低浓度CO₂对植物的影响研究进展

Research Progress of the Effects of Low CO₂ on Plant

摘要: CO₂是植物光合作用的主要碳源。低浓度CO₂能够降低植物的碳固定速率，影响植物的生长发育过程。由于C3与C4植物光合途径存在差异，所以对外界低CO₂环境的应答反应不同。此外，生长环境中的其他因子如水分、温度、氮等也与低浓度CO₂相互作用影响植物生长发育进程。本文从生物量及其分配、生长发育周期、气孔及光合系统，以及低CO₂与其他环境因子相互作用等方面综述了低浓度CO2对植物的影响。

Abstract: Atmospheric CO₂ is the main carbon source for plant photosynthesis and the fundamental sub-strate for plant growth. The carbon fixation efficiency of plant is reduced and the growth and de-velopment are affected at low CO₂. The effect of low CO₂ on C3 and C4 plant is different because of their distinct photosynthetic pathway. Furthermore plant growth can be affected by the interactive effects of low CO₂ with other environmental factors, such as water, temperature, and nutrients. In this review, the effects of low CO₂ on plant growth and development are discussed in several aspects including biomass and its distribution, growth cycle, stoma, photosynthetic system and other environmental factors.