Multiwater Index Synergistic Monitoring of Typical Wetland Water Bodies in the Arid Regions of West-Central Ningxia over 30 Years

The Shapotou National Nature Reserve in the Ningxia Hui Autonomous Region is a typical arid region China. There an exceptionally serious problem of surface water resource conservation, and dynamic monitoring with help indices can to elucidate its change patterns impact mechanisms. Here, we analysed characteristics interannual variation area study from 1992–2021. correlation coefficients previous year contemporaneous bodies Yellow River total (TSWA) were calculated. results show following: ? In terms classification accuracy two methods, support vector machine classification, are more suitable for body extraction area. particular, three indices, NDWI, MNDWI AWEIsh, effective, average overall accuracies 90.38%, 90.33% 90.36% over 30-year period, respectively. ? From TSWA last 30 years, showed increasing trend increase 368.28 hm2. Among areas, Tenggeli Lake contributed most TSWA. ? highest between year’s was 0.89, indicating that better way protect maintain stability year-round. also strong correlation, rational use important direction future conservation resources