an important factor in sustainable agriculture and economic management is to calculate areas under different crops that the inputs of agriculture connect to this topic. planning of agricultural mechanization, fertilizer and pesticide requirements, pests and diseases control, estimates of agricultural production, income and tax and financial planning, all linked to the cultivated areas and estim...

Land cover of Finnish Lapland was classified to 16 land cover classes using optical IRS LISS, Spot XS and MODIS satellite images, ancillary GIS data and decision tree classifier. The aim of this study was to test decision tree classifier for land cover classification and study the effects of its parameters to classification result. In the best case, the overall accuracy was about 68% for all 16...

Service-oriented architecture supports data and model sharing and interoperability. The concept of such a service-oriented and distributed architecture is applied to build and integrate web-based service models of ecological resources quantitative measurement. The paper is to develop and integrate a GI web service by using an algorithm that calculates net primary productivity of terrestrial veg...

background and objectives: food security has been most important concern of the mankind on the earth. on the other hand, agricultural productions have always been face by risk probability in the case of weather and changes in international markets, however this risk probability never undeleted completely, but could be minimized that by pre-harvesting yield estimation. in this study, different m...

High-resolution satellite images having a footprint smaller than 5 m are becoming increasingly available. A large number of the high resolution satellite sensors acquire imagery in a pushbroom mode with CCD linear array technology. The need for accurate 3D object reconstruction requires a sophisticated camera model, being able to deal with such sensor geometry. The software package SAT-PP (Sate...

This paper develops a multidisciplinary methodology that aggregates remote sensing products and the resources available in geographic information systems – GIS, for transportation planning. The analyzed parameter is accessibility. Public managers can use the accessibility measures in order to promote an appropriate urban planning, mainly the highway network infrastructure and the public transpo...

Drought is one of the major natural calamities causing important damages to natural vegetation, agriculture and the society. The climate changes scenarios forecast the increase and intensification of extreme phenomena all over the globe. Romania is one of the most vulnerable countries, and has 7 million hectares located within areas affected by the risk of desertification. An integrated system ...

Actualization of cartographic data using imagery is an important application in the earth sciences. Extraction of map objects such roads from satellite imagery are an important task in many civilian and military applications. Particularly, extraction of these objects from digital imagery is of major practical importance for data acquisition and update of geographic information systems GIS datab...