Page 28 - GRIHA Manual Volume II - Introduction to National Rating System
P. 28
20 GrIha Manual: Volume 2
• They are used for reducing run-of velocity, increasing the distance of overland run-of low.
They are also used to hold moisture and minimize sediment loading of surface run-off.
# Mulching
• Mulch is a protective layer of material that is spread on the top of the soil, which can either
be organic (such as grass clippings, straw, bark chips, and similar materials) or inorganic,
(such as stones and brick chips).
• Mulching should be used with seedings and plantings on steep slopes (slopes>33%). Steep
slopes are prone to heavy erosion and, therefore, netting or anchoring should be used to
hold it in place.
# Topsoil improvement
• Topsoil needs to be tested before preservation to ensure that it is worth preserving, and will
help conserve resources and money in the long run.
• In some cases, topsoil may not be as fertile as is required for sound landscape applications.
In such a case, adequate measures need to be adopted to ensure that the fertility of the soil
is restored to a usable level.
Figure 7 Topsoil stored and mulched with grass and pebbles at a GRIHA registered project site in Dehradun
• They are used for reducing run-of velocity, increasing the distance of overland run-of low.
They are also used to hold moisture and minimize sediment loading of surface run-off.
# Mulching
• Mulch is a protective layer of material that is spread on the top of the soil, which can either
be organic (such as grass clippings, straw, bark chips, and similar materials) or inorganic,
(such as stones and brick chips).
• Mulching should be used with seedings and plantings on steep slopes (slopes>33%). Steep
slopes are prone to heavy erosion and, therefore, netting or anchoring should be used to
hold it in place.
# Topsoil improvement
• Topsoil needs to be tested before preservation to ensure that it is worth preserving, and will
help conserve resources and money in the long run.
• In some cases, topsoil may not be as fertile as is required for sound landscape applications.
In such a case, adequate measures need to be adopted to ensure that the fertility of the soil
is restored to a usable level.
Figure 7 Topsoil stored and mulched with grass and pebbles at a GRIHA registered project site in Dehradun
