noun
carbon sink; carbon dioxide sink; CO2 sink
Environmental science term for a natural or artificial reservoir that absorbs more carbon dioxide than it releases.
See also: 二酸化炭素の吸収源 (にさんかたんそのきゅうしゅうげん)
森林は重要な二酸化炭素吸収源です。
Forests are important carbon sinks.
海洋も二酸化炭素吸収源として働いている。
The oceans also act as carbon dioxide sinks.
Same meaning but phrased with の; the compound form is more compact and technical.
Compound of 二酸化炭素 (carbon dioxide) + 吸収源 (absorption source/sink).