Temporal-spatial distribution characteristics and quantification of the impacts of climate change and agricultural activities on crop water requirements in an arid region and transboundary river: a case study of the Syrdarya River basin, Central Asia

Hongwei Ruan, IGSNRR Institute of Geographic Sciences and Natural Resources Research, CAS, Key Laboratory of Water Cycle and Related Land Surface Process, Beijing, China and Jingjie Yu, IGSNRR Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing, China