주요 작물 단위면적당 생산량 확률밀도함수 추정

Estimating the Probability Density Functions of Crop Yields

Accurate characterizations of crop yield distributions are critical for crop insurance rate making as well as agricultural risk management. The yield distribution functions of 10 major crops (rice, barley, naked barley, red pepper, garlic, onion, radish, Chinese cabbage. apple, and pear) were estimated and presented by the producing region. Unlike typical approaches, which have been based on explicit assumptions about the yield probability density function, this article selects the form of distribution that fits best to the actual distribution of crop yields. For the sample period of 1991 to 1998, logistic distribution was found best to fit to the most cases.