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[1]XU Haiyan,YU Weijie,WANG Qiaoli,et al.Mechanical Properties of Stem and Root of Main Plant Species in the Hilly-Gully Loess Plateau[J].Research of Soil and Water Conservation,2016,23(01):313-318,324.

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Mechanical Properties of Stem and Root of Main Plant Species in the Hilly-Gully Loess Plateau

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 23 Number of periods: 2016 01 Page number: 313-318,324 Column: Public date: 2016-02-28

Title:: Mechanical Properties of Stem and Root of Main Plant Species in the Hilly-Gully Loess Plateau

Author(s):: XU Haiyan¹, YU Weijie², WANG Qiaoli³, JIAO Juying²; 1. College of Forestry, Northwest A & F University, Yangling, Shaanxi 712100, China;
2. Institute of Soil and Water Conservation, Northwest A & F University, Yangling, Shaanxi 712100, China;
3. Zhouhe Township Government, Jingbian, Shaanxi 718500, China

Keywords:: the Hilly-Gully Loess Plateau; tensile resistance; bending stiffness; bending strength; mechanical property

CLC:: S157.1

DOI:: -

Abstract:: Mechanical properties of plant affect the capacity of vegetation to stabilize soil and intercept sediment and litter, and the survey on them is an indispensable part of the study on soil anti-erosion ability. Six small watersheds were selected for sampling in Yanhe River Basin. The main species were Artemisia gmelinii, Artemisia giralii, Lespedeza davurica, Heteropappus altaicus, Artemisia scoparia and Artemisia mongolica. Their mechanical properties were surveyed. The results showed that the root diameter for every species had significant correlation with its tensile resistance and tensile strength (p < 0.05), respectively, and both of them could be fitted by power function. As stem diameter increased, its stiffness strengthened and its strength became stable. For the stem of Artemisia scoparia, its main diameter, tensile resistance and bending stiffness were larger than those of the other species. Stem bending strength and root tensile strength of Lespedeza davurica were larger than those of the other species. Stem bending strength had significant correlation with cellulose content, lignin content and cellulose-content/lignin-content (p < 0.05) among the main species, respectively.

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