Detachment and transport characteristics of sandy loam soil by raindrop action in the northern Loess Plateau, China
| Autor: | G.L. Li, Tenghui Zheng, Yu-Jie Fu, G.X. Gao, D. Wang |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Splash
Aggregate (composite) 010504 meteorology & atmospheric sciences Soil Science Soil science Soil classification 04 agricultural and veterinary sciences Loess plateau 01 natural sciences Loam Loess 040103 agronomy & agriculture Erosion 0401 agriculture forestry and fisheries Environmental science Surface layer Agronomy and Crop Science 0105 earth and related environmental sciences Nature and Landscape Conservation Water Science and Technology |
| Zdroj: | Journal of Soil and Water Conservation. 73:705-713 |
| ISSN: | 1941-3300 0022-4561 |
| DOI: | 10.2489/jswc.73.6.705 |
| Popis: | The detachment and transport of soil aggregates, which result from raindrop splash, is the initial stage and an important step for water erosion. To study the detachment and transport characteristics of loamy sand soil in the surface layer (0 to 5 cm) in the northern Loess Plateau, the experiment determined the splash effects of five raindrop diameters (2.67 mm, 3.05 mm, 3.39 mm, 3.79 mm, and 4.05 mm) on soil aggregates by simulating rainfall. Splash plates were used to collect the aggregate fragments at five distance intervals (0 to 10 cm, 10 to 20 cm, 20 to 30 cm, 30 to 40 cm, and 40 to 50 cm), and seven aggregate fractions were sieved. Then, we analyzed the relationships between raindrop diameters, splash distances, splash amounts, and the size distribution of the aggregate fragments. The results indicated that the splash erosion was distributed at a splash distance of 0 to 20 cm. In addition, the splash amount decreased exponentially with increasing splash distance and increased exponentially with raindrop diameter (p |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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