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- Title
Difference of anti-fracture mechanical characteristics between lateral-root branches and adjacent upper straight roots of four plant species in vigorous growth period.
- Authors
LIU Peng-fei; LIU Jing; ZHU Hong-hui; ZHANG Xin; ZHANG Ge; LI You-fang; SU Yu; WANG Chen-jia
- Abstract
Taking four plant species, Caragana korshinskii, Salix psammophila, Hippophae rhamnides and Artemisia sphaerocephala, which were 3-4 years old and in vigorous growth period, as test materials, the anti-fracture forces of lateral-root branches and adjacent upper straight roots were measured with the self-made fixture and the instrument of TY 8000. The lateral-root branches were vital and the diameters were 1-4 mm. The results showed that the anti-fracture force and anti-fracture strength of lateral-root branches were lesser than those of the adjacent upper straight roots even though the average diameter of lateral-root branches was greater. The ratios of anti-fracture strength of lateral-root branches to the adjacent upper straight roots were 71.5% for C. korshinskii, 62.9% for S. psammophila, 45.4% for H. rhamnides and 35.4% for A. sphaerocephala. For the four plants, the anti-fracture force positively correlated with the diameter in a power function, while the anti-fracture strength negatively correlated with diameter in a power function. The anti-fracture strengths of lateral-root branches and adjacent upper straight roots for the four species followed the sequence of C. korshinskii (33.66 and 47.06 MPa)>S. psammophila (17.31 and 27.54 MPa)> H. rhamnides (3.97 and 8.75 MPa)> A. sphaerphala (2.18 and 6.15 MPa).
- Publication
Chinese Journal of Applied Ecology / Yingyong Shengtai Xuebao, 2016, Vol 27, Issue 1, p33
- ISSN
1001-9332
- Publication type
Article
- DOI
10.13287/j.1001-9332.201601.022