Spatial and temporal evolution characteristics of water resources in the Hanjiang River Basin of China over 50 years under a changing environment

In the formulation of scientific water resource management systems and strategies for improving utilization efficiency, effects land use change climate on temporal spatial distribution resources cannot be overlooked. And Hanjiang basin is main source supply to eastern Guangdong southwestern Fujian, China. However, experiencing a significant imbalance between demand. This study investigated spatiotemporal in River Basin under changing environmental conditions using Soil Water Assessment Tool model. The findings reveal that, from 1980 2020, changes significantly varied among sub-basins, reflecting heterogeneity. Moreover, sub-basins with severe showed resources. From 1970 each sub-basin changed change, indicating variability. Under combined amount decreased its dramatically. At same time, evolution was consistent that influence both primary driver. provide theoretical guidance research management.