In the present study, in order to calculate the movement of sand dunes in the period between 2001 and 2010, the ASTER (Advanced Space-borne Thermal Emission and Reflection Radiometer) images were used. The training samples were obtained from the field, and the images of the years 2001 and 2010 were classified using maximum likelihood algorithm and decision making tree. The study area was classi...

Today, industrialization and urbanization in large cities cause an increase the surfaces covered with man-made objects such as concrete asphalt. The expansion of urban areas using materials high heat storage properties, directly affect Land Surface Temperature (LST), which shows sensible temperature region. LST is connected to natural green vegetation land varies widely areas, these differences...

We investigated the Classification of satellite images and multispectral remote sensing data .we focused on uncertainty analysis in the produced land-cover maps .we proposed an efficient technique for classifying the multispectral satellite images using Support Vector Machine (SVM) into road area, building area and green area. We carried out classification in three modules namely (a) Preprocess...

the kind of land use and intensity of its change is considered as important desertification indices in different models. land use change is one of the main anthropogenic factors in the desertification. the current research was carried out around imam khomeini airport, with an area of 32000 km2, in order to evaluate mentioned area's land use changes effects during 1955-2003 on desertification. t...

Hydroelectric energy generates more than 50% of all renewable electricity in the world. The Amazon is home to a large part these ventures, promoted as strategy independence order reduce greenhouse gas emissions countries region. However, hydroelectric plants lead changes land cover, fragmentation, degradation, and loss tropical forests. This article analyzes spatial pattern alterations cover mu...

We describe a project that is monitoring land condition in the south west of Western Australia using Landsat Thematric Mapper satellite images and terrain data derived from digital elevation models (DEMs). Land Monitor is a multi-agency project of the Western Australian Salinity Action Plan supported by the Natural Heritage Trust. The focus of the project is on broad-scale monitoring of land co...

Mapping land use/land cover (LULC) changes at regional scales is essential for a wide range of applications, including landslide, erosion, land planning, global warming etc. LULC alterations (based especially on human activities), negatively effect the patterns of climate, the patterns of natural hazard and socio-economic dynamics in global and local scale. In this study, LULC changes are inves...

In an area like the Jharia coal® eld ( JCF), where extensive and rapid underground and opencast mining is going on continuously, land-use studies are of paramount importance. This paper discusses the remote sensing-GIS techniques used for identi® cation of various land-use classes on satellite imagery and enhanced products and identi® cation of time-sequential changes in land-use patterns. The ...