花的可塑性与植物混合交配系统具有直接的关联，但关于全球变化背景下花性状可塑性变化对植物交配格局的影响，并由此导致的生态学后果目前还停留在理论预测阶段。我们以蓝白龙胆为模式材料，试图回答：1）花的可塑性是怎样影响蓝白龙胆混合交配格局的？2）模拟增温、降水和氮沉降是怎样影响花性状可塑性的？3）全球变化下植物混合交配格局是否发生了变化？如果存在变化，可能引发的生态学后果有哪些？本项目拟试图回答上述问题，以揭示花性状可塑性对植物混合交配系统的维持机制及其对全球气候变化的响应，为探究青藏高原物种适应策略和进化机制提供数据。同时，研究全球变化背景下蓝白龙胆与传粉者之间协同进化关系的变化，有助于从实践上说明传粉者介导的植物混合交配系统时空格局变化及其引起的生态学后果。

Flower plasticity are directly corrected with the plant mixed mating system. However, few studies focus on the relationship between the changing of flower plasticity and selfing or outcrossing rate to the global changing in the field experiment. In this program, we use the modern plant (Gentiana leucomelaena) and ask the questions that 1) How can mixed mating system respond to flower plasticity in Gentiana leucomelaena? 2) How does the global changing (temperature, precipitation and nutrients) impact on the flower plasticity? and 3) whether the plant mixed mating system is changed with the global changing? What are the ecological consequences in these changing? We believe that the answers to these questions will be helpful to understand how the plant mixed mating system responds to global change and its ecological consequence in future.Meanwhile, we will investigate the coevlution relationship between Gentiana leucomelaena and pollinators. The result will contribute to clarify spatial and temporal patterns in plant mixed mating sysytem changing and its eclogical consequences based on the pollinators.