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Effect of slope aspect to roots growth of two plants on rocky slope
Author(s): HUANG Hao-feng, XU Hong-yu, SONG Gui-long
Pages: 58-
62
Year: 2013
Issue:
4
Journal: Grassland and Turf
Keyword: highway slope; root growth; slope aspect; root architectural character;
Abstract: 以京承高速公路(3期)边坡为例,采用挖掘法调查2个不同坡向胡枝子和紫穗槐根系的地下分布,分析不同坡向2种灌木根系生长的差异.结果表明:(1)阴坡胡枝子和紫穗槐根系长度和根系干重比阳坡的高;(2)阳坡胡枝子根系集中在0~10 cm土层,阴坡胡枝子集中在10~20 cm土层,而阴坡和阳坡紫穗槐90%以上都分布在地下20 cm土层;(3)2个边坡胡枝子细根的长度比例最大,但是阳坡较阴坡粗根比例有所增加,对于紫穗槐,阴坡粗根的比例最大,阳坡细根的比例最大;(4)根系的地下分布深度和不同径级的根长比例在2坡向边坡存在差异.
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