Spatial Variability of Reinforcement Provided by Juvenile Root Systems of Black Locust and Black Poplar

Tymoteusz Zydroń , Andrzej Gruchot , Marcin Kluba

Abstract

Our work aimed to determine the spatial distribution of the root cohesion of the roots of 8-year-old black locust and black poplar trees. The scope of our research and analyses included determining characteristics of root systems of the studied tree species by profiling the walls of a trench with a width and a depth of 1.0 m at a distance of 0.5 and 1.0 m from the trunks. Laboratory tests comprised determining the tensile strength of the selected root classes. A modified Schwarz model (RDM) was used to describe the horizontal distribution of roots in the soil. The increase in shear strength of the root-reinforced soil was determined by a strain bundle model in which the value of the force mobilized by the roots is described by the Weibull survival function (RBMw). The results of the root system measurements have shown that the black locust is characterized by a greater number of roots, while the roots of black poplar are thicker, which makes the relative surface of its roots larger. Calculations of root cohesion using the modified bundle model, taking into account the root system displacement, showed that the maximum value for the black locust was 9.4 and 6.4 kPa, and for the black poplar 6.4 and 6.2 kPa respectively at a distance of 0.5 and 1.0 m from the trunk. It was also shown that the optimal spacing of the trees of these species, necessary to achieve effective reinforcement of the soil, was approximately 4 m.
Author Tymoteusz Zydroń (FoEEaLS / DoHEaG)
Tymoteusz Zydroń,,
- Department of Hydraulic Engineering and Geotechnics
, Andrzej Gruchot (FoEEaLS / DoHEaG)
Andrzej Gruchot,,
- Department of Hydraulic Engineering and Geotechnics
, Marcin Kluba (FoEEaLS)
Marcin Kluba,,
- Faculty of Environmental Engineering and Land Surveying
Journal seriesPolish Journal of Environmental Studies, ISSN 1230-1485, e-ISSN 2083-5906, (N/A 40 pkt)
Issue year2019
Vol28
No5
Pages4027-4037
Publication size in sheets0.5
Keywords in Englishsoil reinforcement, root distribution, root bundle model, Weibull survival function
ASJC Classification2300 General Environmental Science; 2304 Environmental Chemistry
DOIDOI:10.15244/pjoes/96260
URL http://www.pjoes.com/pdf-96260-40905?filename=Spatial%20Variability%20of.pdf
Internal identifierWIŚIG/2019/63
Languageen angielski
Score (nominal)40
Score sourcejournalList
Publication indicators WoS Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2017 = 0.631; WoS Impact Factor: 2018 = 1.186 (2) - 2018=1.3 (5)
Citation count*
Additional fields
FinansowanieOur research was supported by the Ministry of Science and Higher Education, Republic of Poland (DS- 3322/KIWiG/2018).
Udział procentowyT. Zydroń: 50%, A. Gruchot: 40%, M. Kluba: 10%
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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