Rainfall and Vegetation Effects on Temporal Variation of Topographic Thresholds for Gully Initiation in Mediterranean Cropland and Olive Groves

• Published in: Land degradation & development Vol. 28; no. 8; pp. 2540 - 2552
• Main Authors: Hayas, Antonio, Poesen, Jean, Vanwalleghem, Tom
• Format: Journal Article
• Language: English
• Published: Chichester Wiley Subscription Services, Inc 01.11.2017
• Subjects: Agricultural land; cropland; Crops; drainage; Drainage area; groves; Gullies; gully initiation; herbaceous crops; Impact analysis; Land use; olive groves; olives; rain; Rainfall; ravines; slope gradient; Spain; temporal variation; Temporal variations; Thresholds; Topography; Variation; Vegetation; Vegetation cover; Vegetation effects; watersheds; Spain

Topographical threshold conditions (s ≥ k a−b), expressed by local slope (s) and drainage area (a), have been widely used to predict gully incision locations. However, little attention has gone to the variation of the thresholds over time. Rainfall variability and changing land use or vegetation cov...