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| 冠层CO2分布廊线的农业气象数值模拟研究 | |
| 引用本文： | 刘建栋,于强,等.冠层CO2分布廊线的农业气象数值模拟研究[J].气象科学,2002,22(3):264-272. |
| 作者姓名： | 刘建栋 于强 |
| 作者单位： | 1. 中国气象科学研究院,北京,100081 2. 中国科学院地理科学与资源研究所,北京,100101 3. 南京大学大气科学系,南京,210008 |
| 基金项目： | 国家自然科学基金重大项目 (49899270)，中国科学院“百人计划”项目资助，中国气象研究院博士后基金资助 |
| 摘 要： | 本文将农田微气象模式与冬小麦冠层光合模式进行耦合，建立了一个具有较强机理的冬小麦冠层CO2分布廓线模式，冠层光合模式中考虑了气孔对叶片光合的调节作用，具有明确的生物学意义，实测资料验证表明，模式可以较准确地模拟拔节期冬小麦冠层CO2分布状况，平均相对误差为6．47％，数值分析表明：当冬小麦冠层风速为1m/s时，CO2廓线弯曲最为明显，随着风速加大，CO2廓线弯曲程度变小，CO2浓度升高后风速对廓线影响的基本规律没有发生改变，但是冠层中CO2浓度差将进一步加大。 |
| 关 键 词： | 农业气象 作物冠层 风速 CO2廓线 数值模拟 |
| 修稿时间： | 2001年6月5日 |
SIMULATION OF THE CO_2 CONCENTRATION DISTRIBUTION IN THE WINTER WHEAT CANOPY |
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| Liu,Jiandong.SIMULATION OF THE CO_2 CONCENTRATION DISTRIBUTION IN THE WINTER WHEAT CANOPY[J].Scientia Meteorologica Sinica,2002,22(3):264-272. | |
| Authors: | Liu Jiandong |
| Abstract: | Coupled the microclimatic submodel with the photosynthetic submodel of canopy,a numerical model for simulating CO 2 concentration distribtuion in winter wheat canopy was established,in which the impacts of stoma controllable function on leaf photosynthesis were full considered.Validation of the model with the data observed in Yucheng Comprehensive Experimental Station,and the results showed that the average relative error of the model is no more than 7.6%.The numerical analysis showed that CO 2 profile has the biggest curved degree when the wind velocity above canopy equals 1m/s,and the curved degree of CO 2 profile decreases with the wind velocity increasing.The basic regulation of impacts of wind velocity on CO 2 distribution will have no change,but the spatial difference of concentration in canopy will increase under the doubled CO 2 scenery. |
| Keywords: | Microclimatic model Crop file CO 2 profile Numerical simulation |
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