Landscape fragmentation and soil cover changes on south- and north-facing slopes during ecosystems recovery : an analysis from multi-date air photographs

Drainage basin dynamics and morphology

Auteurs :
SHOSHANY, M.
CHURCH, M.
HASSAN, M.A.

Description :
A quantitative analysis is presented, of soil and vegetation patch patterns from air photographs of 3 dates (1956, 1976 and 1990). Relationships between changes in soil cover and landscape fragmentation are assessed for north- and south-facing slope units in the semi-arid zone of Israel undergoing recovery following severe overgrazing and wood cutting phases. Soil loss accompanied by an increase in rock fragment exposure, and an increase in soil erodibility due to a decrease in aggregate size and organic matter content are the 2 main characteristics of soil changes in this area.


Type de document :
Congrès

Source :
International symposium on drainage basin dynamics and morphology, Jérusalem, Israel, 1999-05, Geomorphology (Amsterdam), issn : 0169-555X, 2002, vol. 45, n°. 1-2, p. 3-20, nombre de pages : 18, Collation : Illustration, Références bibliographiques : 51 ref.

Date :
2002

Editeur :
Pays édition : Pays-Bas, Amsterdam, Elsevier