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Effects of nano carbon on soil erosion and nutrient loss in a semi-arid loess region of Northwestern China

International Journal of Agricultural and Biological Engineering 2018年第1期11卷 138-145页

作者： Beibei Zhou Xiaopeng Chen Quanjiu Wang Wei Wei Tiancheng Zhang State Key Laboratory of Eco-hydraulics in Northwest arid region of China(Xi’an University of Technology) Xi’an 710048ShaanxiChina State Key Laboratory of Soil Erosion and Dryland Farming on the loess Plateau Institute of Soil and Water ConservationChinese Academy of Science and Ministry of Water ResourcesYangling 712100ShaanxiChina School of Computer Science and Engineering Xi’an University of TechnologyXi’an 710048China Civil Engineering Department University of Nebraska-Lincoln at Omaha CampusOmahaNE 68182-0178USA

Since 2005,the application of nano carbon(NC)in agriculture and environmental remediation has received considerable attention with most of the research focusing on plant growth and heavy metal ***,little is known about the potential effects of NC on soil erosion and nutrient *** this study,rainfall simulation tests were conducted on a soil plot(1 m×1 m,located in a semi-arid loess region of northwestern China),in which a mixture(5-cm below the soil surface)of NC(0,0.1%,0.5%,0.7% and 1.0% on a mass base)and sandy soil(same as the one in the plot)was embedded as three bands(5 cm wide,1 m long and 5 cm thick)at the three positions(top,middle and bottom of the plot),*** the rainfall simulation test,a mixed solution of potassium bromide(1.0 mol/L KBr),potassium nitrate(1.0 mol/L KNO_(3)),monopotassium phosphate(1.0 mol/L KH_(2)PQ_(4))was sprayed on the soil *** showed that the sandy soil on the loess Plateau with 0.7%NC addition(36.47 kg/hm^(2) on a mass basis)could improve soil water runoff,sediment yield,and nutrient loss in the semi-arid loess region of northwestern China,in addition to preventing soil water from deep ***,NC may have a great potential in soil erosion control on the loess Plateau of China.

关键词： nano carbon soil erosion rainfall simulation tests runoff sediment nutrient loss semi-arid loess region

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