The studies on the biogeochemistry of carbon and nitrogen, carbon and nitrogen cycle in forest ecosystems, or photosynthates supply for nitrogen assimilation and metabolism of plant indicated that carbon and nitrogen could influence each other.

• 不论探讨碳与氮之生物地质化学，或森林生态系碳与氮养分循环，甚至整株植物产生光合产物供给氮同化与代谢所需，都显示碳与氮彼此能相互影响。