| 农田开放环境下CO_2浓度的激光在线监测 |
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| 引用本文： | 何莹,张玉钧,刘建国,宋雪梅,王立明,朱安宁.农田开放环境下CO_2浓度的激光在线监测[J].大气与环境光学学报,2010,5(6). |
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| 作者姓名： | 何莹 张玉钧 刘建国 宋雪梅 王立明 朱安宁 |
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| 作者单位： | 1. 中国科学院安徽光学精密机械研究所中国科学院环境光学与技术重点实验室,安徽,合肥,230031
2. 中国科学院南京土壤研究所土壤与农业可持续发展国家重点实验室封丘农业生态实验站,江苏,南京,210008 |
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| 基金项目： | 中国科学院知识创新工程重要方向项目(KZCX-YW-411); 国家高技术研究发展计划(863计划)子课题(2006AA10A301)资助 |
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| 摘 要： | 含碳温室气体浓度增加而加剧的温室效应是气候变化的主要原因。在线监测陆地生态系统中的CO_2气体浓度并分析CO_2通量,对了解局地气候及改善环境意义重大。设计了基于可调谐半导体激光吸收光谱技术的开放式CO_2气体监测系统,于2010年4月在中国科学院封丘农业生态实验站进行了小麦田间CO_2浓度的实时在线监测。连续监测结果表明:主要受植被光合作用的影响,田间CO_2浓度具有明显的日变化规律,基本特点是白天浓度降低,夜间浓度升高。系统不需要气体采样、监测范围广、灵敏度高、响应时间快、调校简单,为农田环境的CO_2浓度连续监测提供了有效的光学遥测方法。
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| 关 键 词： | 激光吸收光谱 农田 CO_2浓度 |
Open-Path in-situ CO_2 Monitoring in Cropland Based on Laser Techniques |
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| HE Ying,ZHANG Yu-jun,LIU Jian-guo,SONG Xue-mei,WANG Li-ming,ZHU An-ning.Open-Path in-situ CO_2 Monitoring in Cropland Based on Laser Techniques[J].Journal of Atmospheric and Environmental Optics,2010,5(6). |
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| Authors: | HE Ying ZHANG Yu-jun LIU Jian-guo SONG Xue-mei WANG Li-ming ZHU An-ning |
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| Affiliation: | HE Ying~1,ZHANG Yu-jun~1,LIU Jian-guo~1,SONG Xue-mei~1,WANG Li-ming~1,ZHU An-ning~2 (1 Key Laboratory of Environmental Optics and Technology,Anhui Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Hefei 230031,China,2 State Experimental Station of Agro-Ecosystem in Fengqiu,State Key Laboratory of Soil and Sustainable Agriculture,Institute of Soil Science,Nanjing 210008,China ) |
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| Abstract: | The greenhouse effect exacerbated by the increase of carbon-containing gases is the important cause of the climate change.On-line CO_2 concentration monitoring of terrestrial ecosystem and CO2 flux analyzing are crucial for knowing regional climate and improving environment.The open-path CO_2 monitoring system based on tunable diode laser absorption spectroscopy technology was designed and used for CO_2 concentration fn-situ detection in wheat field at State Experimental Station of Agro-Ecosystem in Fengqiu... |
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| Keywords: | laser absorption spectroscopy cropland CO_2 concentration |
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