模拟酸雨对梣叶槭的作用和植物营养  

Role of Simulated Acid Rain on Acer negundo and Plat Nitrition

作　　者：杜英磊[1] ChristopheNN'soukpoe-Kossi RaymondBelanger RogerMLeblanc 

机构地区：[1]中国科技大学基础物理中心,合肥230026

出　　处：《Acta Botanica Sinica》1999年第1期80-87,共8页Acta Botanica Sinica（植物学报：英文版）

摘　　要：应用光声光谱和调制荧光测量技术研究了模拟酸雨对叶槭（ＡｃｅｒＮｅｇｕｎｄｏＬ．）的短期作用。用ｐＨ值分别为５．６、４．５和３．０的模拟酸雨对相应的三个样本组的梣叶槭树苗进行了为期三个月的跟踪观察和研究。结果表明，用归一化氧信号、光化学能量贮备、归一化可变荧光（ＦＶ／Ｆｍ）、光化学和非光化学叶绿素荧光猝灭等所表示的光合作用活性对这三个样本组的顺序为ｐＨ４．５＞ｐＨ３．０＞ｐＨ５．６。实验证实由于酸度水平增加，酸雨促进了生长率增加。从植物营养角度对结果进行了讨论。The short-term effects of simulated acid rain on Acer negundo L. have been investigated using photoacoustic spectroscopy and medulated fluorescence measurements. Three seeding groups of Acer negundo L.were treated with simulated acid rain at pH 3 .0, 4.5 and 5 .6 levels for three months. The results indicatedthe photosynthetic activity, expressed in terms of normalized oxygen evolution signal, photochemical energystorage, normalized variable fluorescence (Fv/Fm), photochemical and non-photochemical chlorophyll fluo- fluorescence quenching, ranges in the ordre pH 4. 5 > pH 3. 0 >pH 5. 6. This stimulation effect has been confirmed by increased growth rate observed in relation with increased acidity levels. The nutritional aspects of thisfavorable effect of the acid rain on plant growth were discussed.

关 键 词：Chen叶槭 氧释放 光化学 植物营养 模拟酸雨 

分 类 号：S792.350.2[农业科学—林木遗传育种] X503.235[农业科学—林学]