垂枝藓Rhytidium rugosum及塔藓Hylocomium splendens对CO_2浓度升高的响应  

Effects of Elevated CO_2 Concentration on Rhytidium rugosum and Hylocomium splendens

作　　者：赵红燕[1] 胡忠健[1] 茹雅璐[1] 吴玉环[1,2] 

机构地区：[1]杭州师范大学生命与环境科学学院,浙江杭州310036 [2]中国科学院沈阳应用生态研究所,辽宁沈阳110016

出　　处：《杭州师范大学学报（自然科学版）》2012年第6期490-494,共5页Journal of Hangzhou Normal University(Natural Science Edition)

基　　金：国家自然科学基金项目(30970188);杭州师范大学科研启动项目(YS05203130);杭州师范大学本科生创新能力提升工程项目

摘　　要：利用开顶式培养室,通入含不同浓度CO2的空气,研究在CO2浓度升高的条件下垂枝藓(Rhytidi-um rugosum)及塔藓(Hylocomium splendens)的生长情况.结果表明:500μmol.mol-1 CO2时垂枝藓株高表现为下降趋势,而塔藓表现为升高趋势;在700μmol.mol-1 CO2时塔藓的生物量上升,而垂枝藓的生物量下降,两者的生物量与株高之比都有所增加.因此,在高CO2浓度环境中,塔藓的适应性更强;高浓度CO2促进植物侧向生长,但对叶绿素的含量影响不大.The growth characteristics of Rhytidium rugosum and Hylocomiurn splendens in open-top chambers in Changbai Mountain were studied. Two kinds of mosses were planted with different CO2 concentrations respectively. The plant height of R. rugosum degraded but that of H. splendens increased in the treatment of 500 μmol·mol-1CO2. With 700 μmol·mol-1CO2 concentration, the biomass of R. rugosurn degraded while that of H. splendens increased, and both of the ratios of biomass and plant height increased. The results indicate that H. splendens is much adapted to elevated CO2 concentration than R. rugosurn, and elevated CO2 concentration stimulates moss＇s lateral growth much than vertical growth, but with unobvious changes in chlorophyll contents.

关 键 词：CO2浓度升高 生物量 叶绿素 藓类 

分 类 号：Q945.11[生物学—植物学]