Linking plant morphological traits to uprooting resistance in eroded marly lands (Southern Alps, France)
Linking plant morphological traits to uprooting resistance in eroded marly lands (Southern Alps, France)
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DOI：
10.1007/s11104-009-9920-5
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发表时间：
2009-11-01
期刊：
影响因子：
4.9
通讯作者：
Dutoit, T.
中科院分区：
文献类型：
--
作者：
Burylo, M.;Rey, F.;Dutoit, T.
在法国南阿尔卑斯山的泥灰质流域，土壤受到严重的水侵蚀，可能导致集中水流连根拔起小植物。因此，从简单的植物性状评估和预测植物对连根拔起的抵抗力非常重要，以便可以确定未来恢复侵蚀斜坡的最有效的植物策略。研究了生长在泥灰土地上的十二个物种。对于每个物种，都进行了原位侧向拔根试验，并在发育早期阶段测量了小植物的形态特征。结果表明，最大拔起力与茎基径呈显着正相关。对连根拔起的抵抗力取决于几个特征的组合。主根长度、细侧根比例和根拓扑是锚固强度的最佳预测因子。
In marly catchments of the French Southern Alps, soils are subjected to harsh water erosion that can result in concentrated flows uprooting small plants. Evaluating and predicting plant resistance to uprooting from simple plant traits is therefore highly important so that the most efficient plant strategy for future restoration of eroded slopes can be defined. Twelve species growing on marly land were studied. For each species, in-situ lateral uprooting tests were conducted and morphological plant traits were measured on small plants at the early stages of their development. The results show that maximum uprooting force was most positively correlated with stem basal diameter. Resistance to uprooting depends on a combination of several traits. Tap root length, the proportion of fine lateral roots and root topology were the best predictors of anchorage strength.