| 王全九,穆天亮,王辉.坡度对黄土坡面径流溶质迁移特征的影响[J].干旱地区农业研究,2009,27(4):176~179 |
| 坡度对黄土坡面径流溶质迁移特征的影响 |
| The effects of slope on solute concentration in runoff on the loess slope |
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| DOI：10.7606/j.issn.1000-7601.2009.04.34 |
| 中文关键词: 降雨径流 径流溶质 黄土坡面 |
| 英文关键词:rainfall-runoff solute in runoff loess slope |
| 基金项目:中国科学院“流域水土工程”创新团队；中国科学院“百人计划” |
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| 中文摘要: |
| 通过田间模拟降雨试验，分析了坡度对坡面物质迁移特性的影响。结果显示，坡度对坡面物质迁移的影响十分显著；降雨强度一定时，坡度达到15°左右时，径流量达到最大；坡度对径流养分流失量的影响是通过径流量起主导作用，径流量大相应径流携带养分流失总量增加。利用幂函数对径流溶质浓度变化过程进行了拟合，结果显示幂函数可以很好反映田间坡面溶质随地表径流变化过程，说明在侵蚀环境下径流溶质浓度变化过程符合幂函数。 |
| 英文摘要: |
| Serious soil erosion reduce the amount of nutrient in soil losses, and the slope degree is one of the main factors of effect soil solute transporting into runoff. In the paper the effects of slope degree on the soil solute transport into runoff was further analyzed through the experimental data in field. The results indicate that runoff amount and velocity may inflect the effect of slope on the runoff formation. The runoff amount reaches to the maximum value when the slope degree is 15 for the fixed rainfall intensity. The effect of sole degree on the soil solute transport into runoff may be infected by the runoff a
mount, and the amount of solute in runoff increases as the runoff amount increases. The power function was used to fit the experimental data of the solute concentration in runoff. The results indicate that the power function may be used to fit the experimental data of the solute concentration in runoff, and the results may provide some guidance for analysis of the features of the soil solute transport with runoff. |
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