The Supervising Information System Of County Scope For Water And Soil Losses

Water and soil losses are a kind of high frequency disaster,With the wide effect and great damage,it arousing the attentions from more and more subjects and departments. In this text,We attempt to research the supervising information system of county scope,using the Data of NanZhang county as the sample. This system will dispart to three sub-modules:data collection and importing,data anlaysis and disposing,classified map exporting.In the water and soil losses modeling,we apply the Uni versa! Soi 1 Loss liquation. And we distill plant covering factor and the conservation of soil and water factor with landsat TM;we distil] the slope factor with ARC/INFO(version 8.01);at last,we get the gradation of soil erosion according to ((Standards for classification and gradation of soil erosion)) (SL 190-96). From the result we can find that this system will be good to get real-time and accurate data. 1 give some programs for basic function model. I expect it will be helpful to the information management of county water and soil losses.