Paper Information

Journal:   JOURNAL OF GEOTECHNICAL GOLOGY (APPLIED GEOLOGY)   SPRING 2010 , Volume 6 , Number 1; Page(s) 9 To 16.
 
Paper: 

GULLY BUILDING AND ADVANCING DUE TO CHEMICAL PROPERTIES OF SOIL IN DASHTYARI AREA, CHABAHAR

 
 
Author(s):  RAHNAMARAD JAFAR*, KHOSRAVI FEREYDOUN, RIGINEZHAD SHOKOUFEH
 
* DEPARTMENT OF GEOLOGY, ISLAMIC AZAD UNIVERSITY, ZAHEDAN BRANCH, ZAHEDAN, IRAN
 
Abstract: 
In the initial phase of the study, testing procedure of soil was considered necessary. And the testing process on the soil of 14 samples from the area which has gully erosion, as well as from the area, which has no gully erosion (with and without plant coverage) was carried out. The achieved results were very interesting. The EC, OM, SAR, ESP and pH and T.N.V. tests were carried out on the soil. According to the test, the soil of the majority of the area is silty loam. Silt is considered as the most sensitive soil, reacting to the erosion. The process of changes of pH, SP and T.N.V. was small. The obtained results from the changes in the tests of SAR, ESP and EC, more or less in the whole area of study, were the same. The scale of salt contaminations, existing in the soil of the wall of the gully, comparatively to the floor of the moat and surface of the land is higher. The quantity of sodium of the soil is high. Therefore, the quantity of SAR and ESP of the soil is high However, the quantity of salts in the area which has no gully erosion and with plant coverage is considerably less than in the erosion area and other non-erosion area without plant coverage. Still this erosion is high in this area and whenever the plant coverage of the locality die dies, the danger of erosion will start. The quantity of OM in the soil is approximately in low quantity. This can be considered one of the effective factors in erosion and its development. With the above mentioned tests, it can be concluded that soil is one of the effective factors in erosion in Dashtyari area.
 
Keyword(s): GULLY EROSION, DASHTYARI, SILTY LOAM, CHABAHAR
 
References: 
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