The System for Early Natural Disasters Monitoring in Agriculture

摘要

Droughts and floods are one of the major disasters affecting agriculture production in Poland. Data from optical and microwave satellite images and in-situ measurements of various soil-vegetation parameters have been collected and analyzed to develop the system for early detection of natural disasters, monitor their development and mitigate their impact on the agri-environment. The study include: assessment of crop growth conditions and elaboration of the method for drought detection and its influence on crop yield, detection of flood hazard, and determination of area with excessive moisture. Created system include low spatial but high temporal resolution optical NOAA.AVHRR, TERRA.MODIS, and SPOT.VEGETATION data for drought detection and monitoring, as well as high resolution microwave ERS.SAR and ENVISAT.ASAR data for the assessment of flood extend and the expand of excessive soil moisture. Crop growth conditions were analyzed on the bases of vegetation indices derived from visible and thermal infrared channels.