Download CODIGO PONENCIA : 20112364ROHTAF TITULO PONENCIA

CODIGO PONENCIA : 20112364ROHTAF
TITULO PONENCIA :
CATEGORIA PONENCIA : Ponencia
CLASIFICACION TEMATICA : Degradación y desertificación de la tierra
AUTOR PRINCIPAL : MOUSAZADEH FATEMEH
ORGANIZACION : University of Malaya
PAIS : Malaysia / Malasia
Abstract
BY:
Fatemeh Mousazadeh
PhD. Student in Geomorphology
Department Of Geography
Faculty of Arts and Social Sciences
University Of Malaya
Kuala Lumpur. Malaysia
And
Prof, Dr. Khairulmaini Osman Salleh
Head of Department of Geography
University of Malaya
Kuala Lumpur. Malaysia
Title: “Gully formation, processes and the influent factors on its
extension in semiarid regions.”
Gully erosion, is often associated as one of the most severe forms of
soil erosion processes. The process is quite common in areas which are
devoid of vegetation such as in the semi arid regions of the world but
more recently gully erosion also predominates areas which are left
abandoned after deforestation processes. The weather of each area is very
important to make gullies and also geology and the type of soil has very
important role in formation of gully erosion. Also it can happen by some
digger animals such as rat and snake. Gully erosion often results in much
displacement of the soil mass, culminating in sedimentation, and
degradation of the land. Gully erosion have tremendous impacts on human
activities which includes decreasing soil nutrients and agriculture
productivity, river channel sedimentation and increasing floods and
impact on water resources development within a river basin. Considering
challenges faced in semiarid region, the study tries to evaluate all
effective elements on formation and development of gullies or erosionsensitive area by performing applied and scientific studies. In order to
achieve pre–determined goals, and providing great assistance for finding
all the reasons in gully formation, the research examines two major
objectives, which focuses on the processes of gully formation and the
influent factors on extension of gully. The research hopes to provide
better insights in understanding the evolution of gully erosion in semi
arid regions. In this research we use GIS and Ilwis for preparing the
maps, Excel for preparing the graphs and also Soil test as example in
Toroud basin in Semnan-Iran. By considering importance of the subjects
and with regard to the fact that studied region contains large and
extensive gully which introduces potential hazard for croplands and
habitats, and also make it difficult to pass through them, it is required
to perform all possible actions which leads to bring an end to
development and expansion of gullies.
Key words: gully erosion, processes, formation and extension.