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当前位置: 首页 > 文章 > 四种常绿植物蒸腾速率、净光合速率的日变化及对环境的影响 福建林业科技 2006,33 (1) 82-85
Position: Home > Articles > Effects of Diurnal Variations of Rising Rate,Net Photosynthesis Rate 4 Kinds of Evergreen Plants on Environment Journal of Fujian Forestry Science and Technology 2006,33 (1) 82-85

四种常绿植物蒸腾速率、净光合速率的日变化及对环境的影响

作  者：
陈洪国
单  位：
咸宁学院化生系
关键词：
常绿植物;蒸腾速率;净光合速率;环境
摘  要：
4种常绿植物的蒸腾速率日变化呈单峰曲线,蒸腾速率的峰值和均值均以珊瑚树为最高,海桐和桂花次之,大叶黄杨的峰值和日均值最低,与4种植物的自由水含量的高低顺序一致。Pn的日变化呈双峰曲线,峰值分别出现在10时和14时左右,两峰间低谷值出现在12时左右,第1次峰值大于第2次峰值;其中以海桐的峰值和日均值最高,以大叶黄杨最低;光合能力的高低,与不同植物叶绿素的含量以及光补偿点和光饱和点有关。4种植物树冠内温度以海桐最低,吸尘能力以珊瑚树最强。树冠周围的湿度与蒸腾速率的变化一致,CO2含量与光合作用的大小呈反比,二者均与大气呈显著差异。
译  名：
Effects of Diurnal Variations of Rising Rate,Net Photosynthesis Rate 4 Kinds of Evergreen Plants on Environment
作  者：
CHEN Hong-guo(Department of Chemist and Biology of Xianning College,Xianning 437000,China)
关键词：
evergreen plant;rising rate;net photosynthesis rate;environment
摘  要：
4 kinds of evergreen rising rate diurnal variation assumed one peak curve,the peak vaule and average value of Viburnum odoratisimum were the highest,those of P.tobira and Osmanthus fragrans came second,those of E.japonica were lowest,the free moisture contents of 4 kinds of plants were in the same order.Pn diurnal variation assumed double peak curve,the peak value assumed at about 10∶00 and 14∶00 respectively,the low vale value occurred at around 12∶00,the first peak value was bigger than the second peak value;the P.tobira and E.japonica peak value and diurnal value were highest,and lowest;photosynthetic capacity had the relationship with the chlorophyll content and light compensation and saturation points.The temperature inside tree crown of P.tobira was lowest among 4 species,the dust collecting ability of V.odoratisimum was strongest,the humidity around the tree crown had the same changing with rising rate changing,CO_2 content assumed the inverse ratio of photo synthesis,2 ones assumed the significant difference with those in atmosphere.

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