Vízügyi Közlemények, 1994 (76. évfolyam)

3. füzet - Ligetvári F.-Szalai Gy.: Az első országos eróziós megfigyelő rendszere

330 Ligetvári F.-Szálai Gy. zásával a széles körű információs igényeket magasabb szinten lehet kielégíteni. Az adatmennyiség fizikailag gazdaságosan tárolható a számítógép merevlemezén. Az adatbázis struktúráról az 5. ábra az tájékoztatást. * * * The first surficial erosion monitoring system in Hungary by Dr. Ferenc LIGETVÁRI. Agr. Eng. and Dr. György SZALAI, C.E. The authors have developed, together with a team of experts, the Soil Protection Monitoring System (SPMS) as part of the Information and Monitoring System of Environmental Management (IMSEM). The network of SPMS consists of round 1200 observation points. Regular monitoring of the state of the soil is carried out at 800 stations corresponding to specially problematic sites. In the network for water erosion the monitoring stations are grouped into three categories: Small catchment, Type A.; Lotsize measurements. Type В.; Individual sites, Type C. Monitoring stations of wind erosion are grouped into two categories: those with and without wind profile measurements (Figure 1.). For the Type A sites of the water-erosion network erosion measurement points have been established in order to allow the tracing of the movement of sediments (Figure 2.). Facilities shown in Figure 3. have been proposed for the measurement of runoff and erosion from sites Type В (from lot-size experiments). Installation of soil traps, shown in Figure 4., has been proposed for the observation of soil motion upon wind erosion. Data to be collected and measured at the monitoring sites have been grouped into four categories: - agricultural and agrotechnical data, - soil characteristics, - meteorological and hydrological data, - measurement data of erosion processes. - The time sequence of measurements includes the following phases: - Base-line surveys, preceding the measurements - periodical measurements, - continuous measurements. The authors suggest the development of a sophisticated data base for storing measurement data. This data base could be interfaced with the existing data base of IMSEM, as the sub-base of the latter. The structure of the proposed data base is shown in Figure 5. * * * Das erste landesweite Beobachtungssytem der Oberflächenerosion in Ungarn von Dr.-Agr.-Ing. Ferenc LIGETVÁRI und Prof. Dr.-Ing. György SZALAI Die Verfasser haben, in Zusammenarbeit mit einer Expertengruppe, das System für Bodenschutz und -monitoring (TIM), als eines der Untersysteme des Informations- und MonitoringSystems für Umweltbewirtschaftung (KIM) entwickelt.