Q&A · Survival
Do deciduous trees produce more water than evergreens in transpiration bags?
April 5, 2026
Quick Answer
Deciduous trees tend to produce more water vapor in transpiration bags than evergreens due to their larger leaf area and higher rates of transpiration.
Transpiration Rates of Deciduous Trees
Deciduous trees can lose up to 70% of their water intake through transpiration, with a single tree losing thousands of gallons of water per year. In contrast, evergreen trees tend to lose around 30-40% of their water intake through transpiration. This difference in water loss is largely due to the size and density of the deciduous tree’s leaves.
Using Transpiration Bags to Measure Tree Water Loss
Transpiration bags are a tool used to measure the rate of water loss in trees. These bags can be filled with a precise amount of water and then placed around the trunk of a tree, allowing researchers to track how quickly the tree loses water. To use a transpiration bag effectively, it’s essential to secure it tightly around the trunk of the tree, ensuring a tight seal to prevent any water from escaping. A typical transpiration bag will lose around 1-2 liters of water per hour for a deciduous tree, with the exact rate depending on factors such as temperature, humidity, and tree size.
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