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Journal of Arid Land  2017, Vol. 9 Issue (5): 790-796    DOI: 10.1007/s40333-017-0102-7
Orginal Article     
A new ecological control method for Pisha sandstone based on hydrophilic polyurethane
Zhishui LINAG1, Zhiren WU2, NOORI Mohammad3, Caiqian YANG1,*(), Wenyi YAO4
1 School of Civil Engineering, Southeast University, Nanjing 210096, China
2 School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
3 International Institute for Urban Systems Engineering, Southeast University, Nanjing 210096, China
4 Key Laboratory of Soil and Water Loess Process and Control on Loess Plateau of Ministry of Water Resource, Yellow River Institute of Hydraulic Research, Zhengzhou 450003, China
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The Pisha sandstone-coverd area is among the regions that suffer from the most severe water loss and soil erosion in China and is the main source of coarse sand for the Yellow River. This study demonstrated a new erosion control method using W-OH solution, a type of hydrophilic polyurethane, to prevent the Pisha sandstone from water erosion. We evaluated the comprehensive effects of W-OH on water erosion resistance and vegetation-growth promotion through simulated scouring tests and field demonstrations on the Ordos Plateau of China. The results of simulated scouring tests show that the water erosion resistance of W-OH treated area was excellent and the cumulative sediment yield reduction reached more than 99%. In the field demonstrations, the vegetation coverage reached approximately 95% in the consolidation-green area, and there was almost no shallow trenches on the entire slope in the treated area. In comparison, the control area experienced severe erosion with deep erosion gullies appeared on the slope and the vegetation coverage was less than 30%. This study illustrated that W-OH treatment can protect the Pisha sandstone from erosion and provide the vegetation seeds a chance to grow. Once the vegetation matured, the effects of consolidation-growth mutual promotion can efficiently and effectively improve the water erosion resistance and ecological restoration.

Key wordserosion resistance      field experiment      growth promotion      sediment yield     
Received: 08 May 2017      Published: 22 August 2017
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Cite this article:

Zhishui LINAG, Zhiren WU, NOORI Mohammad, Caiqian YANG, Wenyi YAO. A new ecological control method for Pisha sandstone based on hydrophilic polyurethane. Journal of Arid Land, 2017, 9(5): 790-796.

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