By Paul Truong, Tran Tan Van, Elise Pinners
The Vetiver method depends on a different tropical plant, Vetiver grass - "Chrysopogon zizanioides", that's confirmed and utilized in a few a hundred international locations for soil and water conservation, slope stabilization, land rehabilitation, pollutants keep an eye on, water caliber development, catastrophe mitigation and plenty of different environmental functions that could mitigate the influence of worldwide warming and weather switch. It has destiny capability for atmospheric carbon sequestration (carbon trade credit) and as bio-fuel for strength iteration and cellulosic ethanol. The Vetiver procedure is straightforward to exploit, budget friendly and if utilized effectively works! This handbook describes its most crucial makes use of and the know-how at the back of it. This moment variation of the guide has complete colour pictures and corrects a few mistakes within the first variation.
Read or Download Vetiver System Applications Technical Reference Manual: Second Edition (Color) PDF
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The Vetiver approach is dependent upon a special tropical plant, Vetiver grass - "Chrysopogon zizanioides", that's confirmed and utilized in a few a hundred international locations for soil and water conservation, slope stabilization, land rehabilitation, pollutants regulate, water caliber development, catastrophe mitigation and lots of different environmental functions which may mitigate the impression of world warming and weather switch.
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Additional resources for Vetiver System Applications Technical Reference Manual: Second Edition (Color)
Although rigid structures like rock embankments are obviously unsuitable for certain applications, such as sand dune stabilisation, they are still being built, as can be observed along the new road in central Vietnam. 6 Vegetative slope stabilisation Vegetation has been used as a natural bioengineering tool to reclaim land, control erosion and stabilize slopes for centuries, and its popularity has increased markedly in the last decades. This is partly due to the fact that more information about vegetation is now available to engineers, and also partly due to the cost-effectiveness and environment-friendliness of this “soft” engineering approach.
Note that vetiver certainly does not penetrate deeply into the groundwater table. Therefore at sites with a high groundwater level, its root system may not extend as long as in drier soil). Vetiver’s extensive, and thick root system binds the soil which makes it very difficult to dislodge, and extremely tolerant to drought. • As strong or stronger than those of many hardwood species, vetiver roots have very high tensile strength 24 PART 3 • • • • • • • that has been proven positive for root reinforcement in steep slopes.
Photo 13: Left: severely eroded bank of the Tra Khuc River, at Binh Thoi Commune; right: primitive sand bag protection. Photo 14: Left: Community members plant vetiver; right: November 2005: bank remains intact following the flood season. 3 VS application to control river bank erosion in the Mekong Delta With William Donner Foundation financial support and Paul Truong’s technical help, Le Viet Dung and his colleagues at Can Tho University initiated riverbank erosion control projects in the Mekong Delta.