Rising plant temperatures reduce carbon capture ability, new study shows

A new study highlights a worrying feedback loop in the climate system: as global temperatures rise, plants themselves are heating up, which reduces their ability to absorb carbon dioxide. Researchers found that higher leaf temperatures stress plant metabolism, slowing photosynthesis and weakening the natural carbon sink that forests and vegetation provide. This effect could undermine nature-based carbon offset projects that rely on tree planting and forest conservation. If warming continues, the expected carbon sequestration from these projects may be lower than modeled, creating risks for carbon credit buyers and climate targets. The findings underscore the need for more accurate carbon accounting that accounts for climate-driven changes in plant physiology. They also add urgency to reducing emissions directly rather than relying solely on natural carbon sinks to offset ongoing pollution.