沙层特性对沙盖黄土坡面产流产沙变化贡献的定量分析

曹晓娟,谢林妤,张风宝,杨明义,李占斌

Quantifying the contributions of sand layer characteristic to variations of runoff and sediment yields from sand-covered loess slopes during simulated rainfall

CAO Xiaojuan,XIE Linyu,ZHANG Fengbao,YANG Mingyi,LI Zhanbin

表5 各因子对不同降雨阶段15 min产沙量影响的显著性及贡献率

Tab. 5 Significance and potential contributions of different factors to cumulative sediment yield of 15-min sub-rainfall during the rainfall

时间段(min)	沙层厚度(cm)		粒径组成(%)		交互作用		误差
时间段(min)	Sig	P_F	Sig	P_F	Sig	P_F	P_F
0~15	0.001^**	29.19	0.061	10.26	0.038^*	20.52	40.03
15~30	0.000^***	23.21	0.000^***	30.06	0.000^***	43.12	3.61
30~45	0.003^**	21.71	0.135	5.85	0.010^*	32.97	39.48
45~60	0.001^**	25.70	0.175	4.45	0.011^*	31.12	38.73
60~75	0.000^***	54.60	0.016^*	11.01	0.053	10.52	23.87
75~90	0.000^***	62.01	0.097	5.58	0.273	3.22	29.19