干旱半干旱区土壤水分对降水的脉动响应：以荒漠草原达茂旗为例

张存厚, 崔崴, 越昆, 赵杏花, 吴英杰, 森迪

Fluctuating response of soil moisture to precipitation in arid and semi-arid areas: a case study of Damao County in desert steppe

ZHANG Cunhou, CUI Wei, YUE Kun, ZHAO Xinghua, WU Yingjie, SEN Di

表3 研究区独立降水事件降水量与不同深度土壤相对湿度增量的关系

Tab.3 Relationship between precipitation of independent rainfall event and soil relative humidity increment at different depths in the study area

土壤层 构建模型 多项式 决定系数（R2） Pearson 相关系数（r） 样本量 0~10 cm y =-0.036x2 + 3.432 5x + 8.901 6 0.561 6 0.704** 61 >10~20 cm y = -0.0238x2 + 2.530 5x-9.600 9 0.506 4 0.681** 50 >20~30 cm y = 1.010 4x-6.339 9 0.628 9 0.794** 32 >30~40 cm y = 1.919 9x-16.315 0.789 3 0.888** 17 >40~50 cm y = 2.071 3x-24.565 0.781 8 0.884** 18