Variation features of micro-waterlogged topographic and ecological agriculture models in Jianghan Plain

This paper analyzes the reason of forming waterlogged disaster and 6 variation features of micro-waterlogged region in Jianhan Plain．The land type of micro-waterlogged region in Jianghan Plain is classified to 6 kinds according to the differences of the micro-landforms and waterlogged disaster situation．A lot of ecological agricultural models are put out respectively in the lowland similar to plate shape，according to the different altitudes，named respectix ely water circle，flooded circle，waterlogged circle，dry field circle and courtyard circle．