Experiment study on the law of thermal motion of water of soil freeze-thaw on the black land

Black land situates seasonal permafrost in our country , in order to further study the diversification of soil structure and the affect for water-soil erosion in the role of freeze-thaw cycle on the black land, this paper has test on the status of field soil thermal motion of water on the black land within Ulanhot of Inner Mongolia, the variation of soil temperature and water content has been analyzed in the change of weather index on the land surface, the features of soil freeze-thaw and changes in water and heat has also been reached conclusion, thus, the theoretical basis on the water soil erosion has been provided for agricultural development and the prevention of freeze-thaw effect in the region.