Impact of lake on the hydrological variables based on the global land data assimilation system (gldas) products

Studying evapotranspiration is of great importance for understanding the hydrological cycle and terrestrial ecosystem both at global and regional scales. In this study, the area of Qinghai lake from 1986 to 2022 were obtained by remote sensing technology, and relative hydrological variables including evapotranspiration (ET), transpiration, canopy water evaporation, direct evaporation from bare soil, as well as potential evaporation rate, were obtained from the Global Land Data Assimilation System (GLDAS) products during the same period to quantitatively analyze the impact of lake on the hydrological variables.