Glossary - Afforestation, Reforestation and Forest Restoration in Arid and Semi-arid Tropics - page 279

Watershed approach An approach of treating a large tract of land by dividing it
into watersheds based on drainage lines and proceeding to comprehensively treat
one watershed before going to another.

Watershed recharge Amount of precipitation that percolates into the soils of the
watershed and then appears as subsurface water in springs and wells.

Weak coppicer A tree species that coppices sparsely.

Weeding Removal of weeds, that is, the unwanted plants that interfere with, or
compete for nutrition and moisture with, the plants desired to be grown.

Weep holes In water-impounding structures, especially masonry stopdams, holes
running through the body of the structure to drain off water and to ease water pressure
in it.

White alkali ⇒ Saline soil

Wilding A seedling growing uncultivated in the wild as a native.

Wing wall In an earthen embankment or a weir, either of the walls on the sides of
the headwall to contain flow of water within a given width in order to prevent damage
to the structure by erosion.
Xerophytic plants Plants structurally adapted for growth with limited water supply,
especially the plants naturally occurring in an arid place.