Relationship between agroforest landscape and soil erosion intensity in Minjiang headwater region

The study about the effect of vegetable landscape on the soil erosion is important for the ecology reconstruction which aims at controlling soil erosion. Dynamic variations of agrofforest landscape pattern and soil erosion intensity were analyzed using remote sensing and GIS techniques. And the effects of land scape variation on soil intensity were analyzed from the view of land scape. Taking the mitigating effect on erosion intensity into consideration, landscape classes could be arranged in the order: coniferous forest > deciduous forest > mixed forest > shrub > grassland > cultivated land. At the same time, for most landscape classes, except for cultivated land, increasing the mean patch size and complicating the shape of patch will be helpful to relieve the erosion intensity. However, for cultivated land, simplifying the shape of patch and scattering the patches have the same effect.