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Influences of Grass and Moss on Runoff and Sediment Yield on Sloped Loess Surfaces Under Simulated Rainfall by Chengzhong Pan; Zhouping Shangguan; Tingwu Lei is a Environmental Science article available to read on EtoBox.

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It is important to evaluate the impacts of grasses on soil erosion process so as to use them effectively to control soil and water losses on the Loess Plateau. Laboratory-simulated rainfall experiments were conducted to investigate the runoff and sediment processes on sloped loess surfaces with and without the aboveground parts of grasses and moss (GAM: grass and moss; NGAM: no grass and moss) under slope gradients of 5 °, 10 °, 15 °, 20 °, 25 °and 30 °. The results show that runoff from GAM and NGAM plots increased up to a slope gradient of 10 °and decreased thereafter, whereas the runoff coefficients increased with gradient. The average runoff rates and runoff coefficients of NGAM plots were less than those of GAM plots except for the 5 °slope. This behaviour may be due to the reduction in water infiltration under moss. The difference between GAM and NGAM plots in average runoff rates varied from 1Ð4 to 8%. At the same gradients, NGAM plots yielded significantly ( ̨D 0Ð05) more sediment than GAM plots. Average sediment deliveries for different slopes varied from 0Ð119 to 3Ð794 g m 2 min 1 from GAM plots, and from 0Ð765 to 16Ð128 g m 2 min 1 from NGAM plots. Sediment yields from G

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Author

Chengzhong Pan; Zhouping Shangguan; Tingwu Lei

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0885-6087)

Published

2006

Language

EN

Field

Environmental Science (Physical Sciences)