SWAT模型在小流域水土保持减流减沙效益评价中的应用研究

Study on application of SWAT model in flow and sediment reduction benefit evaluation of soil and water conservation in small watershed

水土保持措施可有效地控制土壤侵蚀,定量评价水土保持措施的减流减沙效果,对合理优化和综合管理具有参考价值。本文以葫芦岛市郝台子小流域为研究对象,应用SWAT模型对不同措施下的减流减沙效果进行了分析研究。结果表明:水平梯田、保土耕作、封禁以及设立果园4种措施对于该流域的减流效果相差不明显,水平梯田减沙效果最为明显。可为类似的水土保持工作提供参考。

Soil and water conservation measures can effectively control soil erosion, and quantitatively evaluate flow and sand reduction effect of water and soil conservation measures, and it has reference value for rational optimization and comprehensive managenlent. Huludao Haotaizi small watershed is adopted as the research object, SWAT model is applied to analyze and study flow and sediment reduction effect under different soil and water conservation measures. The results show that four measures of horizontal terrace, soil conservation tillage, sealing and orchard have little difference on flow reduction effect in the river basin. The sand reduction effect of horizontal terraces on sediment reduction effect is the most prominent. The research results can provide reference for soil and water conservation in sinfilar small watershed areas.