低浓度SO_2对油松苗生长的影响  

EFFECT OF LOW SO_2 CONCENTRATION ON CHINESE PINE SEEDLING GROWTH

作　　者：唐鸿寿[1] AOKI Masatoshi TOTSUKA Tsumugu 

机构地区：[1]中国科学院生态环境研究中心,北京100085 [2]Tokyo University of Agricultural and Technology

出　　处：《应用与环境生物学报》2005年第3期304-307,共4页Chinese Journal of Applied and Environmental Biology

基　　金：国家自然科学基金项目(No.30170188);国家重点基础研究发展规划项目(2002CB410803)资助~~

摘　　要：油松(PinustabulaeformisCarr.)苗暴露在SO2浓度分别为0(CK)、0.1mgm?3(T1)、0.2mgm-3(T2)和0.4mgm?3(T3)的4个人工气候箱内60昼夜.TI、T2组油松生长情况与CK无显著性差异.T3组油松针叶颜色发现异常,针叶中类胡萝卜素含量下降29%,含硫量增加242%,从针叶渗出的钾离子量比CK增加198%,光合速率下降7%,蒸腾速率增加17%,单株干重下降19%,相对生长速率下降3μgmg-1d-1.Chinese pine (Pinus tabulaeformis Carr.) seedlings were exposed to SO2 in 4 phytotrons for 60 days and nights, and the concentrations of SO2 in the phytotrons were 0 (CK), 0.1 mg m 3 (T1), 0.2 mg m 3 (T2) and 0.4 mg m 3 (T3), respectively. No significant difference in Chinese pine growth was found from T1, T2 and CK. In T3 the abnormity of needle colour was observed. Compared with control, the carotenoid content of needle decreased by 29%, sulfur content of needle increased by 242%, amount of potassium ion leaching from needle increased by 198%, photosynthetic rate decreased by 7%, transpiration rate increased by 17%, dry weight decreased by 19% per plant and relative growth rate decreased by 3 μg mg-1 d-1. Fig 7, Tab 3, Ref 8

关 键 词：油松 SO2 针叶颜色 钾离子 

分 类 号：X173[环境科学与工程—环境科学]