%0 Journal Article %T The responses of 17-years old Chinese fir shoots to elevated CO_2
CO_2增长对杉木中龄林针叶光合生理生态的影响 %A ZHANG Xiao Quan %A
张小全 %J 生态学报 %D 2000 %I %X 通过对17a生杉木人工林小枝的活体测定,研究了大气CO2增长对杉木中龄林净光合、呼吸、气孔导度和水分利用效率等生理生态特性的影响。结果表明,在CO2浓度为45μmol/L左右时,杉木针叶净光合速率比正常大气CO2下提高1倍以卢,气孔导度和蒸速率有不同程度的降低,水分利用效率提高约1 ̄2倍;同时使光补偿点降低,饱和点和光抑制点提高,光量子效率提高40% ̄295%且阳酝 大于阴枝,针叶暗呼吸降低20% %K elevated CO 2 %K net photosynthesis %K transpiration %K stomatal conductance %K water use efficiency %K dark respiration
CO2增长 %K 杉木净光合速率 %K 气孔导度 %K WEU %K 暗呼吸 %U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=FE163E5DB2274E5937319DE98913EC37&aid=7D742CC627033810&yid=9806D0D4EAA9BED3&vid=A04140E723CB732E&iid=38B194292C032A66&sid=A22854835F81B3F8&eid=7D6CD8918B045FD4&journal_id=1000-0933&journal_name=生态学报&referenced_num=29&reference_num=6