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林业科学 ›› 2013, Vol. 49 ›› Issue (7): 158-162.doi: 10.11707/j.1001-7488.20130723

• 研究简报 • 上一篇    下一篇

酸沉降胁迫对不同家系马尾松幼苗耐酸性的影响

王水良1, 王平1, 许建华2   

  1. 1. 南京林业大学化学工程学院 南京 210037;
    2. 南京市环境监测中心站 南京 210013
  • 收稿日期:2012-02-01 修回日期:2012-12-06 出版日期:2013-07-25 发布日期:2013-07-23
  • 通讯作者: 王平
  • 基金资助:

    国家自然科学基金面上项目(31270680);江苏省"六大高峰人才"资助项目(2011-XCL-018);江苏高校优势学科建设工程资助项目。

Assessment of Acid-Tolerant Parameters of Different Pinus massoniana Families under Acid Deposition Stress

Wang Shuiliang1, Wang Ping1, Xu Jianhua2   

  1. 1. School of Chemical Engineering, Nanjing Forestry University Nanjing 210037;
    2. Nanjing Environmental Monitoring Center Nanjing 210013
  • Received:2012-02-01 Revised:2012-12-06 Online:2013-07-25 Published:2013-07-23

关键词: 降水酸度, 不同家系, 马尾松, 适酸性能

Abstract:

The seedlings of 16 elite Masson pine (Pinus massoniana) families, with stable high-yield, including family 35, 38, 76, 78, 79, 80, 88, 89, 90, 114, 115, 116, 117, 119, 16, 147, and 151, were used to explore the effects of precipitation acidity on their acid tolerance. The physiological parameters (biomass, relative plasma membrane permeability, chlorophyll) of the families cultivated in root-boxes outdoor were measured under treatments by spraying simulated acid rain at different pH values (2.5, 3.5, 4.5 and 5.6). The results showed that the biomass and chlorophyll content decreased with the increase of rain acidity, but the ratios of chlorophyll a/b increased with the increase of rain acidity. In addition, with the rain acidity increased, the relative plasma membrane permeability of the pine seedlings increased, suggesting that the injury of cell membrane was enhanced. These parameters varied with different P. massoniana families. Meanwhile, when rain pH decreased from 5.6 to 4.5, these parameters were slightly decline, but a significant decline was observed from pH 3.5 to 2.5, indicating that these pine families had relatively high productivity under mild acid environment at pH 4.5 to 5.6, and suggesting the tree species, Masson pine, would be suitable for being planted in mild acid soils.

Key words: rain acidity, different families, Pinus massoniana, acid-tolerant parameters

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