the hilly and gully area of the Loess Plateau
agricultural area at the typical hilly of red soil
semiarid hilly area of the Loess Plateau
semiarid hilly area of Southern Ningxia
middle hilly region of loess plateau
loss hilly and gully area
Longzhong loess hilly region
Loess Plateau hilly region
loess hilly region of Southern Ningxia
loess hilly region division of northern Shaanxi Province
loess hilly region
黄土丘陵区
黄土丘陵沟壑区
土壤水分
丘陵沟壑区
黄土丘陵
黄土高原
黄丘区
黄土高原丘陵沟壑区
Loess hilly gully region
Loess Hilly Gully country
Loess hilly area
黄土丘陵区
黄土丘陵
土壤酶活性
陇中黄土丘陵区
黄土丘陵沟壑区
loess hilly and gully regions
loess hilly and gully region of Northern Shaanxi