Experiment on water and soil regulation method based on layered soil
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Abstract:
With?the?guidance?of?soil?physics?principles?and?the?utilization?of?fundamental?physical?properties?of?soil, a?technology?called?artificially?layered?soil?(ALS)?engineering?was?proposed?to?achieve?water?and?soil?regulation?by adjusting?the?soil?profile.?Experiments?of?laboratory?infiltration?ponding,?vegetation?evapotranspiration,?and?field soil ?moisture ?observation ?in ?arid ?areas ?were ?conducted ?to ?verify ?the ?effectiveness ?of ?ALS ?in ?water ?and ?soil regulation.?The?results?show?that?in?these?experiments,?by?adjusting?the?soil?profile?structure,?ALS?can?significantly improve?the?infiltration?capacity?of?the?soil,?with?the?initial?infiltration?rate?increasing?by?more?than?three?times?and the?average?infiltration?rate?increasing?by?67.57%.?Additionally,?the?cumulative?soil?infiltration?volume?increases?by 47.14%.?Meanwhile,?the?surface?soil?water?content?is?decreased?to?reduce?the?invalid?soil?evaporation?by?38.39%.?In the?field?experiments,?the?soil?water?content?in?the?layered?soil?is?mainly?stored?at?a?depth?of?31–50?cm?below?the surface,?while?that?of?the?undisturbed?field?soil?is?mainly?located?in?the?surface?soil.?Compared?with?the?undisturbed soil,?ALS?reduces?water?consumption?by?13.32%?and?decreases?the?water?consumption?rate?by?12.90%.?Therefore, ALS?engineering?can?realize?water?and?soil?regulation,?making?it?significant?for?water?and?soil?resource?management and?desertification?prevention?in?arid?regions.
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