The investigation of physiographic properties for lands talent preliminary in west of Borujerd region

Fundamental of all plans of agriculture, forestry, range management and watershed management and aquifer and so on is physiographic study and determination of land talent. Since land use diversity in the region and soil erosion and degradation are important and this study was conducted by satellite photos and topographical maps with 1:50000 scale. After loading maps by GIS software, physiographic units and harmonious. Unit then having analyzed information were determined the researcher obtained hypsometry, aspect, slope and finally land talent maps based on physiographic properties. The results of field and combination of maps showed that there are many land uses in region, which have not been conform by physiographical study especially with slope. Thus this is one of the important factors to soil erosion and nature resources degradations inadaptable using based on suitable slope category. This region elevation are more than 1700 meter and there wasn’t too much different height between plain and sloppy region in which good soil and potential for growth plants. With delete of stone land and difficult to pass this different height didn’t have any role and there has been monotones relatively climate in region. According to this factor, notonly but also different aspects height didn’t have any affect on land talent ability. Not only beight but also different aspects didn’t have any effect on land talent ability. According to degradation intensity of natural resources and soil erosion in region, we must pay attention to percent of slope because it was the most important factor for determinaing land talent. According to maps slope class, we must allocate land with 0-12% to irrigated and dry farming, land with 12-14% to range management and gardening under counter and land with more 40% to plant a tree and semi tree and to conservation region.