Half-dry ISDN: Average vegetation indices of the month for rainfed and grassland areas
Description
The series of raster maps of monthly average vegetation indices of rainfed NDVI (Normalized Difference Vegetation Index) of the study of Monitoring the Annual Evolution of crops and Harvests contains the maps of vegetation indices with the average value of each month, obtained for each agricultural season and each month of study, for the entire area of rainfed land and grasslands of the regions studied.
These average monthly indices of each agricultural campaign, after crossing them with thematic cartography, are compared with the average monthly data of the historical series.
To obtain these results, the Ministry of Agriculture and Fisheries, Food and Environment (MAPAMA) has a system for monitoring the evolution of rainfed crops and grasslands, based mainly on the information provided by vegetation indices (NDVI) generated with daily satellite images NOAA-AVHRR. This system has been in operation since 1993, paying particular attention to the detection and localization of drought situations throughout the successive agricultural years, in order to provide for the necessary measures to be taken to mitigate its effects. The system is in operation between the months of January and June, the period in which the studied crops are developed.
The study is carried out in the autonomous communities of Navarra, Aragón, Cataluña, Castilla y León, La Rioja, Madrid, Castilla-La Mancha, Comunidad Valenciana, Andalucía, Región Murciana, Extremadura and Baleares, as they comprise almost all rainfed crops and grasslands.
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