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[1]WU Wei,YAO Na,ZHAO Shuhua,et al.Characteristics of Nitrate Horizontal Transport in Soils from Different Land Uses in Danjiangkou Reservoir[J].Research of Soil and Water Conservation,2015,22(01):33-37,43.

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Characteristics of Nitrate Horizontal Transport in Soils from Different Land Uses in Danjiangkou Reservoir

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 22 Number of periods: 2015 01 Page number: 33-37,43 Column: Public date: 2015-02-28

Title:: Characteristics of Nitrate Horizontal Transport in Soils from Different Land Uses in Danjiangkou Reservoir

Author(s):: WU Wei¹, YAO Na¹, ZHAO Shuhua², GUO Zhonglu²; 1. Hubei Anyuan Safety and Environmental Protection Technology Co., Ltd., Wuhan 430040, China;
2. Research Center for Soil & Water Conservation, Huazhong Agricultural University, Wuhan 430070, China

Keywords:: nitrate; horizontal transport; land use; soil moisture; Danjiangkou Reservoir

CLC:: S153.6⁺1

DOI:: -

Abstract:: The horizontal transport of nitrate in soils from different land use along an altitudinal transect in Danjiangkou Reservoir was studied. The results were as follows. The horizontal transport velocity of nitrate decreased with increase of transport distance as power function. Due to soil properties from different land use, the curves of horizontal transport of nitrate were different; the horizontal transport velocity of nitrate from floodplain and citrus orchard was stable beyond 20 cm, and was stable beyond 35 cm for abandoned land in hydro-fluctuation belt and slope land in riparian buffer strips; the horizontal transport velocity of nitrate for abandoned land in hydro-fluctuation belt and slope land in riparian buffer strips decreased gradually with soil depth, and the opposite trend was observed for floodplain and citrus orchard. Transport concentration of nitrate reached to maximum value at the surface of wetting front which occurred on the interface between wet and dry soil; nitrate transport concentration decreased with increase of the soil moisture content and their relation could be fitted by power curve.

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