[1]LIU Shizeng,ZHAN Kejie,FANG Etian,et al.Research for Making Method of Helianthus annuus Stalk Sand Barrier and Its Windbreak and Sand-fixation Efficiency[J].Research of Soil and Water Conservation,2016,23(06):98-101.
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Research for Making Method of Helianthus annuus Stalk Sand Barrier and Its Windbreak and Sand-fixation Efficiency
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
23
Number of periods:
2016 06
Page number:
98-101
Column:
Public date:
2016-12-28
- Title:
- Research for Making Method of Helianthus annuus Stalk Sand Barrier and Its Windbreak and Sand-fixation Efficiency
- Keywords:
- windbreak and sand fixation; Helianthus annuus stalk; sand barrier; wind velocity; sand flux
- CLC:
- S157.1
- DOI:
- -
- Abstract:
- Making mechanical sand barrier with Helianthus annuus stalk can change waste into treasure with good windbreak and sand fixation efficiency. By measuring the wind velocity at the height of 0.1 m, the wind profiles in the scope of 0 m to 2 m, the sand flux and sand collection quantity in the leeward side of of Helianthus annuus stalk sand barrier with different distance, we found that Helianthus annuus stalk belt could decrease wind velocity at the height of 0.1 m in the leeward side of it, in the scope of 0~15 m, wind velocity decreasing efficiencies decreased with the increase of distance to the sand barrier, and increased with addition of the Helianthus annuus stalk belt number, the variation ranges increased with height first, and then decreased. Below 0.14 m, the decrease efficiency of sand flux in the spot at the leeward side with a distance of 1 m to the sand barrier was larger than 98%, single Helianthus annuus stalk belt could obstruct sand flux from windward and fix sand in location. Sand particles will deposit around the Helianthus annuus stalk sand barrier after a period of time, and the thickness of the sand deposition decreased with the increase of the distance to the sand barrier, and followed the power function.
- References:
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