Published in Scientific Papers. Series E. Land Reclamation Earth Observation & Surveying, Environment Engineering, Vol. I
Written by Anişoara IRIMESCU, Gheorghe STĂNCĂLIE, Argentina NERŢAN, Denis MIHĂILESCU, Cristian FLUERARU, Sorin CONSTANTIN

Drought refers to a temporary decrease in water availability, for example, when it doesn’t rain over a long period of time. On the other hand, water scarcity occurs when the demand for water exceeds the available sustainable resources. Most European countries are affected by the consequences of water scarcity, droughts and land degradation caused by water resources over-exploitation and exacerbated by climate change. The satellite systems present a wide range of new capabilities that can be used to assess and monitor the actual conditions of agro­ecosystems since information can be obtained on remote, wide area, non-destructive and/or real-time bases. Remote sensing data with low spatial resolution and high temporal resolution provide a useful tool for the monitoring of the vegetation activity from global to regional and local scale. The agricultural vegetation condition monitoring is currently possible, ranging from medium spatial resolution satellite derived - products, with daily revisit (NOAA­AVHRR, SPOT-VEGETATION, etc.) to high and very-high spatial resolution, offered by environmental satellites (LANDSAT, SPOT, FORMOSAT, IKONOS, QuickScat etc.) with longer revisit period. The most important parameters are: vegetation indices, maximum greenness during the growing season, total greenness during the growing season, fraction of photosynthetically active radiation and leaf area index.The study is focused on vegetation state assessment based on satellite derived products for drought monitoring (drought duration and intensity). This paper is based on the analysis of several vegetation indexes (NDVI, NDWI, etc) and biophysical parameters (LAI, fAPAR, land surface temperature, etc).The study area is focused on agricultural region situated in the western part of Romania, in the Romanian downstream of Mures River.

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drought

Mures

remote sensing

vegetation indexes

water scarcity