| 砒砂岩区沙棘群落根系层的垂直分布规律 |
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| 引用本文： | 胡建忠,刘丽颖,殷丽强,郭海,杜文嫣.砒砂岩区沙棘群落根系层的垂直分布规律[J].防护林科技,2011(1):15-19. |
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| 作者姓名： | 胡建忠 刘丽颖 殷丽强 郭海 杜文嫣 |
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| 作者单位： | 胡建忠,殷丽强,郭海,杜文嫣,HU Jian-zhong,YIN Li-qiang,GUO Hai,DU Wen-yan(水利部水土保持植物开发管理中心,北京,100038);刘丽颖,LIU Li-ying(中国林业科学研究院) |
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| 基金项目： | 晋陕蒙砒砂岩区沙棘生态工程 |
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| 摘 要： | 砒砂岩区沙棘根系的根质量、根长、根数等参数,在从土表向下面深层延伸的过程中,一般先是由少到多,急剧增加;然后再由多到少,慢慢递减.计八沙棘林下侵入的草本层根系后,即沙棘群落根系随土深的空间分布可用CUBIC和INVERSE两类模型很好地表示.沙棘群落根系主要分布在0-50 cm的表土层中.这种规律既有利于沙棘群落吸收季...
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| 关 键 词： | 砒砂岩 沙棘 人工群落 根质量 根长 根数 垂直分布 |
Vertical Distribution Law of Roots for Hippophae rhamnoides Community in Soft Sandstone Area |
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| HU Jian-zhong,LIU Li-ying,YIN Li-qiang,GUO Hai,DU Wen-yan.Vertical Distribution Law of Roots for Hippophae rhamnoides Community in Soft Sandstone Area[J].Protection Forest Science and Technology,2011(1):15-19. |
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| Authors: | HU Jian-zhong LIU Li-ying YIN Li-qiang GUO Hai DU Wen-yan |
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| Institution: | HU Jian-zhong1,LIU Li-ying2,YIN Li-qiang1,GUO Hai1,DU Wen-yan1(1.Development Center for Soil & Water Conservation Plant,Ministry of Water Resources,Beijing 100038,China,2.Chinese Academy of Forestry) |
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| Abstract: | In the soft sandstone area,the weights,lengths,numbers of roots for Hippophae rhamnoides increase sharply in the topsoil and then decrease gradually with the soil depths.Because of the invaded grasses,roots for Hippophae rhamnoides community appear to be well represented by two models of CUBIC & INVERSE.Hippophae rhamnoides community roots distribute in the topsoil of 0-50 cm,which is useful not only for absorbing the runoffs to maintain the growth of Hippophae rhamnoides community,but benefiting a lot for ... |
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| Keywords: | soft sandstone Hippophae rhamnoides artificial community root weight root length root number vertical distribution |
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