甘肃马衔山平车前叶片δ^(13)C的海拔和时间差异

The altitudinal and temporal variation of δ^(13) C values in leaves of Plantago media L.

以甘肃马衔山自然生长的平车前为材料 ,比较了不同海拔高度和不同月份下叶片δ13C的变化。结果表明 ,随海拔的升高 ,叶片δ13C值增大 ;生长初期叶片δ13C也高于生长后期叶片 δ13C值 ,并且叶片 δ13C具有年间差异。叶片 δ13C值的这种变化也许与植物对环境的适应有关。

The δ 13 C changes were studied in leaves of Plantago media L.which were collected from Maxian mountain at different altitudes and months.The results showed that the δ 13 C values increased with increasing altitudes.The δ 13 C values were also affected by the growth periods of leaves.The newly developed leaves had a higher δ 13 C values than the lately developed ones.Perhaps the altitudinal and temporal changes of δ 13 C values in leaves of Plantago media L.were related to the adaptation of Plantago media L.to environment.