Modeling aeolian sand flux over farmland for different time scales

doi:10.7522/j.issn.1000-694X.2020.00052

Journal of Desert Research ›› 2020, Vol. 40 ›› Issue (5): 81-88.DOI: 10.7522/j.issn.1000-694X.2020.00052

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Modeling aeolian sand flux over farmland for different time scales

Yapeng Huang¹(), Zhongling Guo¹(), Chunping Chang¹, Rende Wang², Jifeng Li¹, Qing Li²

^1.College of Resource and Environment Sciences，Hebei Normal University，Shijiazhuang 050024，China
^2.Institute of Geographical Sciences，Hebei Academy of Sciences，Shijiazhuang 050021，China

Received:2020-04-09 Revised:2020-05-22 Online:2020-09-28 Published:2020-09-28
Contact: Zhongling Guo

Abstract

Abstract:

Most aeolian sand transport models have empirical parameters which can account for the erodibility of the soil. In this paper， the transport rates predicted using four models by Bagnold （1937）， Kawamura （1951）， Zingg et al （1953） and Lettau et al （1978） were compared based on the observed data with different time scales at two typical sites in 2017 and 2018 in Kangbao County， Hebei Province， China. The results revealed that the predicted values of the four models were generally related to the observed transport rates. The relationship between the observed sand transport rates and friction wind velocity followed an exponential function. The new parameters of the four models were determined by calibrating the four models with observed data. It revealed that the empirical parameters of the models changed with time scales. More studies related to the parameters of aeolian sand transport models are required.

Key words: aeolian sand transport, time scale, aeolian sand flux model, wind erosion

CLC Number:

X169

Yapeng Huang, Zhongling Guo, Chunping Chang, Rende Wang, Jifeng Li, Qing Li. Modeling aeolian sand flux over farmland for different time scales[J]. Journal of Desert Research, 2020, 40(5): 81-88.

Figures/Tables 5

References 27

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土壤性质	地点1	地点2
黏土/%	3.43	3.81
沙土/%	78.12	76.87
土壤含水率/%	1.31	1.53
有机质/%	3.52	1.58
碳酸盐/%	2.14	6.51
可蚀部分(<0.84 mm 干团聚体)/%	80.26	78.28
砾石含量/%	5.17	6.56

土壤性质	地点1	地点2
黏土/%	3.43	3.81
沙土/%	78.12	76.87
土壤含水率/%	1.31	1.53
有机质/%	3.52	1.58
碳酸盐/%	2.14	6.51
可蚀部分(<0.84 mm 干团聚体)/%	80.26	78.28
砾石含量/%	5.17	6.56

时间尺度	方程	地点1		地点2
时间尺度	方程	R²	NSC值	R²	NSC值
10 min	Bagnold方程	0.65	0.39	0.60	-3.44
	Kawamura方程	0.13	-2.12	0.59	-20.77
	Zingg方程	0.65	-0.28	0.60	0.18
	Lettau方程	0.65	-0.34	0.61	-8.39
15 min	Bagnold方程	0.46	0.29	0.71	-1.69
	Kawamura方程	0.47	-2.51	0.71	-14.53
	Zingg方程	0.47	-0.29	0.71	0.29
	Lettau方程	0.47	-0.57	0.72	-5.13
20 min	Bagnold方程	0.59	0.34	0.59	-4.98
	Kawamura方程	0.60	-2.53	0.61	-30.11
	Zingg方程	0.59	-0.37	0.62	0.15
	Lettau方程	0.59	-0.48	0.62	-12.04
25 min	Bagnold方程	0.51	0.12	0.86	-2.92
	Kawamura方程	0.64	-2.74	0.85	-19.02
	Zingg方程	0.12	-0.29	0.86	0.24
	Lettau方程	0.40	-0.23	0.85	-7.33
30 min	Bagnold方程	0.76	0.41	0.57	-3.94
	Kawamura方程	0.75	-2.24	0.56	-23.87
	Zingg方程	0.76	-0.34	0.57	0.16
	Lettau方程	0.76	-0.29	0.58	-9.31

时间尺度	方程	地点1		地点2
时间尺度	方程	R²	NSC值	R²	NSC值
10 min	Bagnold方程	0.65	0.39	0.60	-3.44
	Kawamura方程	0.13	-2.12	0.59	-20.77
	Zingg方程	0.65	-0.28	0.60	0.18
	Lettau方程	0.65	-0.34	0.61	-8.39
15 min	Bagnold方程	0.46	0.29	0.71	-1.69
	Kawamura方程	0.47	-2.51	0.71	-14.53
	Zingg方程	0.47	-0.29	0.71	0.29
	Lettau方程	0.47	-0.57	0.72	-5.13
20 min	Bagnold方程	0.59	0.34	0.59	-4.98
	Kawamura方程	0.60	-2.53	0.61	-30.11
	Zingg方程	0.59	-0.37	0.62	0.15
	Lettau方程	0.59	-0.48	0.62	-12.04
25 min	Bagnold方程	0.51	0.12	0.86	-2.92
	Kawamura方程	0.64	-2.74	0.85	-19.02
	Zingg方程	0.12	-0.29	0.86	0.24
	Lettau方程	0.40	-0.23	0.85	-7.33
30 min	Bagnold方程	0.76	0.41	0.57	-3.94
	Kawamura方程	0.75	-2.24	0.56	-23.87
	Zingg方程	0.76	-0.34	0.57	0.16
	Lettau方程	0.76	-0.29	0.58	-9.31

时间尺度	方程	地点1的a值	地点2的a值
10 min	Bagnold方程	4.42	2.40
	Kawamura方程	11.20	1.86
	Zingg方程	4.55	2.47
	Lettau方程	5.97	3.39
15 min	Bagnold方程	3.68	3.47
	Kawamura方程	9.27	2.65
	Zingg方程	3.79	3.56
	Lettau方程	4.93	4.90
20 min	Bagnold方程	4.50	2.83
	Kawamura方程	11.22	2.18
	Zingg方程	4.62	2.91
	Lettau方程	6.05	4.01
25 min	Bagnold方程	5.02	3.69
	Kawamura方程	12.54	2.86
	Zingg方程	5.16	3.80
	Lettau方程	6.75	1.20
30 min	Bagnold方程	5.18	2.84
	Kawamura方程	12.84	2.18
	Zingg方程	5.32	2.91
	Lettau方程	6.95	4.02

Modeling aeolian sand flux over farmland for different time scales

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