Caracterização térmica do sombreamento arbóreo de espécies nativas do cerrado.

Abstract

This research was developed with the goal of characterizing the shade thermal ambient from four native tree species from Cerrado region. The experiment was conduced from June until September/04 in the pasture area at UEMS/Aquidauana farm. They were evaluated the species Sclerolobium aureum (Fede-fede), Pseudobombax tomentosum (Paineira), Terminalia argentea (Capitão) and Qualea parviflora (Pau-terra). Data were collected each 15 days, at 9:30 AM, 12:30 AM and 3:30 PM. They were calculated the comfort indexes: Radiant Thermal Load (RTL), Temperature Humidity Index (THI) and Black-Globe Humidity Index (BGHI). High temperatures in the region resulted in high comfort index and show the importance of tree shade, even in the winter. Although it was no difference among the thermal ambient of evaluated species, it is necessary the presence of trees, because of the high comfort indexes, especially RTL, observed in the sun.