2019
DOI: 10.4236/jgis.2019.115029
|View full text |Cite
|
Sign up to set email alerts
|

Effect of Slope Gradient on Erosion Evolution Process at Microtopographic Tillage Soil Surfaces

Abstract: Slope gradient is one of the critically important factors which drive the erosional response of microtopographic surfaces. This study investigates the effect of slope gradient on the evolution of erosion under accumulative rainfall in laboratory experiments and calculates critical slope values that help evaluate land suitability for farming and similar purposes. Dynamics of accumulative runoff, accumulated sediment and their rates in each erosion stage are studied when the slope gradient varies. The critical s… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
1
1
1

Citation Types

0
2
0

Year Published

2023
2023
2024
2024

Publication Types

Select...
5
1

Relationship

0
6

Authors

Journals

citations
Cited by 6 publications
(3 citation statements)
references
References 21 publications
0
2
0
Order By: Relevance
“…Higher magnitude of soil losses on steeper slopes than the 2% was the effect of gravity on runoff velocity, as gravity has been reported to enhance runoff velocities and soil losses on steeper slopes than gentle slopes (Khan et al, 2016;Singh, 2018;Jourgholami et al, 2021). Other studies have had varied results on the effect of slope steepness on soil erosion and soil loss (Defersha et al, 2011;Siswanto and Sule, 2019;Zheng et al, 2019), however, conclusions drawn from them indicate that effective slope steepness that presents a positive linear relationship between slope and soil loss ranges from 8 -25%. Beyond this range, the relationship varies depending on soil quality parameter, rainfall intensity and plant density among others.…”
Section: Resultsmentioning
confidence: 98%
“…Higher magnitude of soil losses on steeper slopes than the 2% was the effect of gravity on runoff velocity, as gravity has been reported to enhance runoff velocities and soil losses on steeper slopes than gentle slopes (Khan et al, 2016;Singh, 2018;Jourgholami et al, 2021). Other studies have had varied results on the effect of slope steepness on soil erosion and soil loss (Defersha et al, 2011;Siswanto and Sule, 2019;Zheng et al, 2019), however, conclusions drawn from them indicate that effective slope steepness that presents a positive linear relationship between slope and soil loss ranges from 8 -25%. Beyond this range, the relationship varies depending on soil quality parameter, rainfall intensity and plant density among others.…”
Section: Resultsmentioning
confidence: 98%
“…The steep slopes also happen to increase the cumulative surface runoff as compared to the gentle slopes and flat areas (Wang et al, 2023). The surface runoff thus detaches soil particles and carries them more easily on steep slopes than on gentle slopes (Zheng et al, 2019;Wang et al, 2023).…”
Section: Discussionmentioning
confidence: 99%
“…Wen et al [ 19 ] analyzed various soil erosion control measures adopted in different periods, and the balance of water and soil conservation was evaluated. Based on the laboratory inflow experiment, Zheng et al [ 20 ] studied the effect of slope gradient on soil erosion under continuous rainfall conditions and derived the critical value of the slope gradient. Qian et al [ 21 ] obtained linear relationships between different combinations of Re, flow velocity, stream power, and sediment yield in a simulated rainfall experiment on eroded slopes.…”
Section: Introductionmentioning
confidence: 99%