bill and gully area of the Loess Plateau

eastern Gansn gully area on the Loess Plateau

gullied-hilly area of the Loess Plateau

Gully areas of the Loess Plateau

gully region of the Loess Plateau

hill and gully area of the Loess Plateau

hill and gully region on the Loess Plateau

Hill-gully Area of the Loess Plateau Regions

hilly and gully region of the Loess Plateau

hilly and gully region on the Loess Plateau

hilly and gully regions of the Loess Plateau

Hilly area of the Loess Plateau

Hilly areas of the Loess Plateau

hilly gully area of the Loess Plateau

hilly loess region on the Loess Plateau

hilly region of the loess plateau

hilly regions of the Loess Plateau

Hilly-gully area of the Loess Plateau

Hilly-gully region of the Loess Plateau