Study on the Dynamic Monitoring of Soil and Water Conservation of Huangfuchuan Valley

Taking Huangfuhuan basin as the study area,based on different periods of digital aerial photography,using ArcGIS software,through visual interpretation and comprehensive judgment,it extracted the measures of soil and water conservation,the vegetation coverage and the soil erosion data in 2006 and 2011 respectively,determined its transfer matrix and analyzed the dynamic change of the soil and water conservation measures,the vegetation coverage and the soil erosion intensity in Huangfuchuan basin. Results show that in five years,in Huangfuchuan basin,the net variation of soil and water conservation measures is 78km2,accounting for2.4% of the total area of the basin,change order is forest shrub ditch terrace arbor; The net change in vegetation coverage is 33km2,accounting for 1.0% of the total area of the basin,change order is low coverage medium and low coverage medium coverage; Net variation of soil erosion intensity is 60km2,accounting for 1.85% of the total area of the basin,the gully erosion change is smaller,surface erosion change order is moderate strong micro degrees mild very strong intense.