Waterlogged land is not only of low productivity but also would indirectly make the adjacent farmland rather inefficient, which means higher input but lower crops yield. Moreover, waterlogged land would increase soil erosion. Gangzhongwa waterlogged land, common and widely distributed in Jiusan farmland area, is just one typically kind of the waterlogged land in the black soil region of northeastern China. Soil profiles observation and soil samples physical properties analysis methods were adopted to study the possible factors contribute to form the waterlogged land. According to the preliminary results of this study, Gangzhongwa waterlogged land forms by three principle mechanisms: 1) the water table of groundwater is shallow and the soil profile texture varied regularly from clay loam layer, sandy loam layer to aquitard layer; 2) soil penetration is significantly correlated with sand content and gravel content; 3) the thickness of the surface clay loam layer is thin, and the sandy layer is thick with larger penetration and a bottom aquitard layer. This study would present some theoretical insights for the Gangzhongwa waterlogged land reform.
. Study on the formation of Gangzhongwa waterlogged land in the black soil region of northeast China[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE),,():1-8.