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2 Landform Analysis

2 2011

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The origin and development of a valley bottom gully in a small rangeland catchment : influences of land use in the growth model

Gómez Gutiérrez A., Schnabel S., Lavado Contador F., Jariego García A.

Landform Analysis

2011

Vol. 17

65-70

In the present paper, 8 aerial orthophotographs were used for analysing the evolution of a valley bottom gully and its relationship with land use and vegetation cover in SW Spain. In addition, the growth model observed was compared with the literature. Results showed an increase in the area affected by gullying during the period by 314 m2 and a clear relationship between the areas affected by gullying and land use intensity was found.

Availability and characteristics of the historical and recent aerial photographs and orthophotographs in Spain for the analysis of rill and gully erosion

Jariego García Jariego, Gómez Gutiérrez Gómez, Lavado Contador F., Schnabel S.

Landform Analysis

2011

Vol. 17

51-55

Several kinds of methodologies and techniques have been used indeed in order to monitor rill and gully erosion processes. In this paper authors provide a guidance regarding the available aerial photographs and orthophotographs for rill and gully erosion studies in Spain and covering the whole country. A set of 8 different series of aerial photographs and orthophotographs were located in Spain. Their characteristics were quite diverse, differing in scales, formats and resolution. Most of the photographs and orthophotographs proved, at least, to be suitable for their use in studies of permanent gullies, allowing the monitoring of medium and long-term erosion rates since 1945.