞透性增加，叶汁液酸化，从而使幼苗生长严重受阻。在ｐＨ３．５的处理下幼苗没有表现明显的形态和生理变化，但生长量呈现下降趋
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| 关 键 词： | 女贞 模拟酸雨 种子萌发 生长效应 酸沉降 |
| 修稿时间： | 1999-01-13 |
RESPONSES OF SEEDS AND SEEDLINGS OF% LIGUSTRUM LUCIDUM %TO SIMULATED ACID RAIN |
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| KosukeWaki. RESPONSES OF SEEDS AND SEEDLINGS OF% LIGUSTRUM LUCIDUM %TO SIMULATED ACID RAIN[J]. Scientia Silvae Sinicae, 2000, 36(6): 90-94 |
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| Authors: | KosukeWaki |
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| Abstract: | Observation and analysis were made on changes in morphology and physiology of seeds and seedlings of %Ligustrum lucidum% which were subjected to a simulated acid rain adjusted to different pH levels. The results showed that differences in germination rates were not statistically significant among the treatments, but pH2.0 and pH3.5 acid treatments were found to inhibit germination slightly. Under the exposure to pH2.0 treatment, seedling growth was severely retarded, due to the visible damage to foliage, decreased chlorophyll contents, elevated leaf cell permeability, and acidified leaf sap. While no significant morphological and physiological changes were observed, seedlings exhibited growth declines by pH3.5 treatment. Top growth was stimulated by pH5.0 acid treatment. No significant treatment effects were observed at pH 6.0. |
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| Keywords: | Ligustrum lucidum% Simulated acid rain Seed germination Growth effect |
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