photosynthesis model
1.Considering the parameters of remote sensing information and plant eco physiological characteristics,the crop yield estimation model was set up based on remote sensing information and plant photosynthesis model. Among them,Absorbed Photosynthetic Active Radiation(APAR),Crop Photosynthetic Assimilation Potential(CPAP) reflecting crop photosynthetic time,and photosynthetic rate were calculated by remote sensing information and meteorological data.
2.This model was consisted of six submodels: weather data generator, phenology submodel, photosynthesis biomass production submodel, crop growth dynamic submodel, dry matter production and yield formation submodel, and wheat potassium absorption and partitioning submodel. The model was founded mainly from the data of Ceres-wheat model.
3.STUDIES ON MODEL SYSTEM OF PRIMARY PROCESS IN PHOTOSYNTHESIS. (Ⅱ) FACTORS AFFECTING THE ELECTRON TRANSFER FROM PORPHYRIN TO ACCEPTORS.
4.The relationships between leaf net photosy nthetic rate of C3 and C4 plant with CO2 concentration intercellular, leaf tempe rature, and photosynthetic active radiation (PAR) were presented, respectively. The results show the numerical experiment may indicate the main characteristic o f plant photosynthesis in C3 and C4 plant, and further can be used to integrate with the regional climate model and act as land surface process scheme, and bett er understand the interaction between vegetation and atmosphere.
5.The relationships among vegetation carbon assimilation and remote sensing information such as NDVI (normalized difference vegetation index), LAI (leaf area index), APAR (absorbed photosynthetically active radiation), and TIR (thermal infrared radiation) were analyzed in this paper. It will be essential to establish the estimation model of carbon assimilation using remote sensing information and photosynthesis mechanism, and serve as an independent comparison to more detailed eco-physiological models of biological process.
6.Biomes estimating model based on remote sensing information must contact with the plant photosynthetic parameters, these factors include crop photosynthesis characteristic, Photosynthetic Active Radiation (PAR) impacting on crop and Absorbed Photosynthetic Active Radiation (APAR). The remote sensing information includes the Normalized Difference Vegetation Index (NDVI), Leaf Area Index (LAI). In the paper, process from the information parameter of remote sensing and the parameter of plant physiologically, the relationship models among LAI, APAR, PAR and NDVI were analyzed.
