Information
Level 4 Data summaries and links to related documents and reports
Key findings
- Runoff was positively correlated with soil bulk density, fine sand % and slope %. Runoff was negatively correlated with dry matter, litter other than wood, dry matter + other litter, dry matter + wood, basal area %, and the course sand fraction of the soil.
- Plant tussock greatly decreased the number of runoff events;
- Runoff was greater in hard mulga and residue land zones than in the soft mulga zone; and
- Perennial grass basal area > 2% is considered essential to reduce the loss of surface soil and nutrients.
- Threshold values of runoff varied widely. Runoff was first noticed following 9.9 ± 1.1 mm of rain, but varied between 4.4 mm and 22.8 mm.
Key table and figures extracted from data, literature, and miscellaneous publication