数字农科院2.0

The Dynamics Characteristics of Soil Water Infiltration and Capillary Rise for Saline–Sodic Soil Mixed with Sediment

文献类型： 外文期刊

作者： Chitao Sun;Di Feng;Chao Yu;Jingsheng Sun;Xin Han;Mingming Zhang;Peng Zhang;Huifang Han;Weibing Mao;Xiaojun Shen

作者机构：

关键词： Dynamic model;Saline–sodic soil;Sediments;Water movement

期刊名称： Water (Switzerland)

ISSN： 2073-4441

年卷期： 2022 年 14 卷 3 期

页码：

收录情况： JCR（2021版） ; EI（2021版）

摘要： Yellow River sediment is the potential resource for saline–sodic soil reclamation. Experiments of one-dimensional soil columns were conducted to investigate the upward and downward soil water transportation characteristics for saline–sodic soil mixed with different sediment addition (0, 10, 20 kg/m2 in the top 20 cm layer). The saturated hydraulic conductivity, ratio of macroporosity, cumulative capillary adsorption and infiltration rate all increased with the increase in sediment ad-dition. No significant differences were detected for both the initial capillary rise rate and the initial infiltration rate for the upward and downward water transportation treatments, respectively. The average adsorption and infiltration rates showed an increasing trend with the increased sediment addition. The initial and average infiltration rates were higher than the initial capillary rise rate and average adsorption rates. The Philip model seems the optimal choice for the dynamic simulation of both upward and downward soil water transportation. The results may provide useful information for soil salinization amelioration.

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