Study the Relationship Between LULC, LST, NDVI, NDWI and NDBI in Greater Arba Minch Area, Rift Valley, Ethiopia

Abstract

The present study aimed to extract the LST and analyses its relationship with land-use/land cover and normalized difference vegetation index (NDVI), normalized difference water index (NDWI), and normalized difference built-up index (NDBI) in the greater Arba Minch, Rift valley, Ethiopia. The study was conducted for the two periods (08 Dec 2013 and 27 Dec 2020). The LST results show that 8C, 7C, and 38C, 34C are low and high during 2013 and 2020. A supervised image classification method was carried out in ArcGIS software to map the different LULC units in the present study area. Overall, the LULC dynamics indicate a notable increment in shrubland & plantation and, settlement and barren land. And, the forest and water bodies have decreased in small amounts, and bushland has reduced considerably. The current study's NDVI results indicate a notable decrease in the forest area and NDWI values, indicating shrinkage of water bodies during 2020. There are significant positive changes in NDBI value from 2013 to 2020.