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[1]SU Xuemeng,LIU June,ZHOU Zhengchao,et al.Root Tensile and Mechanical Properties of Three Typical Plants in the Loess Hilly Region[J].Research of Soil and Water Conservation,2019,26(03):259-264.

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Root Tensile and Mechanical Properties of Three Typical Plants in the Loess Hilly Region

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 26 Number of periods: 2019 03 Page number: 259-264 Column: Public date: 2019-04-12

Title:: Root Tensile and Mechanical Properties of Three Typical Plants in the Loess Hilly Region

Author(s):: SU Xuemeng¹, LIU June^1,2, ZHOU Zhengchao^1,2, LI Qiujia¹, ZHAO Fuwang¹; 1. School of Geography and Tourism, Shaanxi Normal University, Xi’an 710062, China;
2. National Demonstration Center for Experimental Geography Education, Shaanxi Normal Univers6 ity, Xi’an 710062, China

Keywords:: roots; stress-strain curve; tensile resistance; elastic modulus; Loess Plateau

CLC:: S157.5

DOI:: -

Abstract:: Plant roots play an important role in slope stability in the loess hilly region. And tensile mechanical properties of plant roots are the main factors affecting slope protection of plant. Based on field sampling and indoor simulation experiment and laboratory analysis, the tensile mechanical properties of three typical plants roots (Sophora viciifolia, Artemisia gmelinii, Carex lanceolata Boott) in the hilly area of the Loess Plateau were studied. The results showed that:(1) with certain root length, the maximum root tensile strength of the three plants decreased with root diameter increasing; within certain root diameter, the maximum root tensile strength decreased with increase of root length. In addition, the elastic modulus decreased with increase of both root diameter and length; (2) the average maximum tensile resistance of the three species decreased in the order; Sophora viciifolia (12.135 N) > Carex lanceolata Boott (11.194 N) > Artemisia gmelinii (9.168 N); the average tensile strength ranked as the sequence, Artemisia gmelinii (15.718 MPa) > Carex lanceolata Boott (15.486 MPa)>Sophora viciifolia (6.457 MPa); the average elastic modulus decreased in order, Artemisia gmelini (2.900 MPa/mm) > Sophora viciifolia (1.698 MPa/mm) > Carex lanceolata Boott(1.003 MPa/mm). According to the results, Artemisia gmelinii has the best ability of soil fixation and slope protection among the studied three species, which can be a suitable species to maintain soil and water. The results provide the data basis for slope protection and soil and water conservation with vegetation on the Loess Plateau.

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