Forests play an important role in stemming global warming by absorbing carbon dioxide -- the most abundant Greenhouse gas -- from the atmosphere . But a study says that trees have slowed their response to a warming climate. The trees were slowing down the process of sprouting leaves. The slowdown suggests a current and possible future weakening of forests' carbon uptake due to the declining temperature sensitivity of trees.The researchers found that the trees' response (to earlier spring) had declined over the past three decades, and strong winter warming may further reduce it.The authors believe the trees may be trying to protect themselves against cold weather.
Source. Down to Earth (magazine) 16-31 October 2015