升高气温对旱柳光合和生长的影响  

THE EFFECTS OF INCREASING AIR TEMPERATURE ON PHOTOSYNTHESIS AND GROWTH IN SALIX MATSUDANA

作　　者：何维明[1] 董鸣[1] 

机构地区：[1]中国科学院植物研究所植被数量生态学开放研究实验室,北京100093

出　　处：《林业科学》2003年第1期160-164,共5页Scientia Silvae Sinicae

基　　金：中国科学院资源与生态环境研究重大项目 (KZ95 1-B1-10 8);重点项目 (KZ95 2 -S1-12 6)资助

摘　　要：To explore the effects of air temperature rise(ATR)on photosynthesis and growth in the native xeric tree species, Salix matsudana in semi\|arid Mu Us sandland,the temperature gradient was set up through using small solar dome to increase air temperature.ATR had no significant effects on initial fluorescence,maximum quantum yield,and the ratio of maximum fluorescence to initial fluorescence of the leaves of this species,but had significant influence on their variable fluorescence,photosynthesis rate,transpiration rate,water use efficiency,and the ratio of substomatal CO 2 to atmospheric CO 2.ATR affected plant biomass,plant height,leaf weight ratio,root weight ratio,specific leaf area,and leaf area ratio significantly,while had no significant effects on specific root length.Moderate ATR may be beneficial to accelerate the species’ growth during growing season.To explore the effects of air temperature rise(ATR)on photosynthesis and growth in the native xeric tree species, Salix matsudana in semi\|arid Mu Us sandland,the temperature gradient was set up through using small solar dome to increase air temperature.ATR had no significant effects on initial fluorescence,maximum quantum yield,and the ratio of maximum fluorescence to initial fluorescence of the leaves of this species,but had significant influence on their variable fluorescence,photosynthesis rate,transpiration rate,water use efficiency,and the ratio of substomatal CO 2 to atmospheric CO 2.ATR affected plant biomass,plant height,leaf weight ratio,root weight ratio,specific leaf area,and leaf area ratio significantly,while had no significant effects on specific root length.Moderate ATR may be beneficial to accelerate the species' growth during growing season.

关 键 词：旱柳 气温 荧光特征 气体交换 生长 分配 光合作用 

分 类 号：S792.12[农业科学—林木遗传育种]