The Study and Application of Crop Yield Response Model under CO_2 Multiplication Based on Remote Sensing Information and Crop Photosynthesis
CO_2倍增下遥感-光合作物产量响应模型的研究与应用

In the paper, considering the vegetation parameters of remote sensing information and crop eco\|physiological characteristics, the crop yield estimation model was firstly set up based on the variables derived from NOAA\|AVHRR data and crop photosynthesis. Among them, photosynthetic active radiation (PAR), CPAP (Crop Photosynthetic Assimilation Potential, which reflects crop photosynthetic time and area), and photosynthetic rate were calculated from remote sensing information and meteorological data. In the typical research area of North China Plain, the developed model was applied to regional crop yield distributions, it shows that the model has better precision. Secondly, taking into account the impact of CO\-2 doubling to agroecosystem and its influences on winter wheat, the crop yield estimating model based on remote sensing data and plant photosynthesis was further developed, and the regional crop yield under CO\-2 doubling was estimated using the model. The further changes of crop yield distributions were given using the developed model.