[2] Wang S, Fu B J, Piao S L et al. Reduced sediment transport in the Yellow River due to anthropogenic changes[J]. Nature Geoscience, 9, 38-41(2016).

[11] Aparicio J, Ruiz J L, Sirvent I. Closest targets and minimum distance to the Pareto-efficient frontier in DEA[J]. Journal of Productivity Analysis, 28, 209-218(2007).

[12] Hu J L, Wang S C, Yeh F Y. Total-factor water efficiency of regions in China[J]. Resources Policy, 31, 217-230(2006).

[13] Quah D T. Empirics for Growth and Distribution: Stratification, Polarization, and Convergence Clubs[J]. Journal of Economic Growth, 2, 27-59(1997).

[14] Anselin L, Gallo J L, Jayet H. Spatial Panel Econometrics[J]. Springer Berlin Heidelberg(2008).