CAJ | 학술논문

造林种草，增加植被覆盖度是防止土壤侵蚀的重要措施。通过人工模拟降雨试验，探讨生草覆盖下紫色土坡面侵蚀产沙的动态变化。结果表明，有生草覆盖的坡面径流含沙量较裸地的径流含沙量更快达到稳定状态；坡面侵蚀产沙率随覆盖度增加呈指数型递减，且坡下种草的减沙效果最好；覆盖度与降雨强度对坡面侵蚀产沙量的影响存在对比消长关系，但生草覆盖度对产沙量的影响小于降雨强度的变化对产沙量的影响。
조림충초，증가식피복개도시방지토양침식적중요조시。통과인공모의강우시험，탐토생초복개하자색토파면침식산사적동태변화。결과표명，유생초복개적파면경류함사량교라지적경류함사량경쾌체도은정상태；파면침식산사솔수복개도증가정지수형체감，차파하충초적감사효과최호；복개도여강우강도대파면침식산사량적영향존재대비소장관계，단생초복개도대산사량적영향소우강우강도적변화대산사량적영향。
Increasing the vegetation coverage by afforestation and grass planting is one of the most impor-tant measures to prevent and control soil erosion. In this paper,we use artificial rainfall simulation experi-ment to study the effects of different grass coverage patterns and rainfall intensity on soil loss in purple soil slopeland. The results show that the runoff sediment concentration of the slopeland with grass coverage is easier to reach a steady state than in bare land. Moreover,erosion and sediment yield rate decreases expo-nentially with the increase of grass coverage and the best effect is observed when grass covers the lower part of the slope. The rainfall intensity and coverage rate have contrasting influences on the total sediment yield,with the former playing a more significant role in sediment production.