Thesis Submitted to Northwest A&F University in Partial Fulfillment of the Requirements for Degree of Master of Agriculture EFFECTS OF FREEZE-THAW CYCLES AND INITIAL SOIL WATER CONTENT ON SOIL SHEAR STRESS IN CHINESE MOLLISOL REGION Major: Soil and Water Conservation and Desertification Combating Research Field: Soil Erosion Candidate: Myadagbadam BATDORJ Supervisor: Professor, Dr. ZHENG Fenli Date of submission: May 2019 Institute of Soil and Water Conservation Northwest A&F University