Air-photo is real image of ground scene in which there is plenty of imformation about landscape. By applying air-photo

it is possible to interprete soils. In air-photo interpretation of soils

the soil genesis grouping

soil information factors are connected with its image characteristics in photo according to the identity of soil distribution and bioclimate environment

the principal interpreting elements in different degree of soils grouping system is determined by using the image characteristics of topography

of plant cover and of hydrological condition in photo

which possess special effect on soil formation and can reflect soiltypc. By overall analysis of photo

the interpretation of soilgroup

soil subgroup

soil family and soil species can be done in surveyed region. In general

soils type above soil family degree can be interpreted by photo. For some of soils

even the soil species can be interpreted by photo. The air-photo interpretation of soils can meet the requirment compilation of mid-scale or small scale soil map. In soil-surveying

the field work can be less

the time for mapping shorter

the accuracy of mapping higher by applying air-photo.