中国水土保持科学2025，Vol.23Issue(2)：138-147,10.DOI:10.16843/j.sswc.2024108
红黏土与风沙土复配对水分入渗特征的影响
Influence on the water infiltration characteristics of red clay and aeolian sandy soil compounding
摘要
Abstract
[Background]In the arid regions of northern China,the natural environment is characterized by poor conditions and significant ecological damage,resulting in a prevalence of land desertification and soil erosion.These conditions impede sustainable economic and social development.The combination of red clay and aeolian sandy enhances the soil's water absorption and retention properties,thereby reducing water loss from the aeolian sandy.However,there is a paucity of research addressing the soil improvement effects of red clay and aeolian sandy,especially in the Kubuqi Desert.In order to investigate the hydrological effect of red clay compounding aeolian sandy soil,providing a theoretical foundation for advancing the management of aeolian sandy soil.[Methods]In this study,red clay and aeolian sandy soil were mixed in accordance with a series of mass ratios,including 0∶1(completely aeolian sandy soil),1∶4,2∶3,3∶3,4∶1,and 1∶0(completely red clay).The infiltration rate of the soil was then determined through the utilization of the ring knife method,and the effects of integrating red clay with aeolian sandy soil on the water infiltration process were subsequently analyzed.This investigation involved a thorough examination of how the combination of these two soil types influences water infiltration dynamics.In addition,a detailed simulation of the infiltration process was performed.[Results]The content of clay in the compound soil increased significantly when the red clay added,ranging from 18.57 to 123.43 times the original value.Additionally,the range of particle size distribution expanded,enhancing the homogeneity of soil particle size and resulting in a finer soil texture.The saturated water holding rate,capillary water holding rate,water holding rate in the field increased gradually with the addition of red clay,and the capillary porosity of the compound soil was 1.10 to 1.21 times than that of the aeolian sandy soil,which enhanced water retention capabilities.As the proportion of red clay within the composite increased,both the initial infiltration rate and the average infiltration rate exhibited a gradual decline,the duration for soil to reach stable infiltration was extended.The infiltration capacity of the composite soil with a 1∶4 ratio was diminished significantly,leading to a substantial reduction in the movement of water into deeper soil layers.Water infiltration characteristics of red clay and aeolian sandy combining were more accurately represented by the Horton model(R2＞0.93).[Conclusions]In summary,a mixture of red clay and aeolian sandy soil in a 1∶4 ratio proves highly effective for soil improvement.关键词
红黏土/风沙土/复配土壤/土壤改良/土壤入渗特征/土壤入渗模型Key words
red clay soil/aeolian sandy soil/compound soil/soil improvement/soil infiltration characteristics/soil infiltration modeling分类
农业科学引用本文复制引用
郝斯然,蒙仲举..红黏土与风沙土复配对水分入渗特征的影响[J].中国水土保持科学,2025,23(2):138-147,10.基金项目
内蒙古自治区科技计划"水沙交汇处流沙入黄机制研究及其综合治理效果评价"(2022YFHH0076) （2022YFHH0076）
鄂尔多斯市重大科技攻关项目"光伏电场沙害防治综合技术研究"(2022EEDSKJZDZX020-4) （2022EEDSKJZDZX020-4）
新时代铸牢中华民族共同体意识下的内蒙古生态治理体系创新与发展(ZLJD24033) （ZLJD24033）
