Soil is an important resource on the Earth which provides materials and foods to people live on. The force and effects of the soil quality and quantity

both better and worse

touch the lives of local people. So the soil is too precious to be eroded away without trying to hold it in place and increase its productivity. The middle reaches of Ayeyarwaddy in Myanmar

is the most well known arid zone. The soil erosion and land retrogression are endangering the people’s lives. In this paper

we put forward a way of studying soil erosion and relations of soil erosion factors by integrated GIS and RS. Firstly

satellite images （TM and SPOT） have been integrated and the ground real conditions have been rectified. Secondly

according to the ecological environmental factors

the spatial database and Digital Elevation Model of the study area have been built. Finally

referring to National Universal Soil Loss Equation

the quantitation and distribution of the soil erosion

risks and changes have been obtained. By simulation and measuring

we study the relations in soil erosion and measurement

the relations in the soil erosion among forest type and crown

topography and the soil texture. Furthermore

we put on the rational spatial allocation of agriculture and forest. Thus

it is important and imperative to conserve the nature forest

close forest area

afforest in bare land

rationally utilize land and implement water and land conservation project as a way to control the soil erosion for ecological environment rehabilitation and the sustainable development.