Pig and poultry production in China had experienced considerable changes from 1960 to 2010.The present study aimed to evaluate the effects of these changes on g
Groundwater is a key component for water resources in Sanjiang and Songnen Plain,an important agriculture basement in China.The quality and the renewability of
Agricultural geospatial information is critical for agricultural policy formulation and decision making,land use monitoring,agricultural sustainability,crop acr