Studies on eco-physiological characteristics of photosynthetic of several local plant
song qingan1; 2; tong fangping1; 2; yi aiqing1; 2; li gui3; liu xiu3(1.hunan forestry academy; changsha 410004; china; 2.trees clones breeding technology key laboratory of hunan province; changsha 410004; china; 3.central south university of forestry and technology; changsha 410004; china)