%0 Journal Article
%T Effects of enhanced UV-B radiation on the growth of five bryophytes in Changbai Mountains<br>UV－B辐射增强对长白山五种藓类植物生长的影响
%A WU Yu-huan
%A GU Yan-hong
%A LIU Peng
%A <br>吴玉环
%A 顾艳红
%A 刘鹏
%A Zoltán Tuba
%A WU Yu-huan
%A GU Yan-hong
%A LIU Peng
%A Zoltán Tuba
%J 应用生态学报
%D 2007
%I 
%X Five bryophytes (Rhytidium rugosum, Rhytidiadelphus triquetrus, Hylocomium splendens, Hylocomium pyrenaicum, and Polytrichum alpinum) were exposed to 0.2 kJ x m(-2) x d(-1) (visible light under native condition, CK), 3.0 kJ x m(-2) x d(-1) (simulated dose of UV-B irradiance at the tundra in Changbai Mountains, medium dose of UV-B irradiance, T1), and 6.0 kJ x m(-2) x d(-1) (high dose of UV-B irradiance, T2) to investigate the effects of enhanced UV-B radiation on plant height, biomass, and chlorophyll content. The results indicated that medium and high UV-B radiations decreased the plant height, biomass, and chlorophyll content of R. triquetrus and H. splendens by 32.3%, 62.4%, and 81.3%, and 21.4%, 59.4%, and 62.8%, respectively, and the relative growth rates were negative. Enhanced UV-B radiations had less effect on P. alpinum chlorophyll content but doubled its below-ground biomass, and slightly increased the biomass of R. rugosum. P. alpinum and R. rugosum had higher tolerance against UV-B radiation, while R. triquetrus and H. splendens were more sensitive to UV-B radiation.
%K bryophytes
%K UV-B radiation
%K growth
%K chlorophyll<br>藓类
%K UV-B辐射
%K 生长
%K 叶绿素
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=42FEDDFE54F8BCD9D5FD1926ABDD7722&aid=3083027CDCA2D67E&yid=A732AF04DDA03BB3&vid=13553B2D12F347E8&iid=9CF7A0430CBB2DFD&sid=5E3A696E84245F10&eid=FCB16C6DAE3686F1&journal_id=1001-9332&journal_name=应用生态学报&referenced_num=0&reference_num=26