scholarly journals Effect of Rib Root Shape on the Rib Root Tensile Strength of Press and Injection Hybrid Molded Products Made with CF/PA6 Random Prepreg Sheet

2018 ◽  
Vol 67 (12) ◽  
pp. 1080-1086
Author(s):  
Kazuto TANAKA ◽  
Masaomi KAETSU ◽  
Tsutao KATAYAMA ◽  
Takeshi ISHIKAWA
Keyword(s):  
Tensile Strength ◽  
Root Tensile Strength

scholarly journals Root Traits and Biomechanical Properties of Three Tropical Pioneer Tree Species for Forest Restoration in Landslide Areas

Forests ◽  
2020 ◽  
Vol 11 (2) ◽  
pp. 179 ◽  
Author(s):  
Lee ◽  
Chu ◽  
Lin ◽  
Kung ◽  
Lin ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Young’S Modulus ◽  
Tree Species ◽  
Young's Modulus ◽  
Root Traits ◽  
Biomechanical Properties ◽  
Pioneer Species ◽  
Root Tensile Strength ◽  
Pioneer Tree ◽  
Macaranga Tanarius

Frequent earthquakes, monsoon torrential rains and typhoons cause severe landslides and soil erosion in Taiwan. Hibiscus taiwanensis, Macaranga tanarius, and Mallotus paniculatus are major pioneer tree species appearing on landslide-scarred areas. Thus, these species can be used to restore the self-sustaining native vegetation on forest landslides, to control erosion, and to stabilize slope. However, their growth performance, root traits and biomechanical properties have not been well characterized. In this study, root system and root traits were investigated using the excavation method, and biomechanical tests were performed to determine the uprooting resistance, root tensile strength and Young’s modulus of 1-year-old Hibiscus taiwanensis, Macaranga tanarius, and Mallotus paniculatus seedlings. The results reveal that relative to H. taiwanensis, M. tanarius and M. paniculatus seedlings had significantly larger root collar diameter, longer taproot length, higher root biomass, higher root density, higher root length density, heavier root mass, larger external root surface area, higher root tissue density, larger root volume, longer total root length, and a higher root tip number. Additionally, the height of M. paniculatus seedlings was significantly higher than those of H. taiwanensis and M. tanarius. Furthermore, the uprooting resistance and root tensile strength of M. paniculatus seedlings was significantly higher than those of H. taiwanensis and M. tanarius. Young’s modulus of M. paniculatus and M. tanarius seedlings was also significantly higher than that of H. taiwanensis. These growth characteristics and biomechanical properties demonstrate M. paniculatus and M. tanarius are superior than H. taiwanensis, considering growth performance, root anchorage capability, tensile strength and Young’s modulus. Taken as a whole, the rank order for species selection of these pioneer species for reforestation comes as: M. paniculatus M. tanarius H. taiwanensis. These results, along with knowledge on vegetation dynamics following landslides, allow us to better evaluate the effect of selective removal management of pioneer species on the resilience and sustainability of landslides.

Soil reinforcement potential of cultivated cardoon (Cynara cardunculus L.): First data of root tensile strength and density

CATENA ◽  
2022 ◽  
Vol 211 ◽  
pp. 106016
Author(s):  
Roberta Rossi ◽  
Pietro Picuno ◽  
Massimo Fagnano ◽  
Mariana Amato
Keyword(s):  
Tensile Strength ◽  
Soil Reinforcement ◽  
Cynara Cardunculus ◽  
Root Tensile Strength

scholarly journals Root tensile strength and root distribution of typical Mediterranean plant species and their contribution to soil shear strength

2008 ◽  
Vol 305 (1-2) ◽  
pp. 207-226 ◽  
Author(s):  
S. De Baets ◽  
J. Poesen ◽  
B. Reubens ◽  
K. Wemans ◽  
J. De Baerdemaeker ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Shear Strength ◽  
Plant Species ◽  
Root Distribution ◽  
Root Tensile Strength ◽  
Soil Shear Strength ◽  
Mediterranean Plant
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