气候变化对我国东部地区粮食产量的影响初探

本文在介绍了气候变化对生态和农业的影响基础上,利用我国东部地区100个站点的温度、降水资料,根据部分经验公式推导得出了计算粮食产量相对变率的公式。并计算了当年平均温度变化1℃、2℃、3℃,年平均降水量变化10%、20%、30%情况下的粮食产量的相对值。

POSSIBLE EFFECTS OF CLIMATE CHANGE ON FOOD YIELD IN THE EASTERN PART OF CHINA

On the basis of introduction of effects of climatic change on ecology and agriculture, the formula to compute related change rate of food yield was deduced by using the temperature and precipitation data of 100 stations in the eastern part of China and according to some empirical formula. The related values of food yield were computed when the yearly mean temperature changes 1, 2, 3℃ and yearly mean precipitation changes 10%, 20%, 30%. The results showed. The yearly mean temperature changes 1℃. The food yield changes 2-3% correspondingly, and the higher the latitude, the greater the effect is; The yearly mean precipitation changes 1%. The food yield changes 1% correspondingly, and it is not change in any where.