CAJ | 학술논문

为了更好地理解大气CO2浓度与气候之间的耦合关系,维护自然与人类社会的可持续发展,精确重建古大气CO2浓度的变化尤为重要.在众多研究古大气CO2浓度的方法中,化石植物叶片气孔方法已被证明是一种比较精确和理想的方法.文章介绍了气孔方法恢复古大气CO2浓度的概念、方法以及最新应用,用气孔比率法恢复了中国西北地区早、中侏罗世的大气CO2浓度变化.其趋势为:从早侏罗世普林斯巴赫期-中侏罗世阿林期-巴柔期,大气CO2浓度先是下降,而后持续上升,整个时期的大气CO2浓度在1000-1500 ppmv之间,这种趋势与Berner的碳平衡模型基本一致,并指出恢复的古大气CO2浓度低于碳平衡模型值可能是由于海拔引起的.最后提出了几个方面的研究前景.
위료경호지리해대기CO2농도여기후지간적우합관계,유호자연여인류사회적가지속발전,정학중건고대기CO2농도적변화우위중요.재음다연구고대기CO2농도적방법중,화석식물협편기공방법이피증명시일충비교정학화이상적방법.문장개소료기공방법회복고대기CO2농도적개념、방법이급최신응용,용기공비솔법회복료중국서북지구조、중주라세적대기CO2농도변화.기추세위:종조주라세보림사파혁기-중주라세아림기-파유기,대기CO2농도선시하강,이후지속상승,정개시기적대기CO2농도재1000-1500 ppmv지간,저충추세여Berner적탄평형모형기본일치,병지출회복적고대기CO2농도저우탄평형모형치가능시유우해발인기적.최후제출료궤개방면적연구전경.
It is very important to accurately reconstruct palaeo-CO2 for understanding clearly a linkage between atmospheric CO2 and the Earth's climate and for appropriate prediction of future global changes. Ice cores provide a direct evidence of palaeo-CO2, but fail of tracing palaeo-CO2 signals 50 million years ago. Although there are a lot of palaeo-CO2 proxies in paleontology and geochemistry, stomatal approach has been proved to be a more reliable and accurate way.