Impacts of the soil pore structure on infiltration characteristics at the profile scale in the red soil region

Ju, Xinni; Gao, Lei; She, Dongli; Jia, Yuhua; Pang, Zhe; Wang, Yaji

doi:10.1016/j.still.2023.105922

Cited by 17 publications

(5 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As natural evaporation continues after the rainfall, the potential energy of soil water in the upper layer decreases. Consequently, soil water starts to move slowly upwards in the form of capillary water, primarily influenced by the soil matrix potential [19]. As time passes after rainfall, the rate of water migration in the soil gradually slows down and the soil water content tends to stabilize.…”

Section: The Law Of Total Variation In Slope Soil Water Under Natural...mentioning

confidence: 99%

Experimental Study of the Soil Water Dissipation Law of Vegetated Slopes under Natural Evaporation Conditions

Xiao,

Liu,

Wan

et al. 2024

Applied Sciences

View full text Add to dashboard Cite

Under the combined action of soil evaporation and vegetation transpiration, the law of soil water dissipation at different depths of vegetated slopes is unknown and the related influencing factors are unclear. In this paper, six large-scale slope models were constructed for long-term dynamic monitoring of soil water. The effects of slope ratio and vegetation on the dynamic changes in soil water at different depths were analyzed. Pearson correlation analysis was used to analyze the relationship between slope conditions, meteorological factors, and soil water dissipation. The results show that under the condition of natural evaporation, slope ratio has little effect on the dynamic change in soil water in bare slopes. However, the greater the slope ratio of vegetated slopes, the faster the soil water decreases in the 40 cm depth range. Additionally, soil water dissipation follows a logarithmic functional relationship with evaporation time in both bare and vegetated slopes. The correlation between slope conditions and soil water dissipation is stronger than that of meteorological factors. The research results can provide some theoretical support for exploring the hydrological effects of vegetated slopes.

show abstract

Section: The Law Of Total Variation In Slope Soil Water Under Natural...mentioning

confidence: 99%

Experimental Study of the Soil Water Dissipation Law of Vegetated Slopes under Natural Evaporation Conditions

Xiao,

Liu,

Wan

et al. 2024

Applied Sciences

View full text Add to dashboard Cite

show abstract

“…In the low suction section (0-750 cm), the curves were steep, indicating a sharp decrease in soil water content with increasing suction. Soil drain age mainly occurs in large pores, and soil water release is easy [37,38]. In the middle to high suction range (750-14,000 cm), the curve changes smoothly, and the soil water con tent slowly decreases and tends to stabilize with the increase in suction.…”

Section: Soil Hydraulic Characteristic Parametersmentioning

confidence: 99%

Influence of Long-Term Mulched Drip Irrigation on Upward Capillary Water Movement Characteristics in the Saline–Sodic Region of Northwest China

Chen,

Zhang,

Wang

et al. 2024

Agronomy

View full text Add to dashboard Cite

Capillary water, serving as a crucial intermediary between groundwater and crop root layer moisture, is important for both soil retention and crop utilization. To investigate the effect of mulched drip irrigation (MDI) on upward capillary water in cotton fields with different application years (0, 10, 14, 18, 20, and 24 years) in the saline–sodic region of Northwest China, an indoor soil column test (one-dimensional capillary water rise experiment) was conducted. The results showed that the wetting front transport law, capillary water recharge, and wetting front transport rate over time exhibited an increasing trend in the early stages of MDI application (10 and 14 years), peaking at 18 years of application, followed by a decreasing trend. The relationship between the capillary water recharge and rising height was fitted based on the Green–Ampt model, and their slopes reveal that 14 and 18 years of MDI application required the largest amount of water per unit distance, indicating an excellent water-holding capacity beneficial for plant growth. Conversely, 0 years required the smallest amount of water per unit distance. Based on the movement characteristics of upper capillary water, we confirmed that the MDI application years (0–18 years) improves soil infiltration capacity, while the long-term application years (18–24 years) reduces groundwater replenishment to the soil. Furthermore, the HYDRUS-1D model was employed to simulate the capillary water rise process and soil moisture distribution under different MDl application years. The results showed an excellent consistency with the soil column experiments, confirming the accuracy of HYDRUS-1D in simulating the capillary water dynamics in saline–sodic areas. The results would provide suggestions to achieve the sustainable development of long-term drip-irrigated cotton fields.

show abstract

“…The mean diameter (MD) of macropores was determined using the local thickness algorithm in the Bone-J plugin of ImageJ. This algorithm defines thickness as the diameter of the largest sphere at a specific point within the three-dimensional pore body [49]. MD was calculated using the following equation:…”

Section: Quantification Of Soil Pore Characteristicsmentioning

confidence: 99%

Soil Biopores and Non-Biopores Responses to Different Tillage Treatments in Sugarcane Fields in Guangxi, China

Wang,

Gan,

Zhang

et al. 2024

Agronomy

View full text Add to dashboard Cite

Different types of soil macropores respond differently to various tillage practices, owing to disparities in origin, scale, morphology, and function, consequently exerting distinct effects on soil structure. This study aimed to investigate the response mechanisms of three different soil pore types (total macropores, non-biopores, and biopores) to two distinct tillage practices: smash-ridging tillage (T) and no-tillage (NT) in sugarcane fields. The parameters characterizing soil pore treatments in two and three dimensions were obtained using X-ray computed tomography scanning technology. ImageJ and MATLAB software were employed to analyze the data and separate soil macropores into biopores and non-biopores categories. The results showed that non-biopores predominated in two-dimensional cross-sectional areas in NT treatment, whereas biopores were more dominant in T treatment. Biopores in T treatment had a higher proportion of two-dimensional pores compared to NT treatment. A three-dimensional analysis indicated that total macropores had larger mean diameters (MD) and macroporosity, with more continuous tubular pores in T treatment than that in NT treatment. However, NT treatment had more numerous non-biopores with broader spatial distribution and complex morphology. Additionally, biopores in T treatment had larger MD and branching length density (LD). These vertically developed biopores, along with high macropore connectivity and under smash-ridging tillage, could improve soil water and pore conductivity. Therefore, smash-ridging tillage was more beneficial for sugarcane growth compared to no-tillage in Guangxi of China.

show abstract

Impacts of the soil pore structure on infiltration characteristics at the profile scale in the red soil region

Cited by 17 publications

References 50 publications

Experimental Study of the Soil Water Dissipation Law of Vegetated Slopes under Natural Evaporation Conditions

Experimental Study of the Soil Water Dissipation Law of Vegetated Slopes under Natural Evaporation Conditions

Influence of Long-Term Mulched Drip Irrigation on Upward Capillary Water Movement Characteristics in the Saline–Sodic Region of Northwest China

Soil Biopores and Non-Biopores Responses to Different Tillage Treatments in Sugarcane Fields in Guangxi, China

Contact Info

Product

Resources

About