In: Journal of Hydrology and Hydromechanics, vol. 62, no. 4
Guanhua Zhang - Guobin Liu - Liang Yi - Pingcang Zhang
Details:
Year, pages: 2014, 334 - 342
Keywords:
Overland flow; Darcy-Weisbach friction coefficient; Patch pattern; Vegetation structure; Simulated rainfall;
Loess Plateau.
Original source URL: http://www.ih.savba.sk/jhh
About article:
In this paper simulated rainfall experiments in laboratory were conducted to quantify the effects of patchy
distributed Artemisia capillaris on spatial and temporal variations of the Darcy-Weisbach friction coefficient (f).
Different intensities of 60, 90, 120, and 150 mm h–1 were applied on a bare plot (CK) and four different patched patterns:
a checkerboard pattern (CP), a banded pattern perpendicular to slope direction (BP), a single long strip parallel to slope
direction (LP), and a pattern with small patches distributed like the letter ‘X’ (XP). Each plot underwent two sets of
experiments, intact plant and root plots (the above-ground parts were removed). Results showed that mean f for A.
capillaris patterned treatments was 1.25–13.0 times of that for CK. BP, CP, and XP performed more effectively than LP
in increasing hydraulic roughness. The removal of grass shoots significantly reduced f. A negative relationship was
found between mean f for the bare plot and rainfall intensity, whereas for grass patterned plots fr (mean f in patterned
plots divided by that for CK) increased exponentially with rainfall intensity. The f –Re relation was best fitted by a power
function. Soil erosion rate can be well described using f by a power-law relationship.
How to cite:
ISO 690:
Zhang, G., Liu, G., Yi, L., Zhang, P. 2014. Effects of patterned Artemisia capillaris on overland flow resistance under
varied rainfall intensities in the Loess Plateau of China. In Journal of Hydrology and Hydromechanics, vol. 62, no.4, pp. 334-342. 0042-790X (until 2019) .
APA:
Zhang, G., Liu, G., Yi, L., Zhang, P. (2014). Effects of patterned Artemisia capillaris on overland flow resistance under
varied rainfall intensities in the Loess Plateau of China. Journal of Hydrology and Hydromechanics, 62(4), 334-342. 0042-790X (until 2019) .