摘要
综述了全球范围内CO2浓度增高对作物影响的主要研究方法,讨论了开放式CO2富集系统(Free-airCO2Enrichment,FACE)的原理结构特点、先进性和不足。文章认为,FACE系统是当前研究CO2肥效作用最接近自然状况的模拟系统,对研究作物生理生态、品质与环境关系等问题具有重要的适用性和先进性。但该系统也存在着CO2浓度与自然变幅不吻合、与温度等环境因子不匹配等人为调控的局限性。作者结合近年来对FACE系统和半开放式梯度实验系统(CO2-Temperature Gradient Chambers,CTGC)的使用和调试,对2个系统做了比较。建议FACE系统与CTGC系统配合使用,更利于解决模拟环境真实性,提高实验精度;在FACE系统中,建议把CO2的目标浓度改为幅度值以解决与自然变幅相符合的问题。在研究对象方面,建议开展作物世代研究和环境综合研究,以求精确阐明CO2浓度增高对作物影响机理与影响程度,为准确判断气候变化背景下粮食生产和粮食安全提供科学依据。
Main study methods of the impacts of elevated CO2 on crops in the global were reviewed, The mechanism and structure of Freeair CO2 enrichment （FACE） system was illuminated, The advantages and disadvantages of FACE system were discussed, In general, FACE is most approaching to natural environment and it is most effective for studying the relationship between ecophysiological characters of crops and environment, But FACE also has some disadvantages, such as CO2 concentration increasing suddenly and not fit natural variation, not match to temperature change, According to a series of researches in recent years, the authors put forward to some suggestions for improving FACE, namely, applying to CTGC with FACE together, adjusting target CO2 concentration as a range, developing crop generation research and integrated environment factor research,
出处
《中国农业大学学报》
CAS
CSCD
北大核心
2008年第3期23-28,共6页
Journal of China Agricultural University
基金
中国博士后科学基金(20060390547)
中澳国际合作项目(00xx-0506-Norton)
国家科技支撑计划“十一五”重大项目(2007BAC03A06)
