Prediction of sediment transport capacity based on slope gradients and flow discharge.

Sediment transport capacity (Tc) is an essential parameter in the establishment of the slope soil erosion model. Slope type is an important crucial factor affecting sediment transport capacity of overland flow, and vegetation can effectively inhibit soil loss. Two new formulae of sediment transport...

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Autores principales:	Kai Zhang, Wang Xuan, Bai Yikui, Xu Xiuquan
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/f84b153432ca47d0972366b58e4fda13
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spelling	oai:doaj.org-article:f84b153432ca47d0972366b58e4fda132021-12-02T20:08:29ZPrediction of sediment transport capacity based on slope gradients and flow discharge.1932-620310.1371/journal.pone.0256827https://doaj.org/article/f84b153432ca47d0972366b58e4fda132021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0256827https://doaj.org/toc/1932-6203Sediment transport capacity (Tc) is an essential parameter in the establishment of the slope soil erosion model. Slope type is an important crucial factor affecting sediment transport capacity of overland flow, and vegetation can effectively inhibit soil loss. Two new formulae of sediment transport capacity (Tc) are proposed of brown soil slope and vegetation slope in this study and evaluate the influence of slope gradient (S) and flow discharge (Q) on sediment transport capacity of different slope types. Laboratory experiments conducted using four flow discharges (0.35, 0.45, 0.55, and 0.65 L s-1), four slope gradients (3, 6, 9, and 12°), and two kinds of underlying surface (Brown soil slope, Vegetation slope). The soil particle size range is 0.05-0.5mm. The vegetation stems were 2mm in diameter and randomly arranged. The results show that the sediment transport capacity was positively correlated with the flow discharge and slope gradient. The vegetation slope's average sediment transport capacity is 11.80% higher than the brown soil slope that same discharge and slope gradient conditions. The sensitivity of sediment transport capacity to flow discharge on brown soil slope is higher than that of slope gradient. The sensitivity of sediment transport capacity of vegetation slope to slope gradient is more heightened than flow discharge. The sediment transport capacity was well predicted by discharge and slope gradient on brown soil slope (R2 = 0.982) and vegetation slope (R2 = 0.993). This method is helpful to promote the study of the sediment transport process on overland flow.Kai ZhangWang XuanBai YikuiXu XiuquanPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 9, p e0256827 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Kai Zhang Wang Xuan Bai Yikui Xu Xiuquan Prediction of sediment transport capacity based on slope gradients and flow discharge.
description	Sediment transport capacity (Tc) is an essential parameter in the establishment of the slope soil erosion model. Slope type is an important crucial factor affecting sediment transport capacity of overland flow, and vegetation can effectively inhibit soil loss. Two new formulae of sediment transport capacity (Tc) are proposed of brown soil slope and vegetation slope in this study and evaluate the influence of slope gradient (S) and flow discharge (Q) on sediment transport capacity of different slope types. Laboratory experiments conducted using four flow discharges (0.35, 0.45, 0.55, and 0.65 L s-1), four slope gradients (3, 6, 9, and 12°), and two kinds of underlying surface (Brown soil slope, Vegetation slope). The soil particle size range is 0.05-0.5mm. The vegetation stems were 2mm in diameter and randomly arranged. The results show that the sediment transport capacity was positively correlated with the flow discharge and slope gradient. The vegetation slope's average sediment transport capacity is 11.80% higher than the brown soil slope that same discharge and slope gradient conditions. The sensitivity of sediment transport capacity to flow discharge on brown soil slope is higher than that of slope gradient. The sensitivity of sediment transport capacity of vegetation slope to slope gradient is more heightened than flow discharge. The sediment transport capacity was well predicted by discharge and slope gradient on brown soil slope (R2 = 0.982) and vegetation slope (R2 = 0.993). This method is helpful to promote the study of the sediment transport process on overland flow.
format	article
author	Kai Zhang Wang Xuan Bai Yikui Xu Xiuquan
author_facet	Kai Zhang Wang Xuan Bai Yikui Xu Xiuquan
author_sort	Kai Zhang
title	Prediction of sediment transport capacity based on slope gradients and flow discharge.
title_short	Prediction of sediment transport capacity based on slope gradients and flow discharge.
title_full	Prediction of sediment transport capacity based on slope gradients and flow discharge.
title_fullStr	Prediction of sediment transport capacity based on slope gradients and flow discharge.
title_full_unstemmed	Prediction of sediment transport capacity based on slope gradients and flow discharge.
title_sort	prediction of sediment transport capacity based on slope gradients and flow discharge.
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/f84b153432ca47d0972366b58e4fda13
work_keys_str_mv	AT kaizhang predictionofsedimenttransportcapacitybasedonslopegradientsandflowdischarge AT wangxuan predictionofsedimenttransportcapacitybasedonslopegradientsandflowdischarge AT baiyikui predictionofsedimenttransportcapacitybasedonslopegradientsandflowdischarge AT xuxiuquan predictionofsedimenttransportcapacitybasedonslopegradientsandflowdischarge
_version_	1718375218093752320

Prediction of sediment transport capacity based on slope gradients and flow discharge.

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