Wang, X., Fu, Z., Ciais, P., Wang, L., Buchmann, N., Keenan, T. F., Kauwe, M. D., PeƱuelas, J., Chen, G., Gong, X., Xiao, J., Li, X., Xie, Q., Stoy, P. C., Makowski, D., Smith, W. K., Wang, H., Wang, S., Zhang, F., Niu, S. (2026). Global distribution and changes of leaf-level intrinsic water use efficiency and their responses to water stress. Nature Communications. https://doi.org/10.1038/s41467-025-68252-9