Article ; Online: Analysis and simulation of nitrogen loss during water erosion process on windward slope under wind-driven rain conditions
Catena. 2023 July, v. 228 p.107146-
2023
Abstract: Wind-driven rain (WDR) is a common source of soil erosion in nature and usually occurs on windward slopes. This study investigated the effects of WDR events at different wind velocities of 0, 2, 3, 5, 7, 8 m s⁻¹ and rainfall intensities of 30, 60, 90 mm ... ...
| Abstract | Wind-driven rain (WDR) is a common source of soil erosion in nature and usually occurs on windward slopes. This study investigated the effects of WDR events at different wind velocities of 0, 2, 3, 5, 7, 8 m s⁻¹ and rainfall intensities of 30, 60, 90 mm h⁻¹ on runoff, sediment yield, and total nitrogen (TN) loss processes on windward slopes. Additionally, the study constructed quantitative relationships between TN loss rate and simultaneous runoff and sediment using indoor simulated WDR experiments. The distributed soil erosion model KINEROS2 was then modified to embedded with these relationships, and used to simulate and verify the runoff, sediment yield, and TN loss processes during WDR events on windward slopes. The results showed an initial substantial increase followed by a gradual stabilization trend in runoff rates, sediment yield loss rates, and sediment-associated TN loss rates on windward slopes. As wind velocity increased from 0 to 8 m s⁻¹ under a rainfall intensity of 90 mm h⁻¹, the average runoff rate, sediment yield rate, and sediment-associated TN loss rate decreased linearly by 4.30%–16.13%, 9.82%–34.44%, and 14.54–46.42%, respectively. However, runoff-associated TN loss rate increased in a linear trend of 26.49%–137.59%. Similar trends were observed at rainfall intensities of 30 and 60 mm h⁻¹. When simulated using the KINEROS2 and nitrogen migration model embedded with mathematical relationships between wind velocity and soil erosion and TN loss on windward slopes, the NSE and R² of runoff, sediment, and TN loss processes were 0.49–0.83 and 0.59–0.89, 0.21–0.82 and 0.42–0.88, and 0.21–0.73 and 0.38–0.83, respectively. This study provides insights into the effects of WDR events on TN loss at plot scale and offers guidance for KINEROS2 application under WDR conditions at different slope directions and watershed scales. |
|---|---|
| Keywords | catenas ; nitrogen ; rain ; rain intensity ; runoff ; sediment yield ; sediments ; soil erosion models ; topographic slope ; total nitrogen ; water erosion ; watersheds ; wind speed ; Soil erosion ; Total nitrogen loss ; Windward slope ; Wind-driven rain ; KINEROS2 model |
| Language | English |
| Dates of publication | 2023-07 |
| Publishing place | Elsevier B.V. |
| Document type | Article ; Online |
| ZDB-ID | 519608-5 |
| ISSN | 1872-6887 ; 0008-7769 ; 0341-8162 |
| ISSN (online) | 1872-6887 ; 0008-7769 |
| ISSN | 0341-8162 |
| DOI | 10.1016/j.catena.2023.107146 |
| Database | NAL-Catalogue (AGRICOLA) |
Full text online
More links
Kategorien
In stock of ZB MED Bonn / Germany
| Z 3389: Show issues |
Order via subito
This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.
Inter-library loan at ZB MED
Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.