Three specific effects of vegetation shade, evapotranspiration and the effect of natural ventilation.
We applied spectral mixture analysis to Landsat TM images from 1986 to 2009 at 4 time steps to estimate the fractional cover of vegetation, shade, substrate, and non-photosynthetic vegetation endmembers within each image.
Active termite mounds maintained a higher internal temperature than inactive ones, and mound activity reinforced the positive effect of mound size and moderated the negative effect of vegetation shade on internal temperatures.
To this end, the effect of a vegetation shade canopy on the energy consumption rate and carbon emissions of an 11,000 m2 office building, as well as the canopy's potential effects on worker performance, were evaluated.
We used general additive mixed models (GAMM) to determine how external temperature, mound size (volume) and the amount of vegetation shade affects mound internal temperature over a 24-h period.
Wetlands less than 0.6 m deep, and/or with vegetation that shaded them for most of the day, were excluded from the study database as being either too ephemeral or too shaded to be used by R. aurora (Licht 1969, 1971).
Plans could include establishing or protecting refugia for valued aquatic organisms at risk at higher elevations or latitudes, removing barriers to natural species migrations, protecting multiple populations as a hedging strategy to reduce overall risk, or restoring riparian vegetation to shade river reaches.
Appropriate vegetation used for shading public and private areas is essential to mitigate heat stress and can create better human thermal comfort especially in cities.
Shading is an essential strategy to reduce thermal stress and by using vegetation and shading devices, it is even possible to achieve thermal comfort during the warmest hours in the summer which is the most problematic season in Damascus.
They essentially integrate sky courts, the use of vertical landscaping and vegetation, sun shading, and use of natural ventilation in transitional areas such as the lift and ground floor lobbies.
The results confirm the significant influence of vegetation's shading effect for energy savings: energy consumption in the 1-floor building decreases from 11.1% for the 1-tree configuration up to 44.4% for the 5-trees configuration; in the 2-floors building, the reduction goes from 12.8% up to 48.5%.
