Desertification Reduces Organic Carbon Content and Nutrient Availability in Dryland Soils: Evidence From a Survey in the Amu Darya River Basin. - Zhang, Peng; He, Mingzhu; Wang, Jin; Huang, Lei; Yang, Haotian; Song, Guang; Zhao, Jiecai; Li, Xinrong (Land Degradation & Development, 2025)