Preliminary study on prediction of green period of grassland in Qinghai Lake region

he grassland ecosystem in Qinghai Lake region is an important component of tourism resources.The green period of grassland would affect its utilization and management,which closely depends on the weather conditions. The long term meteorological data were used to predict the start and end date of green period of grassland and the prediction model was established as well. The results predicted with prediction model fitted the real situation and could be used in grassland utilization and management.