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Gish, T. J.; Giménez, Daniel; Rawls, W. J.

doi:10.1023/a:1004202013082

Cited by 33 publications

(3 citation statements)

References 34 publications

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“…In NT plots, root channels functioned as continuous macropores which connected the soil surface to the subsoil, while in MP plots, these continuous macro-pores were disrupted and the pathways for water infiltration were reduced (Larsbo et al, 2009). In an infiltration study by using dye-stained technique, Gish et al (1998) found greater deethylatrazine concentrations in deeper soil of NT soil compared with tilled soils due to the formation of stable root channels. Capowiez et al (2009) found that the higher abundance of the ecological type of earthworms in soils under reduced tillage was associated with large macro-pores and thus might enhance infiltration compared with that in MP soil.…”

Section: Discussionmentioning

confidence: 95%

Effects of tillage management on infiltration and preferential flow in a black soil, Northeast China

et al. 2013

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The impacts of no-tillage (NT) and moldboard plough (MP) managements on infiltration rate and preferential flow were characterized using a combined technique of double-ring device and dye tracer on a black soil (Mollisols) in Northeast China. The objective of this study is to evaluate how tillage practices enhance soil water infiltration and preferential flow in favor of soil erosion control in the study area. The steady infiltration rates under NT management are 1.6 and 2.1 times as high as those under MP management in the 6th and 8th years of the tillage management in place, while the infiltrated water amounts under NT management are 1.4 and 2.0 times as high as those under MP management, respectively. The depth of methylene blue penetrated into NT soil increases from 43 cm in the 6th year to 57 cm in the 8th year, which are 16 cm and 19 cm deeper than those in MP soil, respectively. The results of morphologic image show that more biological macro-pores occur in NT soil than in MP soil. These macro-pores play a key role in enhancing preferential flow in NT soil, which in turn promotes water infiltration through preferential pathways in NT soil. The results are helpful to policy-making in popularizing NT and have the implications for tillage management in regard to soil erosion control in black soil region of China.

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Section: Discussionmentioning

confidence: 95%

Effects of tillage management on infiltration and preferential flow in a black soil, Northeast China

et al. 2013

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“…Specific types of water flow are responsible for infiltration in the vadose zone, including matrix flow and preferential flow (Wilcox et al, 2006(Wilcox et al, , 2008Williams, 2008). Matrix flow is the slow movement of water through bulk soil (Allaire, Roulier, & Cessna, 2009), and preferential flow is nonuniform water flow that allows water to rapidly flow through soil layers without penetrating the fine porous matrix (Abrahams & Parsons, 1991;Bergkamp, 1998;Cantón et al, 2011;Cerdà, 1997;Edwards, Shipitalo, Owens, & Norton, 1989;Edwards, Shipitalo, Owens, & Dick, 1993;Ruiz Sinoga & Martinez Murillo, 2009), thus reducing the travel time of water from the surface to groundwater more than would be expected from the soil matrix properties (de Rooij, 2000;Gish, Gimenes, & Rawls, 1998;Gish & Jury, 1983;Jamieson, Gordon, Sharples, Stratton, & Madani, 2002). In particular, secondary preferential flow paths formed in shallow surfaces are responsible for the locally high hydraulic conductivity of the clay-rich soils found in karst areas (Ford & Williams, 2007;Sohrt, Ries, Sauter, & Lange, 2014).…”

Section: Vadose Zone Journalmentioning

confidence: 99%

Rock outcrops change infiltrability and water flow behavior in a karst soil

Zhao

Shen

Jiang

et al. 2020

Vadose Zone Journal

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Rock outcrops are widespread across the surface of the earth, particularly in karst environments, and they play an important role in infiltration-runoff processes by triggering preferential flow. However, the characteristics of the preferential flow network at the soil-rock interface and its influencing factors in karst areas remain poorly understood. To clarify how the emergence of outcrops on the land surface affects soil infiltrability and water flow behavior, soil hydraulic conductivity (K) measurements and dye tracing experiments were conducted in a karst area with two contrasting surface features (i.e., rock outcrop plot [RP] and non-rock-outcrop plot [NRP]) in Yunnan Province, Southwest China. Results showed that (i) in the immediate vicinity of rock outcrops in the RP, K values were significantly increased, and other soil properties and plants were also improved when compared with results 1 m away from outcrops and in the NRP; and (ii) in the RP, the soil-rock interface dominated the preferential flow network surrounding outcrops, and the connected conduits produced by plant roots and soil fauna were also involved in this infiltration process. Matrix flow was the dominant flow behavior in the NRP. We concluded that rock outcrops, by improving soil properties and building a well-connected preferential flow network, can greatly change infiltrability and water flow behavior in karst soil. This implied that outcrops will facilitate quick infiltration after most rainfall events and thus reduce rain-induced surface runoff and soil erosion, as well as increasing groundwater recharge and the water supply to nearby plants.

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“…In contrast, soils with macropores associated with desiccation cracks, fissures, and animal burrows (Beven & Germann, 1982;Clothier, Green, & Deurer, 2008;van Schaik, Palm, Klaus, Zehe, & Schröder, 2014) move water and solutes quickly through the soil profile to tile drains (Williams et al, 2016). Macropore flow of water and dissolved nutrients is highly dependent on the presence of vegetation on the landscape (Clothier & Green, 1997;Gish, Gimenez, & Rawls, 1998), which can increase water infiltration facilitated by roots (Beven & Germann, 1982;Gish et al, 1998). However, it has also been shown that belowground root biomass can enhance matrix flow through increased soil aggregation and water holding capacity (Basche & DeLonge, 2017;Six, Bossuyt, Degryze, & Denef, 2004).…”

Section: Introductionmentioning

confidence: 99%