Abstract

This paper presents the research results of using multi-temporal satellite images to build a drought risk map based on the TVDI, thereby serving as a basis for assessing the impact of drought on agricultural land in two districts of Phu Cat and Phu My of Binh Dinh province. The analysis results from Landsat satellite images show that the areas of abnormally dry, moderate drought and severe drought have similar proportions among agricultural land types. Specifically, the total area of ​​rice crops is 19,553.90 hectares, with a moderate drought area of ​​30.00% and a severe drought of 11.00%. The area of ​​other annual crops is 9,971.54 ha, in which the moderate drought area accounts for the largest proportion with 42.66% and the severe drought is 20.07%. The ​​land for perennial crops has a total area of ​​8,633.09 hectares, in which the moderate drought part accounts for the highest proportion with 42.91% and the severe drought is 20.81%.