Use of dye infiltration experiments and HYDRUS-3D to interpret preferential flow in soil in a rubber-based agroforestry systems in Xishuangbanna, China

Jiang, Xiao; Chen, Chunfeng; Zhu, Xiai; Zakari, Sissou; Singh, Ashutosh Kumar; Zhang, Wanjun; Zeng, Huanhuan; Yuan, Zi‐Qiang; He, Chenggang; Shi, Yu; Liu, Wenjie

doi:10.1016/j.catena.2019.03.015

Cited by 56 publications

(25 citation statements)

References 62 publications

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“…In Tables 2-5, PY > CF > EF > SF > S > G indicates that the horizontal transport capacity of the preferential flow of plantations is good and lateral flow is developed. This condition may be related to the thin soil layer and the high probability of the rapid growth of the plantations, leading to the lateral growth of the root system and other reasons; this finding is similar to the conclusions of Noguchi et al (1999) [52] and Jiang et al (2019) [53]. A change in variation coefficients of maximum infiltration depths (Cµ) can reveal the spatial variation characteristics of water infiltration depth.…”

Section: Preferential Flow Characteristics Under Different Vegetation Characteristicssupporting

confidence: 74%

Response of Preferential Soil Flow to Different Infiltration Rates and Vegetation Types in the Karst Region of Southwest China

Kan

Cheng

Hou

2020

Water

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The widespread preferential flow phenomenon has an important impact on the water resource allocation of vegetation restoration in karst regions. In this study, four kinds of water infiltration experiments were conducted on six kinds of vegetation types (Pinus yunnanensis Franch. var. tenuifolia plantation forestlands, Eucalyptus robusta Smith plantation forestlands, Platycladus orientalis (L.) Francoptmxjjkmsc plantation forestlands, secondary forestlands, scrublands, and natural grasslands) separately to evaluate the effect of vegetation restoration on preferential flow in karst regions. The distribution of soil water infiltration was visualized via Brilliant Blue staining (290 images of soil vertical section staining) and data were processed via structural equation model (SEM). Results showed that 15–35 mm water accumulation was beneficial to the visualization of preferential flow. The experimental statement of a higher matrix flow in grassland than in plantations made it possible to draw conclusions of economic importance. Therefore, undergrowth of vegetation coverage in plantation forestlands should be increased. Experimentally analyzing the water-vegetation-soil interaction, shows an increase in vegetation coverage inhibits the development of matrix flow, an increase in soil erodibility may inhibit the development of preferential flow, and an increase in soil clay content may promote the deepening of matrix flow depth. The artificial forest can improve the soil structure and can effectively restore the degree of soil fragmentation; vegetation can be restored reasonably to prevent desertification in karst regions. Therefore, identifying and analyzing the structure characteristics of the soil macropore network under the conditions of natural vegetation communities and artificial vegetation communities in karst-geologic settings is an urgent study, which can provide a reference for improving the restoration measures of artificial forests and sustainable forestry development in karst desertification areas.

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Section: Preferential Flow Characteristics Under Different Vegetation Characteristicssupporting

confidence: 74%

Response of Preferential Soil Flow to Different Infiltration Rates and Vegetation Types in the Karst Region of Southwest China

Kan

Cheng

Hou

2020

Water

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“…Plant root systems, embedding, entangling and enwrapping in soil, have been shown to improve soil porosity and accelerate water infiltration (Jiang et al, 2019). In this study, the spatial distribution of Ks around the banana stem showed that Ks value near the stem was higher than that far away (Figure 4).…”

Section: Discussionmentioning

confidence: 99%

“…Plant roots play a crucial role in improving soil properties and water infiltration, due to their activity, including the living roots embedding, entangling, and enwrapping in soil (Ludwig et al, 2005; Niemeyer et al, 2014). For instance, Jiang et al (2019) found that the non‐capillary porosity near root zones was significantly greater than those in the non‐root zone. The channels formed by plant roots can support deeper water infiltration, accelerating the preferential flow process (Jiang et al, 2018; Wine et al, 2012), and promoting rapid solute transport at the same time (Jørgensen et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

Soil water movement differences relating to banana (Musa nana Lour.) plantation regime

