| In order to evaluate the natural risks of different vegetables, the comprehensive disaster risk is used to represent the combined effects of multiple natural hazards on vegetable production, taking celery, cabbage, cucumber, eggplant, tomatoes as object, using the actual yield of five vegetables from 2002 to 2012, then fit trend equation, find out
the fitted values, and calculate the losses. Using non-parametric information diffusion model, we can get different loss rates of vegetables. The result shows that the descending order of five vegetables production risk is eggplant> celery> tomatoes>cucumber> cabbage. The conclusion is that vegetables comprehensive disaster risk in Hebei province is large, and we have to take effective measures to control it. |
