Agro-ecological and land information system

Natural resources, essential for human existence and food production are je opardised. Elaboration of ecological studies for professions that deal with environment is becoming a necessity. The importance of creating active inf ormation system of natural resources, multidisciplinary approach to making decision on moves in managing the environment, and importance of making cen tral organisation for implementing the lasting management are being emphasi sed in the paper. The importance of application of geoinformation technolog ies is proved by a high confidence of tools for analysis of complex ecologi cal features and by possibility of modelling-correlating the ecological dat a with the management. Basic parts of an integral (ecological-economic) mat hematical model profit-plant-soil-climate and the basic principles of calcu lation by folding different layers of data within the grid-based GIS are be ing described. Possibilities of collecting, processing and displaying data with the geocoding have especially progressed with the evolution of geoinfo rmation technologies. From the maps interesting for agricultural management , map of soils, map of nutrients in soil, climatic maps, maps of suitabilit y indicators and fertility, optimal use, prediction of crop yield and other s are especially emphasised. The basic principles of detailed management im portant factors mapping, such as coefficient of erosion, amount of drain, i ndex of aridity, water-crop stress, suitability and other indirectly estima ted parameters, as well as the evaluation of the plant-soil-climate ecologi cal model as a base for the prediction of crop yield are presented. These p rinciples will be the basis for the future research and application in prac tice.