Eco-Engineering Measures for the Sandy Side-Slope Protection of Newly Regulated Rivers in Humid Region

Shou Hua Cai; Xing Wei Zhou

doi:10.4028/www.scientific.net/AMR.831.293

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Eco-Engineering Measures for the Sandy Side-Slope Protection of Newly Regulated Rivers in Humid Region
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 831Eco-Engineering Measures for the Sandy Side-Slope...

Eco-Engineering Measures for the Sandy Side-Slope Protection of Newly Regulated Rivers in Humid Region

Abstract:

In humid region, the natural vegetation coverage has not restored well on the side-slope of the newly-regulated rivers before the first rainy season comes. The plants which are planted on the side-slope have also not grown enough roots to stabilize the side-slope. As a result, on the sandy side-slopes serious erosion and collapse often occurs. Thus, in order to safely ride out the first rainy season after regulation, this paper presents some ecological slope-protection measures to utilize annual ryegrass and willow branches. The experiments show that planting annual ryegrass on the sandy side-slope can effectively prevent the side-slope from eroding and safely ride out the first rainy season after regulation. Meanwhile, the restoration of native vegetation wont be hindered. If the sandy side-slope is steeper, i.e., its stability is poorer, besides planting annual ryegrass, planting willow branches-root hedges in the side-slope is also necessary. Planting willow branch-root hedges can improve the survival rate of willows and the closure of plant hedges, and thus significantly enhance the stability of sandy side-slope.