for the saving bricks, yes, since it's more robust than a straight line single-brick wall, and cheaper than a multi-brick one. I imagine for heating, it's that

for the saving bricks, yes, since it's more robust than a straight line single-brick wall, and cheaper than a multi-brick one. I imagine for heating, it's that the trees get exposed to more irradiation by sitting in the focus of the curve rather than in front of a line.