Soil erosion is one of the most serious eco-environment problems

which limits the development of society and economy along the Yellow River of western Shanxi Province. In this region

water erosion land covers 20777km2 and it is accounting about 79. 30% of the total land area in the 1990s

while water erosion land covers 17912.54km2 and it is about 68. 37% of the total land area in the 1970s. In other words

the increasing rate of soil erosion was 143.23km2 per year in recent 20 years. Soil erosion resulted in some negative impact on the society and economy in study region

such as cultivated land area reduction

land productive potentialities declining

water conservancy facilities destroying

ecological environment degradation and so on. Finally

some strategies of ecological construction for preventing water and soil loss are put forward according to the physical condition of this region.