| 油蒿与沙蒿枝构件特征研究 |
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| 引用本文： | 张德魁,王继和,马全林,刘虎俊,刘有军.油蒿与沙蒿枝构件特征研究[J].草原与草坪,2009(1):43-46. |
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| 作者姓名： | 张德魁 王继和 马全林 刘虎俊 刘有军 |
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| 作者单位： | 甘肃省荒漠化防治重点实验室甘肃省治沙研究所,甘肃武威,733000 |
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| 基金项目： | 甘肃省院地合作项目，中国科学院"西部之光"资助项目，甘肃省自然科学基金，中青年科技基金 |
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| 摘 要： | 研究了生长在腾格里沙漠南缘油蒿与沙蒿两种固沙半灌木植物的枝构件特征。结果表明：油蒿与沙蒿大部分枝条分枝角度较大，为中等分枝角度类型（分枝角度50°～70°）；油蒿与沙蒿枝条的伸展从3级枝到1级枝呈现减弱的趋势，即3级枝到1级枝的长度是逐渐变短的，且油蒿各级枝条长度均大于沙蒿的对应枝级的枝条长度；油蒿与沙蒿的枝径比和逐步分枝率均呈增加的趋势，油蒿的各级枝径比高于沙蒿，而逐步分枝率却比沙蒿的低。
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| 关 键 词： | 油蒿 沙蒿 枝构件特征 |
Study on branch module characteristics of Artemisia ordosica and Artemisia arenaria |
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| ZHANG De-kui,WANG Ji-he,MA Quan-lin,LIU Hu-jun,LIU You-jun.Study on branch module characteristics of Artemisia ordosica and Artemisia arenaria[J].Grassland and Turf,2009(1):43-46. |
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| Authors: | ZHANG De-kui WANG Ji-he MA Quan-lin LIU Hu-jun LIU You-jun |
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| Institution: | Gansu Key Laboratory of Desertification Combating;Gansu Desert Control Research Institute;Wuwei 733000;China |
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| Abstract: | The branch module characteristics of Artemisia ordosica and A.arenaria were studied.The result showed that the branching angles of most branches of A.ordosica and A.arenaria were big,which could be grouped into medium-class of branching angle(the branching angle ranges from 50° to 70°).The stretch of branches showed a weakening tendency from third-grade to first-grade branches,it suggested that the branches from thirdgrade to first-grade were gradually becoming short.The branches of different grades of A.ordosica were longer than that of A.arenaria;the branch-stem ratio and the stepwise bifurcation ratio of both A.ordosica and A.arenaria showed an increasing tendency.The ratio of branches diameters of different grades of A.ordosica was bigger than that of A.arenaria;and the stepwise bifurcation ratio of A.ordosica was lower than that of A.arenaria. |
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| Keywords: | Artemisia ordosica Artemisia arenaria branch module characteristic |
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