The Rangeland Journal The Rangeland Journal Society
Rangeland ecology and management

Runoff and Sediment Yield From a Semi-Arid Woodland in Eastern Australia. 1. The Effect of Pasture Type.

DJ Eldridge and J Rothon

The Rangeland Journal 14(1) 26 - 39
Published: 1992


Some hydrological characteristics of a red earth soil were examined under two pasture types at Yathong in central-westem New South Wales using simulated rainfall. Runoff and rate of sediment loss from plots dominated by perennial grasses were lower than for plots dominated by ephemerals. Time-to-ponding was less on the plots dominated by ephemerals but time-to-runoff was similar for both pasture types. On both grass and ephemeral-dominant soils, measured soil and vegetation attributes explained very little of the variation in runoff and sediment yield. The results do not support the existence of a threshold level of vegetation cover below which runoff increases markedly.

© ARS 1992

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