YRF Overcrowded trees are under competitive stress from their neighbors. Thinning may be done to increase the resistance of the stand to environmental stress such as drought, insect infestation or extreme temperature.
Rising global temperatures are expected to cause greater evaporation of water vapor into the atmosphere, primarily from the oceans. On one hand, we know that water vapor is a powerful greenhouse gas, so an increase in water vapor might be expected to produce yet more warming through an enhanced greenhouse effect.lobal warming accelerates evaporation, placing more water vapor in the air. More water vapor generates a a stronger greenhouse effect, since water vapor is a greenhouse gas. However, it may also lead to the formation of more clouds, which might help cool the planet by increasing Earth's albedo.
That's what happens when water turns into a gas: Some molecules escape from liquid water and float into the air as vapor. Compared to all the water on Earth, the amount of water vapor is tiny. But it's crucial to our atmosphere, the source of all rain and snow. And water vapor helps trap some of the Sun's heat so it doesn't all bounce back into space.