The Method of Measuring Carbon Sinks Based on the Changes of oxygen concentration in Forest Canopy

Measuring Forest Carbon Sinks is becoming a popular topic as the need of many countries’ carbon neutrality plans. We demonstrate a simple and accurate method of Forest Carbon Sinks measurement. By observing the daily average oxygen concentration in the canopy, we found it presented a parabolic distribution from Spring to Fall in a year. The forest finished the cycle from releasing oxygen and sequestrating carbon dioxide to using oxygen and releasing carbon dioxide in this period. We calculated the carbon sequestration of the forest was 101.39t/hm 2 /y, the Carbon Sink was 15.09t/hm 2 /y by calculating the changes of oxygen concentration in a growth cycle, the Carbon Sink is 16.29% of the carbon sequestration.