root layer soil moisture content

soil layer with variable properties

a finite soil layer

Active soil layer

annular soil layer

Backfill soil layer

bare soil and soil with crop

calcareous soil with low concentration available P

Cavities in soil layer

coarse-grained soil with weak rock

Cohesive Soil with High Liquid Limit

compound wall with soil nails

conduit hidden by filling with soil

constitution of soil layer

Covered with soil

Covered with soil shallowly

Covering Film with Soil

covering soil layer inside levee

covering with soil