Study on Preventing Effect of three Farmland Shelter-Forest Network on Soil Wind Erosion

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Study on Preventing Effect of three Farmland Shelter-Forest Network on Soil Wind Erosion

更新时间：2024-11-07

- Study on Preventing Effect of three Farmland Shelter-Forest Network on Soil Wind Erosion
- Issue 2, Pages: 5-8(2007)
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- Published：2007
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Study on Preventing Effect of three Farmland Shelter-Forest Network on Soil Wind Erosion[J]. 2007, (2): 5-8.
DOI：

Study on Preventing Effect of three Farmland Shelter-Forest Network on Soil Wind Erosion[J]. 2007, (2): 5-8. DOI：

摘要

在山东省夏津县黄河故道冲积沙地建立土壤风蚀试验区

采用标尺法对3种网格的农田防护林和对照地的土壤风蚀量进行观测

测定结果表明:农田防护林网可明显减少风蚀损失

其中

130m×300m林网相对于对照减少土壤风蚀量81%

260m×300m林网相对于对照减少78%

300m×400m林网相对于对照减少75%

即随着网格面积的增加对风蚀量的影响越来越小。同时

土壤风蚀程度与测定期间日平均风速>4 m/s的出现频率有密切关系

土壤风蚀量与风速之间的最佳拟合关系为幂函数关系

二者之间呈正相关关系

相关系数在0.95以上。黄河故道冲积沙地农田防护林网对5.0~5.9 m/s范围内的风速引起的土壤风蚀防治效果最好。

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