Because of the construction o f the Three Gorge Project (TGP), the local turbulent flow, compared to the original, h as been changed greatly. In order to analyze the variation of hydrodynamic feat ure in detail, a 3-D...Because of the construction o f the Three Gorge Project (TGP), the local turbulent flow, compared to the original, h as been changed greatly. In order to analyze the variation of hydrodynamic feat ure in detail, a 3-D mathematical model was established to simulate the turbule nt flow in the corresponding area. The results of computation indicate that grea t changes of flow took placed in the area close to the cofferdam, but the area i s not large. The results are in agreement with that of the obtained.展开更多
Basic structure and algorithm of leaf mechanism photosynthesis model were described in first part of this study based on former researcher results. Then, considering some environmental factors influencing on leaf ph...Basic structure and algorithm of leaf mechanism photosynthesis model were described in first part of this study based on former researcher results. Then, considering some environmental factors influencing on leaf photosynthesis, three numerical sensitivity experiments were carried out. We simulated the sing le leaf net CO2 assimilation, which acts as a function of different light, carbo n dioxide and temperature conditions. 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.展开更多
文摘Because of the construction o f the Three Gorge Project (TGP), the local turbulent flow, compared to the original, h as been changed greatly. In order to analyze the variation of hydrodynamic feat ure in detail, a 3-D mathematical model was established to simulate the turbule nt flow in the corresponding area. The results of computation indicate that grea t changes of flow took placed in the area close to the cofferdam, but the area i s not large. The results are in agreement with that of the obtained.
基金Natural Science Foundation of China (Grant No. 39900084)
文摘Basic structure and algorithm of leaf mechanism photosynthesis model were described in first part of this study based on former researcher results. Then, considering some environmental factors influencing on leaf photosynthesis, three numerical sensitivity experiments were carried out. We simulated the sing le leaf net CO2 assimilation, which acts as a function of different light, carbo n dioxide and temperature conditions. 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.
