Evaluating structure and function status of ecosystems are important for conservation and management purposes. Rangeland health is a method that evaluates rangeland function in terms of soil and habitat stability, hydrologic condition and living organisms' health. Since ground-based methods for assessing rangelands are time-consuming and costly, this study was conducted with the aim of investigating the health status of rangeland ecosystems in Semirom, Isfahan, using land-based approaches and remote sensing techniques. The reference site was identified in Ghareghach basin as the control to assess rangeland status in twenty studied sites. A completely random method was used to select various sites in different sub-basins. Seventeen rangeland health indicators were evaluated in each site, and each of the indicators was scored in 5 descriptive classes and the health status of each site was determined. Results indicated that 7, 9 and 4 sites were categorized as healthy, at risk and unhealthy respectively. An OLI Landsat 8 satellite image of 2017 was used to calculate leakiness index (LI) and evaluate the functional status of the sites. Digital elevation model was derived from topography maps and NDVI map was extracted from the satellite image. The sub-basin map was also developed in the Arc SWAT software environment. The Qhareghach basin with an area of 8251.38 hectares was divided into 11 sub-basins. Three maps produced in the LI software environment were used to calculate LI values for each sub-basin. The correlation of rangeland health results and LI values was determined. The results showed that there is a significant relationship between canopy cover and LI values in the studied basins ( P ?0.05). Also, there was a significant correlation between NDVI and canopy percentage measured by field method ( P ?0.05). The results of this study showed that the rangeland health and LI had a good ability to evaluate the functional status of semi-arid ecosystems.