black soil area in Northeast
Black soil in northeast China
black soil region in Northeast China
Changbai Mountain Area in China
hot summer and cold winter area in China
state-owned forest area in Northeast
The north high plateau area in China
Cold vortex in northeast China
Countryside in Northeast China
ecotone between agriculture and animal husbandry in northeast China
forests in Northeast China
heavy rainfall in Northeast China
Hilly region in northeast China
japonica rice in Northeast China
main grain production region in northeast China plain
Maize in Northeast China
Numerical weather prediction(NWP) model in Northeast China