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.

作　　者：陈拓[1] 秦大河[1] 任贾文[1] 孙维贞[1] 陈雄[2] 

机构地区：[1]中国科学院兰州冰川冻土研究所冰芯与寒区环境开放实验室,兰州730000 [2]兰州大学干旱农业生态国家重点实验室,兰州730000

出　　处：《西北植物学报》2000年第4期672-675,共4页Acta Botanica Boreali-Occidentalia Sinica

基　　金：中国科学院新疆阜康荒漠生态系统观测试验站基金资助

摘　　要：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.

关 键 词：平车前 Δ^13C 海拔梯度 叶片 时间变化 

分 类 号：Q948.11[生物学—植物学] Q946