Green Building(2)

Let’s talk about the vegetation itself. Boundary layer, for plants, serves to control evapotranspiration, which is about the losing of gas and water through the leaves.  In calm and mild conditions, the boundary layer is comfortably thick. However, in a hot and windy climate plants would modify their figures to adapt the harsh circumstance, including tiny hairs on their leaves that expand each leaf’s surface area and thus its boundary layer. So in these situation plants are not as graceful and tall as we draw in architecture design.

On the terrace and top of a skyscraper, extreme wind, heat and cold should be mixed to consider. Wind would be the most formidable force tress face at the elevation. Even if not blow down, their trunks are perhaps bowed away alone the prevailing winds. So they would spread in confusion not the decoration you wish to be. On the other hand, cold wind would take away the water in the leaf, and also prevent for the photosynthesis, which will harm the trees. The hot weather would also do the same effort as cold, but the surface of the leaf temperatures would be higher than the air because it receives the radiation directly. So at some certain weather, add 10 to 14 degrees C in to the plants.

As conclusion, trees would not perform well on building than they are in nature even we spend a lot on them. So if we want to gin up plants to make a building look sustainable, how about think of far better ways?