Sand barrier microplastics alter plant–soil interactions in artificial sand-fixation areas by constraining plant nutrient utilization - Nan Lu; Bo Wang; Yuwei Li; Dandan Zhou; Yanan Yu; Xin Li; Chuanqi Wang; Pingping Zhu; Qianqian Qin; Ke Zhao; Xuexia Hu; Pu Li (Journal of Arid Environments, 2026)