Study on warning indicator system of snow disaster and risk management in headwaters region

Based on historical and survey data of snow disaster in winter of the headwaters area, the environment which caused snow disaster, the hazard factors and the objects were analyzed in the risk identification. The risks during winter in alpine region are mainly made up of the mutual superposition factors such as natural factors, biological factors, social and management factors. Warning indicator system was built up from the risk analysis of the snow disaster, and was quantized and ranked with qualitative and quantitative methods. On this basis, combining the content of animal management activities, the risk management in winter was divided into livestock management, grassland management, forage supply, grassland resource assessment and winter risk assessment. important value of various livestock production activities in risk management was analyzed.