%0 Journal Article %A Changqing SONG %T Preface to the special issue on the ecological- hydrological processes in the Heihe River Basin: Integrated research on observation, modeling and data analysis %D 2019 %R 10.1007/s11442-019-1680-4 %J Journal of Geographical Sciences %P 1437-1440 %V 29 %N 9 %X %U https://www.geogsci.com/EN/10.1007/s11442-019-1680-4