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Solid Earth An interactive open-access journal of the European Geosciences Union

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doi:10.5194/se-2016-163
© Author(s) 2016. This work is distributed
under the Creative Commons Attribution 3.0 License.
Research article
07 Dec 2016
Review status
A revision of this discussion paper was accepted for the journal Solid Earth (SE).
Effects of wheat stubble on runoff, infiltration, and erosion of farmland in the Loess Plateau, China subjected to simulated rainfall
Linhua Wang1, Bo Ma1, and Faqi Wu1,2 1Institute of Soil and Water Conservation, Northwest A&F University, Yangling 712100, PR China
2College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, PR China
Abstract. Soil and water losses in agriculture are major environmental problems worldwide, especially on the Loess Plateau, China. Summer fallow management may help to control soil erosion and conserve water. This study investigated the effects of wheat stubble on runoff, infiltration, and soil loss in laboratory plots under simulated rainfall. The treatments comprised wheat stubble cover (WS) and traditional plowing (TP) in runoff plots (4.0 m × 1.0 m) with three slope gradients (5°, 10°, and 15°) under simulated rainfall at 80 mm h−1 for 1 h. The runoff volume from WS plots was significantly less than that from TP. The runoff reduction with WS ranged from 91.92–92.83 % compared with TP. The runoff rates varied with the runoff volume in the same manner. Under WS, sediment losses (2.41–3.78 g m−2) were reduced dramatically compared with TP (304.31–731.23 g m−2). The sediment concentration was also significantly lower with WS than TP. The infiltration amount was higher with WS (94.8–96.2 % of rainwater infiltrated) than TP (35.4–57.1 %). Thus, stubble cover can help to control erosion and conserve soil and water resources.

Citation: Wang, L., Ma, B., and Wu, F.: Effects of wheat stubble on runoff, infiltration, and erosion of farmland in the Loess Plateau, China subjected to simulated rainfall, Solid Earth Discuss., doi:10.5194/se-2016-163, in review, 2016.
Linhua Wang et al.
Linhua Wang et al.

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Short summary
Soil and water losses in agriculture is a major environmental problem on the Loess Plateau, China. This study investigated the effects of wheat stubble on soil erosion in laboratory plots under simulated rainfall. These results show that the traditional plow may induce more serious soil and water losses compared to wheat stubble cover. Wheat stubble cover delayed runoff generation time, decreased the runoff, sediment loss and increase rainwater infiltrate into the soil.
Soil and water losses in agriculture is a major environmental problem on the Loess Plateau,...
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