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作 者 ：高玉葆,任安芝,王巍,王金龙

期 刊 ：生态学报 2002年 22卷 10期 页码：1758~1764

关键词：黄柳；再生枝；现存枝；株高；基径；叶片大小；光合作用；

Keywords:Salix gordejevii, regenerated shoots, standing shoots, plant height, shoot base diameter, leaf blade size, photosynthesis,

摘 要 ：对黄柳经平茬后形成的再生枝和未平茬的现存枝的光合作用、株高、基径、叶片大小等形态特征进行了比较研究 ,结果表明再生枝比现存枝具明显的生长优势 :再生枝高度及高度频度分布均与现存枝十分接近 ;再生枝基径显著大于现存枝 ,前者过细和过粗枝条的比例均较低 ,基径频度分布趋于正态分布 ,后者细枝条比例较高 ,基径频度分布符合对数正态分布 ;同时再生枝叶片更长、更宽 ,叶长和叶宽接近于平均值的叶子所占比例更大。在上午时段内叶片温度和光合有效辐射随气温同步上升 ,黄柳叶片的净光合速率总体上都比较高 ,再生枝和现存枝之间的表现差异明显。

Abstract:Salix gordejevii is a kind of pioneer shrub on moving and semi-moving dunes in Horqin Sandy Land, Inner Mongolia. It is also widely cultivated there for soil conservation or as fuel source. In this paper, the regenerated shoots and standing shoots of Salix gordejevii were investigated on leaf photosynthesis, leaf blade size, plant height and diameter, and some other related growth parameters. The plots for experiment were on two semi-fixed dunes with a slope of 5～10 degrees. Salix gordejevii in plot I was...

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