This paper uses climate data and climate scenario data to drive the Century model to simulate the net primary productivity(NPP)of ecosystems in some areas of Henan,and uses the MODIS vegetation index product to establish a linear model with the NPP simulated by the model to retrieve the NPP of the entire Henan region.The identification results show that the linear regression coefficient between the simulated NPP value and the measured NPP value reaches up to 0.9,the coefficient of determination reaches up to 0.85,and the root-mean-square error is 2.2.The results show that this paper uses Century model and remote sensing data to estimate vegetation productivity with high accuracy and universality in Henan,and the application of this method will play a certain role in estimating vegetation productivity in Henan in the future.
Century modelintegrated ecological remote sensing modelMODISmeteorological datanet primary productivity
万方数据
维普
