Thinning pine plantations increases water flow and reduces interception loss.
The study looked at how rain is divided in a eucalypt forest and pine plantation in Australia. They found that most of the rain that lands on trees evaporates before reaching the ground. In the eucalypt forest, only a small amount of rain is stored in the trees. In the pine plantation, more rain is stored in the trees. Overall, the eucalypt forest keeps about 11% of the rain, while the pine plantation keeps about 18%. When the pine trees were thinned out, more rain reached the ground, less was stored in the trees, and more flowed down the tree trunks. This shows that thinning trees can change how rain is distributed in a forest.