【摘要】 选取福建梅花山海拔1200m和455m地区57种常绿植物为研究对象,测定两海拔的植物叶片叶绿素a和叶绿素b含量,并计算叶绿素a/b、总叶绿素含量。结果表明:(1)植物叶绿素a、b,叶绿素a+b及叶绿素a/b值大多分布在一个相对集中的区域。(2)多数植物新叶叶绿素含量高于老叶,叶绿素a/b值低于老叶,但是新、老叶无显著差异。(3)不同海拔的植物叶片总叶绿素含量和叶绿素a/b值有明显差异,低海拔地区明显高于高海拔地区。植物通过总叶绿素含量和a/b值的变化以适应不同环境条件。更多还原

【Abstract】 The leaf chlorophyll content and Chla,Chlb,Chla/b of 57 evergreen tree species grown at two altitudes(1200m and455m) in Meihuashan National Nature Reserve were investigated.The main results were shown as follows:The values of Chla,Chlb,Chla+b and Chla/b of these trees distributed in a centralized region.The chlorophyll content of new leaves is higher than that of old leaves,Chla/b of new leaves is lower than that of old leaves.The chlorophyll content and Chla/b of tree leaves tended to decrease with the increasing altitude,and the trees grown at different altitudes(1200m and 455m) had obvious differences.The photosynthesis characteristics of plants changed with the environment they grown.更多还原