土壤含水率对风沙流结构及风蚀量的影响

陈银萍, 曹雯婕, 余沛东, 杨欢, 王旭洋, 李玉强

The effects of soil water content on sand flow structure and wind erosion amount with wind tunnel experiment in semi-arid area

Yinping Chen, Wenjie Cao, Peidong Yu, Huan Yang, Xuyang Wang, Yuqiang Li

表3 不同风速下含水率与输沙量的拟合关系

Table 3 Fitting relationship between water content and sediment transport amount at different wind speeds

类型 风速 /（m·s-1） 指数函数 三次函数 A B C R2 P D E F G R2 P 流动沙丘土 7 -0.5462 5.1831 0.8103 0.5494 <0.001 3.4674 -0.7118 -2.8433 1.0229 0.5451 <0.001 9 -1.0697 11.0133 0.7823 0.7526 <0.001 7.8165 -3.5574 -3.9731 1.6447 0.7986 <0.001 11 -1.1917 19.3885 0.6936 0.9211 <0.001 16.6209 -19.0136 6.1908 -0.4841 0.9328 <0.001 13 -1.5565 32.9572 0.6152 0.9091 <0.001 28.7479 -37.037 14.697 -1.7689 0.9184 <0.001 15 -1.7729 41.3245 0.5956 0.9207 <0.001 36.0581 -47.6441 19.7102 -2.5445 0.9284 <0.001 17 -0.1203 90.8630 0.3915 0.9778 <0.001 72.6161 -119.0454 64.2219 -11.3010 0.9511 <0.001 沙质草地土 7 0.019 1.1804 0.4794 0.9839 <0.001 1.1165 -1.5593 0.7098 -0.1024 0.9423 <0.001 9 -0.1223 4.0236 1.0128 0.8704 <0.001 3.8467 -3.3122 0.9393 -0.0865 0.8650 <0.001 11 -0.2703 6.9933 1.3621 0.926 <0.001 6.6512 -4.4931 1.0592 -0.085 0.9207 <0.001 13 -0.5172 10.4638 1.3888 0.9573 <0.001 9.8004 -6.4486 1.4407 -0.1078 0.9557 <0.001 15 -0.0042 20.3313 0.9664 0.9507 <0.001 19.6473 -16.2609 4.6382 -0.4392 0.9381 <0.001 17 -0.8425 30.7496 1.0701 0.9788 <0.001 29.2983 -23.4466 6.2424 -0.5440 0.9830 <0.001 农田土 7 -0.3128 0.5876 11.8667 0.5843 <0.001 0.2360 0.0304 -0.0246 0.0021 0.6578 <0.001 9 -0.2534 0.9783 6.4105 0.671 <0.001 0.6646 -0.0483 -0.0173 0.0015 0.698 <0.001 11 -0.3337 1.9572 5.6338 0.7163 <0.001 1.5461 -0.2108 -0.0066 0.0011 0.7281 <0.001 13 -0.2531 2.5535 4.7824 0.9217 <0.001 2.2278 -0.3981 0.0151 0.0002 0.9408 <0.001 15 -0.9835 7.4932 5.4066 0.8356 <0.001 6.2090 -0.8811 -0.0061 0.0027 0.8658 <0.001 17 -1.2146 11.5028 5.2745 0.8243 <0.001 10.0765 -1.6990 0.0632 0.0003 0.8418 <0.001