二氧化碳的摩尔分数升高对银杏叶气孔参数的影响

通过自行设计的二氧化碳的摩尔分数梯度，控制植物生长的环境因素，实现二氧化碳的作用和环境因素协同作用的分离，既可模拟温度连续变化对植物的影响，又可分析二氧化碳与环境因素连续变化下的协同作用，还可通过比较分析二氧化碳摩尔分数对植物的独立影响．结果表明，气孔密度（Ds）、气孔指数（Is）与二氧化碳以及环境因素的关系，不仅可以为古生物手段指示地质历史时期二氧化碳摩尔分数变化提供重要的参考，还可以推算出在一定二氧化碳摩尔分数下植物所作出不同反应的情景．正确认识植物气孔参数、温室效应及其与大气二氧化碳摩尔分数的相关性，有助于正确预测全球气候变化的趋势，促使采取相应的措施，促进生态环境可持续发展．

Influence of increased carbon dioxide concentration on gingkgo's pore parameters

The article, by designing carbon dioxide concentration grads, aims to control the environmental factors in plant growth and separate the effect of carbon dioxide from that of all the environmental factors, thereby mimicking the influence of individual temperature factor＇s changes on the plant, analyzing the cooperative effects of carbon dioxide and the environmental changing factors as well as analyzing the independent effect of carbon dioxide＇s concentration on the plant by comparison. The relation of Ds,ls,carbon dioxide and the environmental factors not only provides valuable information as ancient biological means to indicate carbon dioxide contents in different geological periods, but also helps work out how the plant reacts at a certain concentration of carbon dioxide. Only with proper understanding of plant pore parameters, greenhouse effect and its relation to atmospheric carbon dioxide＇s concentration, the trend of global climate changes can be properly predicted,and making proper measure for sustainable development.