Plant biomechanical strategies in response to frequent disturbance: uprooting of Phyllostachys nidularia (Poaceae) growing on landslide-prone slopes in Sichuan, China.
Plant biomechanical strategies in response to frequent disturbance: uprooting of Phyllostachys nidularia (Poaceae) growing on landslide-prone slopes in Sichuan, China.
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应对频繁干扰的植物生物力学策略：将生长在中国四川易发生滑坡的山坡上的毛竹（禾本科）连根拔起。
DOI：
10.3732/ajb.94.7.1129
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发表时间：
2007
影响因子：
3
通讯作者：
L. Jouneau
中科院分区：
文献类型：
--
作者：
A. Stokes;A. Lucas;L. Jouneau
竹子被认为是有用的控制滑坡，但我们观察到许多浅边坡失败的大节竹（Phyllostachys nidularia）在四川，中国的森林。因此，我们沿着沿着一个山谷清点了滑坡的发生和植被类型。为了量化竹根锚固，我们进行了拔根试验和测量植物形态特征。滑坡发生最大的网站与竹子和幼树。由于长径比（242 ± 6）高，秆失败是常见的。拔出试验表明，导致失效的最大力较小（1615 ± 195 N）。根拔力与预测因子侧根数和体积的组合呈强正相关（R（2）= 0.92），且根系高度浅表（深度= 0.15 ± 0.12 m），对边坡稳定性的贡献很小。在P. nidularia，它生长在滑坡倾向的斜坡上，令人惊讶的是，很少有资源被分配到锚定。我们认为，这种策略使这一先驱在陡峭的斜坡上的优势，在那里它有助于边坡稳定性和殖民地经常形成的差距，通过植被再生。较少的干扰将导致随后的次生演替和死亡的这种不耐荫的物种。
Bamboo is considered useful for controlling landslides, but we observed numerous shallow-slope failures in forests of big node bamboo (Phyllostachys nidularia) in Sichuan, China. Therefore, we inventoried landslide occurrence and vegetation type along one valley. To quantify bamboo root anchorage, we performed uprooting tests and measured plant morphological characteristics. Landslide occurrence was greatest at sites with bamboo and young trees. Culm failure was common because of the high length to diameter ratio (242 ± 6). Uprooting tests showed that the maximal force to cause failure was small (1615 ± 195 N). Uprooting force was strongly and positively regressed with a combination of the predictors lateral root number and volume (R(2) = 0.92), and root systems were highly superficial (depth = 0.15 ± 0.12 m), contributing little to slope stability. In P. nidularia, which grows on landslide-prone slopes, surprisingly few resources have been allocated to anchorage. We suggest that this strategy puts this pioneer at an advantage on steep slopes, where it contributes little to slope stability and colonizes frequently formed gaps through vegetative regeneration. Fewer disturbances would result in subsequent secondary succession and dying back of this shade intolerant species.
DOI：
10.5860/choice.45-2603
发表时间：
2007-03
期刊：
--
影响因子：
--
作者：
E. Johnson;K. Miyanishi
通讯作者：
E. Johnson;K. Miyanishi
四个树种幼苗的拔根和剪切抗力。
DOI：
--
发表时间：
2006
期刊：
Weed Biology and Management 6
影响因子：
--
作者：
Toukura;Y.;Devee;E.;Hongo;A.
通讯作者：
A.