Soil and water conservation at county level is characterized by the extensive project management

tremendous construction projects

dispersed locations

and various document types.In the meantime

the 3S technologies have applied to soil and water conservation

gradually and widely.Accordingly

the GIS based management information system on soil and water conservation at count y level is analyzed and designed.Sys- tem needs and target

fundamental techniques and functions

and initial operation are outlined.The management system function struct ure is discussed

including assistant plan design

dynamic data management

wa- tershed management

document management

and thematic map management

as well as such functions as inquiry

statistics

and report form.It will not only provide a scientific means for project management of ecological construction

but also bring forward a new pattern for the construction of management information system on soil and water conservation at county level.