紫色土坡面水流跌坑形态特征及其成因
文献类型：期刊论文
| 作者 | 贺秀斌 ; 严冬春; 文安邦; 史忠林
|
| 刊名 | 山地学报
 |
| 出版日期 | 2012-02 |
| 卷号 | 30期号:1页码:30-35 |
| 关键词 | 跌坑 土壤侵蚀 坡面流 紫色土 |
| 其他题名 | Configuration Characteristic and Cause of Drop-Pit Development on Purple Slopeland |
| 通讯作者 | 文安邦 |
| 中文摘要 | 跌坑的形成是坡面侵蚀过程中的重要一环,是细沟开始出现的临界形态,跌坑的贯穿标志着细沟的形成。本研究采用模拟降雨与微地形测量相结合的方法,调查了不同雨强下紫色土坡面跌坑的发育过程及其形态分布。试验结果表明,降雨初期紫色土坡面水流跌坑边界模糊,横断面上跌坑基本在相同水平线上,与紫色土颗粒组成较粗有关;1.83～2.33 mm/min的雨强下,顺坡跌坑平均间距变化于8.2～9.4 mm之间,跌坑深度顺坡分布呈现较大的波动性,平均深度介于1.4～1.8 cm,总体上随雨强呈增大趋势;横断面上跌坑宽度变化相对较大,平均宽度介于9.4～16.3 cm,随雨强变化趋势不明显;跌坑水平间距除边界外相对稳定,地势低洼处优先形成跌坑,但也并非尽然;基于运动波理论分析认为,紫色土坡面跌坑的连续分布是坡面流运动波的能量周期性波动作用形成。 |
| 英文摘要 | The investigation on the configuration characteristic of drop-pit is the precondition of rill development mechanism research． This study adopted the methods of artificial rainfall and micro-landform measure to investigate the configuration characteristic of drop-pit development on purple soil slope-land． The results displayed that: Firstly， the drop-pit on the sameness horizontal line on transect when the drop-pit were initiated in rainfall． And then，the drop-pit was incised deepen at some point than others，results in overland flow was concentrated at this point． The configuration of micro-morphology evolved when the depth of drop-pit deepen． Although，the drop-pit distributed anywhere，the distance between drop-pit along the slope was similar in different rainfall intensity． The depth of drop-pit were displayed fluctuated along the slope，and had the similar trend with rainfall intensity，reflected the dynamic characteristic of overland flow． On transect，the distance between drop-pit was random，and the point of drop-pit occurred was stochastic too． So it implies that the forming of drop-pit was coupling caused by overland flow and difference erodibility of purple soil． |
| 分类号 | S157.1 |
| 收录类别 | CSCD |
| 资助信息 | 国家科技支撑计划项目课题(No.2011BAD31B03);中国科学院西部行动计划项目(No.KZCX2-XB3-09) |
| 语种 | 中文 |
| CSCD记录号 | CSCD:4621640 |
| 公开日期 | 2012-12-17 |
| 源URL | [http://192.168.143.20:8080/handle/131551/4584]  |
| 专题 | 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 科技与合作处 |
| 推荐引用方式 GB/T 7714 | 贺秀斌,严冬春,文安邦,等. 紫色土坡面水流跌坑形态特征及其成因[J]. 山地学报,2012,30(1):30-35. |
| APA | 贺秀斌,严冬春,文安邦,&史忠林.(2012).紫色土坡面水流跌坑形态特征及其成因.山地学报,30(1),30-35. |
| MLA | 贺秀斌,et al."紫色土坡面水流跌坑形态特征及其成因".山地学报 30.1(2012):30-35. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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