Protection Benefits in Different Types of Shelter Belts Studied by Using PIV System

Feng Rui; Wu Faqi; Lei Jinyin

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Protection Benefits in Different Types of Shelter Belts Studied by Using PIV System

- Protection Benefits in Different Types of Shelter Belts Studied by Using PIV System
- Bulletin of Soiland Water Conservation Vol. 26, Issue 2, Pages: 5-9(2007)
- 作者机构：
  
  西北农林科技大学资源环境学院陕西杨凌,712100
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- Published：2007
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Feng Rui, Wu Faqi, Lei Jinyin. Protection Benefits in Different Types of Shelter Belts Studied by Using PIV System[J]. Bulletin of Soiland Water Conservation, 2007, 26(2): 5-9.
DOI：

Feng Rui, Wu Faqi, Lei Jinyin. Protection Benefits in Different Types of Shelter Belts Studied by Using PIV System[J]. Bulletin of Soiland Water Conservation, 2007, 26(2): 5-9. DOI：

摘要

农田土壤风蚀沙化是北方农牧交错区农业生产发展的主要限制因子

为了研究防护林带防沙机理和防护效益

利用PIV(particle image veloci metry)系统

在风洞中对陕北靖边县3种不同的防护林模式进行了模拟实验研究。试验结果表明

从起动风速、风蚀强度和流场特征三方面来看

两行乔木中间夹两带灌木的防护林模式能达到最佳的防护效益

是3种防护林模式中最佳的。乔灌结合的防护林模式防沙效果较好的原因是能显著降低近地表层风速。

Abstract

Wind erosion is a significant factor limiting agricultural development in the north ecotone between agriculture and pasture. In order to study the mechanisms of windbreak

sand-fixation and protection benefits in shelter belts

wind erosion under three types of protective forest model was simulated in a wind tunnel experiment using the PIV system.Threshold shear velocity and wind erosion rate were measured

and velocity characteristics were obtained by using InsightNT softw are. Results show that the combination between arbor and shrub is a best protective forest structure model.The reason is that the structure model can significantly reduce wind velocity on soil surface.

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