Slope gradient impacts on rill morphological characteristics: Using indoor simulation experiment on loamy clay under certain rainfall intensity
文献类型：期刊论文
| 作者 | He, Ji-jun; Sun, Li-ying; Duan, Guang-yao; Cai, Qiang-guo |
| 刊名 | CATENA
 |
| 出版日期 | 2023-03-01 |
| 卷号 | 222页码:106895 |
| ISSN号 | 0341-8162 |
| 关键词 | Rill erosion Rill morphology Terrestrial laser scanning Rainfall simulation Rill formation |
| DOI | 10.1016/j.catena.2022.106895 |
| 文献子类 | Article |
| 英文摘要 | In the present study, the rill morphological parameters and their spatial distributions were investigated using indoor rainfall simulation experiments in combination with 3D terrestrial laser scanning technique. Moreover, the optimal rill morphological indicators for rill erosion evaluation were selected based on the relationship of rill morphological parameters and erosion amount. The results showed that total rill length (L), rill density (p), maximum width (Wmax), the degree of contour line departure (mu) and shape ratio (I) increased with the increase of slope gradient, whilst the mean rill depth (Dmean), mean rill width (Wmean) and width/depth ratio (W/D) decreased with the increase of slope gradient. The spatial distribution pattern of each rill morphology parameter was also changed with slope gradient, showing differences in upper slope, central slope and lower slope. Most of rill morphological parameters were highly correlated with rill erosion amount, except the mean rill width (Wmean), degree of contour line departure (mu), and rill density (p). The plane area of rill (Parea) or the degree of rill dissection (o) was selected as the optimal morphological parameter to predict rill erosion amount, followed by the maximum area of cross section (CSmax), the maximum rill depth (Dmax), and the mean rill depth (Dmean). In particular, the parameters of CSmax and Dmax are recommended for rill erosion estimation based on the conve-nience and ease of data acquisition. |
| WOS关键词 | CONCENTRATED FLOW ; SOIL-EROSION ; VELOCITY ; DISCHARGE ; SHEET ; WIDTH ; AREA ; PREDICTION ; RESISTANCE ; MAGNITUDE |
| WOS研究方向 | Geology ; Agriculture ; Water Resources |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000960832400001 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/190546]  |
| 专题 | 陆地水循环及地表过程院重点实验室_外文论文 |
| 作者单位 | 1.[He, Ji-jun 2.Capital Normal Univ, Elementary Educ Coll, Base State Lab Urban Environm Proc & Digital Model, Resources Environm & GIS Key Lab Beijing, Beijing 100048, Peoples R China 3.[Sun, Li-ying 4.Chinese Acad Sci Beijing, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China 5.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100101, Peoples R China 6.Chinese Acad Sci, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess Pl, Minist Water Resources, Yangling 712100, Peoples R China |
| 推荐引用方式 GB/T 7714 | He, Ji-jun,Sun, Li-ying,Duan, Guang-yao,et al. Slope gradient impacts on rill morphological characteristics: Using indoor simulation experiment on loamy clay under certain rainfall intensity[J]. CATENA,2023,222:106895. |
| APA | He, Ji-jun,Sun, Li-ying,Duan, Guang-yao,&Cai, Qiang-guo.(2023).Slope gradient impacts on rill morphological characteristics: Using indoor simulation experiment on loamy clay under certain rainfall intensity.CATENA,222,106895. |
| MLA | He, Ji-jun,et al."Slope gradient impacts on rill morphological characteristics: Using indoor simulation experiment on loamy clay under certain rainfall intensity".CATENA 222(2023):106895. |
入库方式： OAI收割
来源：地理科学与资源研究所
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