Stabilizing Mobile Dune and Fixing Sand Shifts

INNOVATIVE TECHNOLOGIES AND SOLUTIONS

TKWB

Technique: FORMATION OF PROTECTIVE DUNES
Title: Stabilizing Mobile Dune and Fixing Sand Shifts

Description of the innovative solution

Artificial plantations of trees, shrubs and grasses are the most effective measures to stabilize mobile dunes and fix shifting sands in arid, semi-arid regions where the annual precipitation varies from 200 to 400 mm. Both seedling and seeding methods are available. The methods used in plantation for fixing sands include:

(1) Plantations of trees, shrubs and grasses in the inter-dune and low-lying lands;

(2) Shrubs that have a high resistance to wind erosion are planted on the front or middle part of the windward slopes of dune;

(3) Cuttings of species are drought-resistant to sandy soil, such as Salix spp., Artemisia spp., Caligunuim spp. are planted in the leeward slopes of sand dunes to fix the sand surface of dunes. This plantation is characterized by non-irrigation, quick growth with production of fodder for livestock.

There also has been experience in managing sand dunes along both sides of transport lines of railway and highway so as to protect railroad beds from wind erosion and sand accumulation. This action will guarantee the safe operation of transportation system.

Advantages and sustainability

Stabilizing dunes and fixing sand shifts provide habitat for highly specialized plants and animals, including rare and endangered species, and protect beaches from erosion and recruit sand to eroded beaches