红松幼苗对CO2浓度升高的生理生态反应

应用生态学报 ›› 2001, Vol. ›› Issue (1): 27-30.

红松幼苗对CO₂浓度升高的生理生态反应

韩士杰, 周玉梅, 王琛瑞, 张军辉, 邹春静

中国科学院沈阳应用生态研究所, 沈阳110016

收稿日期:2000-06-07 修回日期:2000-08-03 出版日期:2001-01-25
通讯作者: 韩士杰,男,1956年生,研究员,博士生导师,主要从事森林界面生态学研究,发表论文60余篇.E-mail:hansj@iae.syb.ac.cn
基金资助:
中国科学院“百人计划”资助项目;国家自然科学基金(30070158);中国科学院陆地生态过程开放研究实验室基金资助项目

Ecophyslological response of Pinus koraiensis seedlings to elevated CO₂

HAN Shijie, ZHOU Yumei, WANG Chenrui, ZHANG Junhui, ZOU Chunjing

Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016

Received:2000-06-07 Revised:2000-08-03 Online:2001-01-25

摘要/Abstract

摘要： 研究了用开顶箱控制CO₂浓度在500和700μmol·mol^-1左右时红松幼苗的生理生态反应.结果表明,高浓度CO₂(500、700μmol·mol^-1CO₂)和对照(对照开顶箱、裸地)条件下,红松幼苗的净光合速率与气孔导度之间的变化不同.红松幼苗在500μmol·mol^-1CO₂条件下,RuBPcase活性最高,呈现光合上调反应,日平均净光合速率最大,叶绿素及可溶性糖含量最高;而生长在700μmol·mol^-1CO₂的红松幼苗呈现光合下调反应,光合作用明显低于对照植株,其酶活性及物质含量均最低.

Abstract: Studies on the ecophysiological response of Pinus koraiensis seedlings were conducted in open-top chambers which were controlled with CO₂ concentration of about 500, 700μmol·mol^-1 .The result shows that there were different responses in net photosynthetic rate, stomatal conductance at high CO₂(500, 700μmol·mol^-1), ambient CO₂ concentrations.Under 500μmol·mol^-1 CO₂,the carboxylase activity of RuBP was the highest,the photosynthesis showed “up-ward”,the average daily net CO₂ assimilation was the greatest,and the contents of chlorophyll, soluble sugars were the highest.While under 700μmol·mol^-1 CO₂,the photosynthesis showed “down-ward”, was lower than that of the control,and the enzyme activity, the contents of substances were the lowest.

中图分类号:

Q945

韩士杰, 周玉梅, 王琛瑞, 张军辉, 邹春静. 红松幼苗对CO₂浓度升高的生理生态反应[J]. 应用生态学报, 2001, (1): 27-30.

HAN Shijie, ZHOU Yumei, WANG Chenrui, ZHANG Junhui, ZOU Chunjing . Ecophyslological response of Pinus koraiensis seedlings to elevated CO₂[J]. Chinese Journal of Applied Ecology, 2001, (1): 27-30.

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红松幼苗对CO₂浓度升高的生理生态反应

Ecophyslological response of Pinus koraiensis seedlings to elevated CO₂

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