InVEST model-based estimation of water yield in the Upper Tuul river basin

The estimation and mapping of water yield are significant importance to the effective planning management resources in Mongolia. In this study, we quantified assessed Upper Tuul River basin using Integrated Valuation Ecosystem Services Tradeoffs (InVEST) Water model. study aimed test whether it is possible estimate selected research area required input data included land use cover, mean annual precipitation potential evapotranspiration, soil depth, plant available content. addition, those were obtained from Landsat 8, Climate Hazards Group Infrared Precipitation with Station (CHIRPS), MODIS Global Terrestrial Evapotranspiration Product (MOD16), International Soil Reference Information Centre (ISRIC) database. Finally, generated spatial distribution maps, namely, actual evapotranspiration (mm), volume (km3) by pixel within area. According modelling results, estimated value for was 295.08 mm, 827.09 mm respectively 229.13 average 55.89 0.43 km3 result slightly higher (15.1 mm) terms compared results previous studies, conducted same area, found that has also been impacted. However, InVEST (Water Yield) model can be used future studies concerning resource river basins as further improve in-situ measurement satellite products high accuracy data.