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Vol.55, No.1, PP.001-052
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1
Combining Electrical Data and Soil Hydraulic Properties to Evaluate the Stability of Shallow Landslides
55(1):01-13
Ya-Sin Yang[1] Hsin-Fu Yeh[2]* Chien-Chung Ke[1] Nai-Chin Chen[2]
* Corresponding Author. E-mail : hfyeh@mail.ncku.edu.tw
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2
Spreading Dynamics and Splatters of Mud Droplets Impinging on Horizontal and Inclined Surfaces
55(1):14-22
Kuan-Ling Huang[1] Hsien-Ter Chou[1*]
* Corresponding Author. E-mail : htchou@cc.ncu.edu.tw
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3
Assessing Deposition Patterns and Desiltation Strategies in Series Reservoirs of the Dajia River
55(1):23-31
Jin-Fu Li[1] Yen-Wen Chen[2] Su-Chin Chen[3]*
* Corresponding Author. E-mail : scchen@nchu.edu.tw
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4
Rill Evolution Processes and Sediment Yield Estimations of Clayey Soil
55(1):32-43
Chiu-Han Chen* Chia-Chun Wu
* Corresponding Author. E-mail : chen88312@gmail.com
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Rill Evolution Processes and Sediment Yield Estimations of Clayey Soil
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Chiu-Han Chen* Chia-Chun Wu

Abstract
Sandy silt or loam has been used in previous rill erosion research. Nevertheless, few studies have investigated rill development and erosion mechanics in clayey soil. The physical properties of clayey soil differ substantially
from those of other types of soils. Therefore, this study employed rainfall simulations to conduct experiments
on remolded clayey soil to investigate the effects of slope and volumetric soil water contents on rill evolution, headward retreat rate, and sediment yield. Additionally, this study utilized high-resolution laser topographic scanning to analyze sediment delivery ratios. An equation for estimating the unit-area rill erosion sediment yield of clayey soils was derived using multiple regression analysis.
Key Words: Rill evolution, clayey soil, headward retreat rate, volumetric soil water content, sediment delivery ratio.
Department of Soil and Water Conservation, National Pingtung University of Science and Technology, Pingtung, Taiwan
* Corresponding Author. E-mail : chen88312@gmail.com
Received: 2023/06/17
Revised: 2023/09/01
Accepted: 2023/10/02
5
Evaluating the Impact of Water Spreading on Vegetation Dynamics in Mansore and Sharife Wetlands Using Landsat Satellite Images in Khuzestan Province
55(1):44-52
Mehri Dinarvand[1]* Sajad Alimahmodi Sarab[2] Seyed Hosein Arami[1] Kohzad Heidari[2]
* Corresponding Author. E-mail : m.dinarvand@areeo.ac.ir
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