The innovation of this study is to estimate the Available water capacity (AWC) of main soil types based on physical and chemical characteristics of soils and to model it with geographic information system (GIS) in China.

• 本研究的创新之处在于基于土壤理化性质估算我国主要土壤类型的土壤有效含水量，并运用GIS技术构建了我国土壤AWC地理空间模型。