Soil salinization spatial-temporal evolution in Ebinur lake region

Taking three period's(1990,2001,2007)TM and ETM +satellite data as the basic data sources,we extracted the information of distribution of soil salinization quantitatively to statistic and analyze the spatial and temporal change of salt-affected soil in recent 20 years in Ebinur Lake.The results showed that:(1)The total area of salt-affected soil continued to increased from 1990 to 2001 and decreased from 2001 to 2007,The most widely distribution of it was in the 2001,then the area was up to the 2325.11km2.Severely and slightly salinized soil increased firstly,then decreased,while moderately salinized soil area continued to decline from 1990 to 2007;(2)The four land types: severely、moderately、slightly salinized soils and other areas had obviously mutual transformation in spatial-temporal;(3)The climate、topography and hydrology factors had the significant influence on forming of soil salinization,wasteland reclaimed blinding、unreasonable uses of water and land reasonable accelerated the salinization formation and enlarge their areas.