2222 허효빈

[효빈]

Cities are becoming warmer as buildings and roads absorb and retain heat. At the same time, artificial lights remain on throughout the night, creating a unique environment for urban plants. It is the combination of heat and artificial light that can affect plant growth. Researchers have found that plants respond differently depending on the intensity and duration of light. It was careful experiments that revealed how artificial light changes the growth patterns of plants. If cities had reduced unnecessary nighttime lighting, some plants might have experienced less disruption to their natural cycles.

In hydroponic systems, plants can be grown without soil while their light and nutrients are carefully controlled. Before these systems were widely studied, the relationship between light and plant growth had been poorly understood. By the time researchers compared different light conditions, several important factors had already been identified. It is the balance between light, nutrients, and temperature that determines how efficiently plants grow. If the light had been controlled more precisely, researchers could have achieved more efficient plant production.