Abstract: In order to explore land use type changes that were caused by human intervention in Qingshuihe watershed of Loess Plateau and its impact on ecosystem services,the value of ecosystem services was studied with land use type of Qingshuihe watershed in1959,1986 and 2007.Results show that:97% of the total area of Qingshuihe watershed is woodland,grassland and farmland in three times;Land use showed that forest area increased,the area of grassland and farmland decreased;Three kinds of ecosystem service value in addition to the waste disposal and food production,the value of other services from 1959-2007 showed increase,an increase in descending order:gas regulation,raw materials,water conservation,biodiversity protection,soil formation and protection,climate regulation and entertainment culture.Therefore,on the basis of the pursuit of the total value of ecosystem services this watershed could not pursue forest area increase during the construction of the ecological environment but should fully consider local water resources and economic development.

Key words: Qingshuihe watershed, land use type, service value