How do branch patterns affect local soil moisture?

How do branch patterns affect local soil moisture?

Recently been winter hiking through the Central Cascades of Washington State and have noticing how many of the deciduous trees have more of a “Y” with the smaller arms running up and away from the base while conifers have either a flat or downward “Y”. Has any research been done on the relationship between moisture requirements of tree species and branch patterns? Has anyone looked at different populations of the same species in areas that receive different amounts of annual precipitation?

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