Zhang

Zhu

et al. 2022

Land Degrad Dev

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The long-term cultivation of banana crops (Musa nana Lour.) has caused improper utilization of soil and water resources. However, the effect of the banana plantation regime on soil water flow pattern is still poorly understood. This study focused on the dominant pattern of soil water movement in the 1-year (B1) and 4-year (B2) old banana plantations. The results showed that: (1) the soil physical properties showed variability with soil depths, especially obvious changes from surface to 40 cm depth, which had restriction on soil infiltration in different depths. ( 2) The saturated hydraulic conductivity (Ks) decreased with the increasing distance from the banana stem.Moreover, the Ks in the B2 plot increased by 65.5% compared to the B1 plot at the soil layer 0-20 cm. (3) Preferential flow was the main path of soil water transport and was significantly influenced by soil bulk density, porosity, and root systems.Redundancy analysis (RDA) showed that banana root biomass was the most prominent factor influencing the dyed area. (4) The soil infiltrability and the preferential flow degree of both B1 and B2 plots were stronger in the root zone than those in the non-root zone. Such results were attributed to the root systems around the banana stem that were more developed than those far away from the stem (more accurately pseudostems); a large number of pore channels formed around the root systems that promoted the preferential flow. Or results suggest that banana root was the important factor affecting soil water movement. The improvement in the root network of banana plantation regime can result in better soil physical properties. This knowledge will be vital for the sustainable cultivation and irrigation of banana crops.

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“…Then the dyed area was further divided into two parts, the dye-stained concentrations of >2.0 g L À1 and 0-2.0 g L À1 , using a supervised classification based on the dye-staining intensity (Zhu et al, 2019). The concentrationof brilliant blue FCF could reflect the water flow paths and soil water content derived from dyed solution (Jiang et al, 2019). The dye-stained areas with a concentration higher than 2.0 g L À1 reflected the active water zone, which were dominated by preferential water flow.…”

Section: Dye Tracer Infiltration Experimentsmentioning

confidence: 99%

Effects of grazing exclusion on soil infiltrability and preferential flow in savannah livestock grazing systems

et al. 2022

Self Cite

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Although the establishment of grazing exclosures is often considered an important strategy of reducing soil degradation, their effect on hydrological functions is still poorly understood, particularly in dry‐hot savanna systems with heavy livestock grazing. In addition, the different roles played by the herb roots and the niche differentiation of woody plant roots induced by the grazing and exclosure in soil hydrological functions are still unclear. This study aimed to evaluate the effect of exclosure management on hydrological functions and services and assess the role of different functional vegetation types in improving these functions and services. The experiments were conducted in the continuous grazing areas and exclosure areas in a savanna ecosystem in Yuanjiang, southwest China. The root biomass of herb and woody plants, soil physical properties, water infiltration, and preferential water flow were measured in each study site. The results showed a significant improvement in soil physical properties with more termite holes, lower soil bulk density, and higher total and non‐capillary soil porosity in exclosure areas compared with grazing ones. As a result, the initial and average water infiltration, and preferential flow significantly increased by 132.76%, 185.31%, and 30.29%, respectively, in exclosure areas compared with the grazing ones. The results also showed that the exclosure significantly improved the soil surface water content by increasing the root biomass of herb and woody plants in the shallow soil layers. Herb plants probably improved water infiltration and insulated evaporation, while woody plants improved lateral preferential water flow paths and accelerated the water exchange between vertical and horizontal soil layers, thereby improving the water availability for different plants. This study demonstrated that the exclosure‐induced restoration and niche differentiation of herb and woody plants, coupled with improved soil structure in exclosures, could promote hydrological function and services and improve water management in savanna systems. Therefore, the grazing exclosures could be expanded periodically and cautiously to prevent soil degradation in the present savanna systems.

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Use of dye infiltration experiments and HYDRUS-3D to interpret preferential flow in soil in a rubber-based agroforestry systems in Xishuangbanna, China

Cited by 56 publications

References 62 publications

Response of Preferential Soil Flow to Different Infiltration Rates and Vegetation Types in the Karst Region of Southwest China

Response of Preferential Soil Flow to Different Infiltration Rates and Vegetation Types in the Karst Region of Southwest China

Soil water movement differences relating to banana (Musa nana Lour.) plantation regime

Effects of grazing exclusion on soil infiltrability and preferential flow in savannah livestock grazing systems

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