Lower reaches of the Heihe River
middle reaches of the Heihe River
the Heihe River catchment
The lower reaches of the Heihe River
The middle reaches of the Heihe River
the lower reaches of Heihe River
the middle and lower Heihe River basin
The middle reach of Heihe River basin
The middle reaches of Heihe river
The middle-lower reaches of Heihe river
the upstream Heihe river
A long the river cotton region
a regulated discharge regime of the river
actuality of the river course
capacity entering the river
cause of formation in the river pattern